KR101054902B1 - Planar transformer - Google Patents

Abstract

PURPOSE: A planar transformer is provided to secure enough leakage inductance inside the planar transformer without a leakage inductor outside or cores with small permeability. CONSTITUTION: A plurality of coils is laminated in a first upper part secondary winding. The first upper part secondary winding is arranged by surrounding a first left direction protrusion of a first left side planar core on a primary winding. A plurality of coils is laminated in a second upper part secondary winding. The second upper part secondary winding is arranged separately in the first upper part secondary winding and surrounds a first right direction protrusion of a first right side planar core on the primary winding. An eleventh main body(1111) is formed by a magnetic material of a tetragonal shape. An eleventh rear side protrusion(1112) is formed with extension in a rear side edge of the eleventh main body. An eleventh front side protrusion is formed with extension in a front side edge of the eleventh main body.

Description

Planar Transformer

Embodiments relate to planar transformers.

Recently, a power supply employing a Switching Mode Power Supply (SMPS) has attracted attention, and such a Switching Mode Power Supply is a metal oxide semiconductor field effect transistor (MOS FET) or a bipolar junction transistor (MOS FET). Switching devices such as BJTs (bipolar junction transistors) and transformers are used to provide stable power.

On the other hand, as household appliances and the like have been developed in a trend of light and short, the switching mode power supply is also required to be slipped, and to reduce the volume of a transformer that occupies a large volume among the circuit components constituting the switching mode power supply. The transformer is in the spotlight.

However, the conventional planar transformer applied to the LLC resonant converter has a small leakage inductance, so that a leakage inductor is separately installed or a core having a low permeability is used separately, so that the volume of the planar transformer becomes large or the manufacturing of the planar transformer becomes complicated. There is this.

The planar transformer according to the embodiment can sufficiently secure the leakage inductance inside the planar transformer even if a low permeability core is not used separately or a leak inductor is not used.

The planar transformer according to the first embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step formed on the rear side of the eleventh body, and an eleventh body formed on the front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth body formed of a rectangular magnetic body, a thirteenth rear stepped to extend to a rear side of the thirteenth body, a thirteenth front stepped to extend to a front side of the thirteenth body, and A first central planar core comprising a first central step formed at a predetermined length at a center of a thirteen rear step and a thirteenth front step, wherein a plurality of coils are stacked, and an eleventh rear step and a first rear step of the first left planar core. 11 A first lower secondary winding, a plurality of coils are stacked between the front stepped and surrounding the first left step of the first left planar core, and a plurality of coils are stacked, the first lower secondary winding is spaced apart from the first lower secondary winding, and the first right A second lower secondary winding, coil wound around the first lower step of the first right planar core, wound between the twelfth rear step of the planar core and the twelfth front step. And a first left step of the first left planar core, a first center step of the first center plane core and a first of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed around the right step, and a plurality of coils are stacked, and a first upper secondary winding disposed around the first left step of the first left planar core, and a plurality of coils are stacked on the primary winding. Stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core, formed of a rectangular magnetic material And disposed on the first upper secondary winding to face the eleventh rear step, the eleventh front step, and the first left step of the first left planar core. A second left planar core, a rectangular magnetic body, spaced apart from the second left planar core on the second upper secondary winding, a twelfth rear step of the first right planar core, a twelfth front step and And a second right planar core and a rectangular magnetic body disposed to face the first right step, and are spaced apart between the second left planar core and the second right planar core on the primary winding, And a second central planar core disposed opposite the thirteenth rear step, the thirteenth front step, and the first central step of the first central planar core.

The planar transformer according to the second embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step extending from a rear side of the eleventh body, and an eleventh body extending from a front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth body formed of a rectangular magnetic body, a thirteenth rear stepped to extend to a rear side of the thirteenth body, a thirteenth front stepped to extend to a front side of the thirteenth body, and A first central planar core comprising a first central step formed at a predetermined length at a center of a thirteen rear step and a thirteenth front step, wherein a plurality of coils are stacked, and an eleventh rear step and a first rear step of the first left planar core. 11 A first lower secondary winding, a plurality of coils are stacked between the front stepped and surrounding the first left step of the first left planar core, and a plurality of coils are stacked, the first lower secondary winding is spaced apart from the first lower secondary winding, and the first right A second lower secondary winding, coil wound around the first lower step of the first right planar core, wound between the twelfth rear step of the planar core and the twelfth front step. And a first left step of the first left planar core, a first center step of the first center plane core and a first of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed around the right step, and a plurality of coils are stacked, and a first upper secondary winding disposed around the first left step of the first left planar core, and a plurality of coils are stacked on the primary winding. A second upper secondary winding stacked on the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core, and on the first upper secondary winding. And a twenty-first body formed of a rectangular magnetic body, and extending to a rear side of the twenty-first body, the eleventh of the first left planar core. A twenty-first rear step that is disposed to face the rear step, an twenty-first front step that extends to the front side of the twenty-first body, and is disposed to face the eleventh front step of the first left flat core; A second left planar core, the second upper part, formed of a predetermined length at the center of the rear step and the twenty-first front step and including a second left step which is disposed opposite the first left step of the first left planar core; A twenty-second main body disposed on the secondary winding and spaced apart from the second left planar core, the twenty-second main body formed of a rectangular magnetic body, and extending to a rear side of the twenty-second main body, and a twelfth rear step of the first right planar core; A twenty-second rear step which is disposed opposite to the twenty-second rear step; and is formed to extend on the front side of the twenty-second main body and disposed to face the twelfth front step of the first right planar core; A second front step, and a second right step formed in the center of the 22nd rear step and the 22nd front step and having a predetermined length opposite to the first right step of the first right planar core. A twenty-third body spaced between the right-plane core and the second left-plane core and the second right-plane core on the primary winding and extending to a rear side of the twenty-third body formed of a rectangular magnetic body; And a twenty-third rear step which is formed to face the thirteenth rear step of the first central plane core, and is formed to extend on the front side of the twenty-third main body and to face the thirteenth front step of the first central plane core. A predetermined length is formed at a center of the twenty-third front stepped portion, the twenty-third rear stepdock and the twenty-third front stepped, and the first central step of the first central plane core; And a second central planar core comprising a second central step disposed opposite.

The planar transformer according to the third embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step formed on the rear side of the eleventh body, and an eleventh body formed on the front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth main body formed of a rectangular magnetic body, and extending from a rear side of the thirteenth main body to a first left step of the first left flat core and a first right step of the first right flat core. A thirteenth rear step which is disposed in the thirteenth, and a thirteenth step which is formed extending from the front side of the thirteenth body and disposed between the eleventh front step of the first left planar core and the twelfth front step of the first right planar core An eleventh center plane core including a front step, a plurality of coils are stacked, and surround the first left step of the first left planar core between the eleventh rear step of the first left planar core and the eleventh front step. A first lower secondary winding disposed and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and a twelfth rear step of the first right planar core and a twelfth front end A second lower secondary winding disposed between the first right side step of the first right planar core, and a coil is wound around the second lower secondary winding, and the second lower secondary winding is formed on the first lower secondary winding and the second lower secondary winding. A primary winding disposed around a first left step of the first left planar core and a first right step of the first right planar core, and disposed between the thirteenth rear step of the eleventh center plane core and the thirteenth front step A first upper secondary winding disposed on the primary winding and surrounding the first left step of the first left planar core; a plurality of coils stacked on the primary winding, and the first upper secondary winding A second upper secondary winding, square type, spaced apart and disposed on the primary winding and surrounding the first right step of the first right planar core A twenty-first left planar core, a quadrangular magnetic body formed on the first upper secondary winding and disposed to face the eleventh rear step, the eleventh front step, and the first left step of the first left planar core; And a second spaced apart from the second left planar core on the second upper secondary winding, and disposed to face the twelfth rear step, the first front step, and the first right step of the first right planar core. A second right planar core and a rectangular magnetic body, and are spaced apart between the second left planar core and the second right planar core on the primary winding, the thirteenth rear step of the eleventh central planar core, and And a twenty-first center plane core disposed opposite the thirteenth front step.

The planar transformer according to the fourth embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step extending from a rear side of the eleventh body, and an eleventh body extending from a front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth main body formed of a rectangular magnetic body, and extending from a rear side of the thirteenth main body to a first left step of the first left flat core and a first right step of the first right flat core. A thirteenth rear step which is disposed in the thirteenth, and a thirteenth step which is formed extending from the front side of the thirteenth body and disposed between the eleventh front step of the first left planar core and the twelfth front step of the first right planar core A fourteenth body spaced apart from the eleventh center plane core and disposed between the eleventh center plane core including the front step, the first left plane core and the first right plane core, and formed of a rectangular magnetic body; A fourteenth rear side extending from a rear side of the fourteenth main body and disposed between an eleventh rear step of the first left flat core and a twelfth rear step of the first right flat core; And a fourteenth step which extends on the front side of the thirteenth body and is disposed between the first left step of the first left planar core and the first right step of the first right planar core. 12 center planar core, a plurality of coils stacked, a first lower secondary disposed between the eleventh rear step and the eleventh front step of the first left planar core and surrounding the first left step of the first left planar core; A winding, a plurality of coils are stacked, and are spaced apart from the first lower secondary winding, the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding arranged around the coil, the coil being formed by winding a plurality of first secondary secondary windings on the first lower secondary winding and the second lower secondary winding Disposed around the first left step of the ah and the first right step of the first right-plane core, disposed between the thirteenth rear step and the thirteenth front step of the eleventh center plane core, and the twelfth center plane. A primary winding disposed between the fourteenth rear step of the core and the fourteenth front step, wherein a plurality of coils are stacked, and the first winding disposed around the first left step of the first left planar core on the primary winding An upper secondary winding, a plurality of coils are stacked, the second upper secondary winding disposed to be spaced apart from the first upper secondary winding, surrounding the first right step of the first right planar core on the primary winding And a magnetic material having a rectangular shape and having an eleventh rear step, an eleventh front step and a first left step of the first left planar core on the first upper secondary winding. A second left planar core disposed to face each other and formed of a magnetic material having a quadrangular shape, spaced apart from the second left planar core on the second upper secondary winding, and a twelfth rear step of the first right planar core; A second right planar core disposed to face the twelfth front step and the first right step, formed of a rectangular magnetic body, and spaced apart between the second left planar core and the second right planar core on the primary winding. And a twenty-first center plane core and a quadrangular magnetic body disposed opposite to the thirteenth rear step and the thirteenth front step of the first center plane core, and the second left plane core and the second left planar core on the primary winding. Between the two right planar cores, spaced apart from the twenty-first center plane cores, a fourteenth rear step of the twelfth central plane core and a fourteenth And a twenty-second central planar core disposed opposite the front step.

The planar transformer according to the fifth embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step extending from a rear side of the eleventh body, and an eleventh body extending from a front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth main body formed of a rectangular magnetic body, and extending from a rear side of the thirteenth main body to a first left step of the first left flat core and a first right step of the first right flat core. A thirteenth rear step which is disposed in the thirteenth, and a thirteenth step which is formed extending from the front side of the thirteenth body and disposed between the eleventh front step of the first left planar core and the twelfth front step of the first right planar core An eleventh center plane core including a front step, a plurality of coils are stacked, and surround the first left step of the first left planar core between the eleventh rear step of the first left planar core and the eleventh front step. A first lower secondary winding disposed and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and a twelfth rear step of the first right planar core and a twelfth front end A second lower secondary winding disposed between the first right side step of the first right planar core, and a coil is wound around the second lower secondary winding, and the second lower secondary winding is formed on the first lower secondary winding and the second lower secondary winding. A primary winding disposed around a first left step of the first left planar core and a first right step of the first right planar core, and disposed between the thirteenth rear step of the eleventh center plane core and the thirteenth front step A first upper secondary winding disposed on the primary winding and surrounding the first left step of the first left planar core; a plurality of coils stacked on the primary winding, and the first upper secondary winding A second upper secondary winding, spaced apart and disposed on the primary winding and surrounding a first right step of the first right planar core, the first A twenty-first body disposed on the secondary secondary winding, the twenty-first body formed of a rectangular magnetic body, and a twenty-first rear formed to extend on the rear side of the twenty-first body and to face the eleventh rear step of the first left planar core; A stepped jaw, a twenty-first front stepped to extend toward the front side of the twenty-first body, and disposed to face the eleventh front step of the first left planar core; A second left planar core, the second left planar core, the second left planar core formed on the second upper secondary winding, the second left planar core formed to have a predetermined length and disposed to face the first left step of the first left planar core; A twenty-second main body spaced apart from each other, formed of a rectangular magnetic body, and extending from a rear side of the twenty-second main body to a twelfth rear of the first right planar core; A twenty-second rear step that is disposed opposite the jaw, a twenty-second front step that is formed extending to the front side of the twenty-second main body and disposed to face the twelfth front step of the first right planar core, and the twenty-second rear On the second right plane core and the primary winding formed on the center of the step and the twenty-second front step and including a second right step disposed opposite to the first right step of the first right planar core. A twenty-third body disposed between the second left-plane core and the second right-plane core, the twenty-third body formed of a quadrangular magnetic body, and extending from a rear side of the twenty-third body, A twenty-third rear step that is disposed opposite the thirteenth rear step, and extends on the front side of the twenty-third main body, and on the thirteenth front step of the eleventh central plane core And a twenty-first central planar core comprising opposing twenty-third front steps.

The planar transformer according to the sixth embodiment includes an eleventh body formed of a rectangular magnetic body, an eleventh rear step extending from a rear side of the eleventh body, and an eleventh body extending from a front side of the eleventh body. A first left planar core comprising a front step, a first left step formed at a predetermined length at the center of the eleventh rear step and the eleventh front step, and spaced apart from the first left planar core and having a rectangular shape A twelfth main body formed of a magnetic material of the twelfth body, a twelfth rear step ledge extending to the rear side of the twelfth body, a twelfth front step ledge extending to the front side of the twelfth body, the twelfth rear step and the A first right planar core, a first right planar core having a first right step formed in a center of a twelfth front step, and spaced between the first left planar core and the first right planar core And a thirteenth main body formed of a rectangular magnetic body, and extending from a rear side of the thirteenth main body to a first left step of the first left flat core and a first right step of the first right flat core. A thirteenth rear step which is disposed in the thirteenth, and a thirteenth step which is formed extending from the front side of the thirteenth body and disposed between the eleventh front step of the first left planar core and the twelfth front step of the first right planar core A fourteenth body spaced apart from the eleventh center plane core and disposed between the eleventh center plane core including the front step, the first left plane core and the first right plane core, and formed of a rectangular magnetic body; A fourteenth rear side extending from a rear side of the fourteenth main body and disposed between an eleventh rear step of the first left flat core and a twelfth rear step of the first right flat core; And a fourteenth step which extends on the front side of the fourteenth body and is disposed between the first left step of the first left planar core and the first right step of the first right planar core. 12 center planar core, a plurality of coils stacked, a first lower secondary disposed between the eleventh rear step and the eleventh front step of the first left planar core and surrounding the first left step of the first left planar core; A winding, a plurality of coils are stacked, and are spaced apart from the first lower secondary winding, the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding arranged around the coil, the coil being formed by winding a plurality of first secondary secondary windings on the first lower secondary winding and the second lower secondary winding Disposed around the first left step of the ah and the first right step of the first right-plane core, disposed between the thirteenth rear step and the thirteenth front step of the eleventh center plane core, and the twelfth center plane. A primary winding disposed between the fourteenth rear step of the core and the fourteenth front step, wherein a plurality of coils are stacked, and the first winding disposed around the first left step of the first left planar core on the primary winding An upper secondary winding, a plurality of coils are stacked, the second upper secondary winding disposed to be spaced apart from the first upper secondary winding, surrounding the first right step of the first right planar core on the primary winding And a twenty-first body disposed on the first upper secondary winding, formed of a quadrangular magnetic body, and extending from a rear side of the twenty-first body. A twenty-first rear step which is disposed to face the eleventh rear step of the side planar core; A second left plane comprising a step and a second left step formed in a center of the twenty-first rear step and the twenty-first front step and disposed opposite the first left step of the first left planar core; A core, disposed on the second upper secondary winding, spaced apart from the second left planar core, formed of a twenty-second main body formed of a rectangular magnetic body, and extending from a rear side of the twenty-second main body and the first right flat surface; A twenty-second rear step that is disposed to face the twelfth rear step of the core, and is formed to extend on the front side of the twenty-second main body and to the twelfth front step of the first right planar core; A second right stepped portion which is formed to have a predetermined length at a center of the twenty-second front stepped and the twenty-second rear stepped and the twenty-second front stepped and is disposed opposite to the first right step of the first right planar core; A twenty-third body disposed between the second right-plane core, the second left-plane core on the primary winding, and the second right-plane core, the twenty-third body formed of a rectangular magnetic body, and the rear of the twenty-third body; A twenty-third rear stepped portion extending from the side and disposed to face the thirteenth rear stepped portion of the eleventh center plane core; A twenty-first center plane core comprising a twenty-third front step and disposed opposite to the step and the second left planar core and the second right on the primary winding; A twenty-fourth body spaced apart from the twenty-first central plane core and formed in a quadrangular magnetic body between the planar cores and an extension of the rear side of the twenty-fourth main body, and a fourteenth rear of the twelfth central plane core; A twenty-second center comprising a twenty-fourth rear step that is disposed opposite the step, and a twenty-fourth front step that extends on the front side of the twenty-fourth main body and is disposed opposite the fourteenth front step of the twelfth central plane core; And planar cores.

The planar transformer according to the seventh exemplary embodiment includes a first body formed of a rectangular magnetic body, a first left rear step extending from the rear left side of the first body, and a front left side of the first body. A first left front step formed, a first left step formed with a predetermined length at the center of the first left rear step and the first left front step, and the first left rear step formed and spaced apart from the first main step A first mid posterior step formed at a rear central side of the first step, a first mid front step formed at a distance from the first left front step, and extended to a front central side of the first body, and the first mid rear A first central step formed in a predetermined length spaced apart from the first left step in the center of the step and the first middle front step, and spaced apart from the first middle rear step and formed at a rear right side of the first body; A first right rear step formed to be extended; a first right front step formed to be spaced apart from the first middle front step and extended to a front right side of the first body; and the first right rear step and the first The first planar core including a first right stepped to a predetermined length spaced apart from the first central stepped in the center of the right front step, a plurality of coils are stacked, the first left rear step of the first planar core and A first lower secondary winding, a plurality of coils are stacked between the first left front step and surrounding the first left step of the first planar core, and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and the first A second lower secondary winding, a coil is formed between the first right rear step of the planar core and the first right front step and surrounds the first right step of the first planar core; A fryer disposed on the lower secondary winding and the second lower secondary winding surrounding the first left step of the first planar core, the first central step of the first planar core and the first right step of the first planar core. A head winding, a plurality of coils are stacked, a first upper secondary winding disposed surrounding the first left step of the first planar core on the primary winding, a plurality of coils are stacked, and the first upper secondary winding A second upper secondary winding disposed on the primary winding and surrounding the first right step of the first planar core on the primary winding, the second upper secondary winding formed of a rectangular magnetic material, and the upper secondary winding on the first upper secondary winding A second left planar core, a rectangular magnetic body, which is disposed to face the first left rear step, the first left front step and the first left step of the first planar core. And are spaced apart from the second left planar core on the second upper secondary winding, and disposed to face the first right rear step, the first right front step, and the first right step of the first planar core. A second right planar core and a rectangular magnetic body, and are spaced apart between the second left planar core and the second right planar core on the primary winding, and the first middle rear step of the first planar core And a second central planar core disposed opposite the first intermediate front step and the first central step.

The planar transformer according to the eighth embodiment includes a first body formed of a rectangular magnetic body, a first left rear step extending from a rear left side of the first body, and a front left side of the first body. A first left front step formed, a first left step formed with a predetermined length at the center of the first left rear step and the first left front step, and the first left rear step formed and spaced apart from the first main step A first mid posterior step formed at a rear central side of the first step, a first mid front step formed at a distance from the first left front step, and extended to a front central side of the first body, and the first mid rear A first central step formed in a predetermined length spaced apart from the first left step in the center of the step and the first middle front step, and spaced apart from the first middle rear step and formed at a rear right side of the first body; A first right rear step formed to be extended; a first right front step formed to be spaced apart from the first middle front step and extended to a front right side of the first body; and the first right rear step and the first A first planar core including a first right step formed in a predetermined length spaced apart from the first central step in the center of the right front step, and a plurality of coils stacked therein; a first left rear step of the first planar core A first lower secondary winding, a plurality of coils are stacked between the first left front step and surrounding the first left step of the first planar core, and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and the first A second lower secondary winding and a coil wound between the first right rear step of the planar core and the first right front step and surrounding the first right step of the first core; A first left step of the first planar core, a first central step of the first planar core and a first right step of the first planar core disposed on the first lower secondary winding and the second lower secondary winding. A primary winding, a plurality of coils are stacked, a first upper secondary winding arranged around the first left step of the first planar core on the primary winding, a plurality of coils are stacked, the first upper secondary A second upper secondary winding disposed on the primary winding and surrounding the first right step of the first planar core on the primary winding, the second upper secondary winding disposed on the first upper secondary winding, and having a rectangular magnetic body A twenty-first body formed and a twenty-first rear end extending to a rear side of the twenty-first body and disposed to face the first left rear step of the first planar core; A tuck, a twenty-first front mandrel extending from the front side of the twenty-first body and disposed to face the first left front mandrel of the first planar core; and a center of the twenty-first rear mandrel and the twenty-first front mandrel. A second left planar core, the second left planar core having a predetermined length, the second left planar core disposed opposite the first left step of the first planar core, the second left planar core on the second upper secondary winding; A twenty-second main body spaced apart from each other, a twenty-second main body formed of a rectangular magnetic body, a twenty-second rear stepped extending from a rear side of the twenty-second main body, and disposed to face the first right rear step of the first planar core; A twenty-second front mandrel extending from a front side of the twenty-second main body and disposed to face the first right front mandrel of the first planar core; and the twenty-second rear mandrel and the twenty-second front mandrel. A second right planar core and a second left planar core on the primary winding and the second left planar core including a second right step formed at a predetermined length in the center and disposed to face the first right step of the first planar core; 2 are spaced apart between the right planar core, the twenty-third body formed of a rectangular magnetic body, and is formed to extend to the rear side of the twenty-third body and to face the first middle rear step of the first planar core A twenty-third rear step, an extension of a front side of the twenty-third body, and a twenty-third front step that is disposed to face the first mid-front step of the first planar core; A second central planar core is formed in the center of the step and has a second central step which is disposed opposite to the first central step of the first planar core.

The planar transformer according to the ninth embodiment includes a first body formed of a rectangular magnetic body, a first left rear step extending from the rear left side of the first body, and a front left side of the first body. A first left front step formed, a first left step formed with a predetermined length at the center of the first left rear step and the first left front step, and the first left rear step formed and spaced apart from the first main step A first mid posterior step formed at a rear central side of the first step, a first mid front step formed at a distance from the first left front step, and extended to a front central side of the first body, and the first mid rear A first central step formed in a predetermined length spaced apart from the first left step in the center of the step and the first middle front step, and spaced apart from the first middle rear step and formed at a rear right side of the first body; A first right rear step formed to be extended; a first right front step formed to be spaced apart from the first middle front step and extended to a front right side of the first body; and the first right rear step and the first A first planar core including a first right step formed in a predetermined length spaced apart from the first central step in the center of the right front step, and a plurality of coils stacked therein; a first left rear step of the first planar core A first lower secondary winding, a plurality of coils are stacked between the first left front step and surrounding the first left step of the first planar core, and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and the first A second lower secondary winding and a coil wound between the first right rear step of the planar core and the first right front step and surrounding the first right step of the first core; A first left step of the first planar core, a first central step of the first planar core and a first right step of the first planar core disposed on the first lower secondary winding and the second lower secondary winding. A primary winding, a plurality of coils are stacked, a first upper secondary winding arranged around the first left step of the first planar core on the primary winding, a plurality of coils are stacked, the first upper secondary A second upper secondary winding and a rectangular magnetic body disposed on the primary winding and surrounding the first right step of the first planar core, the first upper secondary winding; A first left rear step, a first left front step, a first left step, a first right rear of the first planar core on the primary winding and the second upper secondary winding. Includes a stepped first right front stepped, a first stepped ally, the first heavy room stepped, a first medium-room second planar cores disposed opposite to the stepped and the first central stepped.

The planar transformer according to the tenth embodiment includes a first body formed of a rectangular magnetic body, a first left rear step extending from a rear left side of the first body, and a front left side of the first body. A first left front step formed, a first left step formed with a predetermined length at the center of the first left rear step and the first left front step, and the first left rear step formed and spaced apart from the first main step A first mid posterior step formed at a rear central side of the first step, a first mid front step formed at a distance from the first left front step, and extended to a front central side of the first body, and the first mid rear A first central step formed at a predetermined length spaced apart from the first left stepped step at a center of the stepped step and the first mid-front stepped step, and formed to be spaced apart from the first middle rear stepped step and a rear right side of the first body; A first right rear step formed to be extended; a first right front step formed to be spaced apart from the first middle front step and extended to a front right side of the first body; and the first right rear step and the first A first planar core including a first right step formed in a predetermined length spaced apart from the first central step in the center of the right front step, and a plurality of coils stacked therein; a first left rear step of the first planar core A first lower secondary winding, a plurality of coils are stacked between the first left front step and surrounding the first left step of the first planar core, and a plurality of coils are stacked and spaced apart from the first lower secondary winding, and the first A second lower secondary winding and a coil wound between the first right rear step of the planar core and the first right front step and surrounding the first right step of the first core; A first left step of the first planar core, a first central step of the first planar core and a first right step of the first planar core disposed on the first lower secondary winding and the second lower secondary winding. A primary winding, a plurality of coils are stacked, a first upper secondary winding arranged around the first left step of the first planar core on the primary winding, a plurality of coils are stacked, the first upper secondary A second upper secondary winding and the first upper secondary winding, the primary winding, and the second upper portion disposed to be spaced apart from a winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first planar core; A second main body disposed on the secondary winding, the second main body formed of a quadrangular magnetic body, and extending to a rear left side of the second main body; A second left rear step which is disposed opposite to the first left rear step of the surface core, and a second left rear step which is formed extending from the front left side of the second body and disposed to face the first left front step of the first planar core; A second left stepped jaw, a second left stepped jaw formed at a center of the second left rear stepped jaw and the second left front stepped to face the first left stepped jaw of the first planar core, and A second middle rear step which is formed to be spaced apart from a second left rear step and extends on the rear center side of the second main body and is disposed to face the first right rear step of the first planar core; A second middle front step which is formed to extend to a front central side of the first opposing step of the first planar core and is disposed at the center of the second middle rear step and the second middle front step; Mold to length And a second central step which is disposed to face the first central step of the first planar core, and extends to a rear right side of the second main body and disposed to face the first middle rear step of the first plane core. A second right rear step which is formed extending from the front right side of the second main body and disposed to face the first middle front step of the first plane core; and the second right rear step And a second planar core formed at a center of the second right front step and having a second right step disposed to face the first right step of the first planar core.

Since the planar transformer according to the embodiments can adjust the leakage inductance by adjusting the width of the core of the leakage inductor, sufficient leakage inductance is secured inside the planar transformer even when a core having a low permeability is not used separately or a leakage inductor is not used externally. It can work.

1 is an exploded perspective view of a planar transformer according to a first embodiment of the present invention.
2 is a perspective view of a planar transformer according to a first embodiment of the present invention.
3 is an exploded perspective view of another modification of the planar transformer according to the first embodiment of the present invention.
4 is a perspective view of the planar transformer of FIG. 3.
5 is an exploded perspective view of still another modification of the planar transformer according to the first embodiment of the present invention.
6 is a perspective view of the planar transformer of FIG. 5.
7 is an exploded perspective view of a planar transformer according to a second embodiment of the present invention.
8 is a perspective view of a planar transformer according to a second embodiment of the present invention.
9 is an exploded perspective view of a planar transformer according to a third embodiment of the present invention.
10 is a perspective view of a planar transformer according to a third embodiment of the present invention.
11 is an exploded perspective view of another modification of the planar transformer according to the third embodiment of the present invention.
12 is a perspective view of the planar transformer of FIG. 11.
13 is an exploded perspective view of still another modification of the planar transformer according to the third embodiment of the present invention.
14 is a perspective view of the planar transformer of FIG. 13.
15 is an exploded perspective view of a planar transformer according to a fourth embodiment of the present invention.
16 is a perspective view of a planar transformer according to a fourth embodiment of the present invention.
17 is an exploded perspective view of a planar transformer according to a fifth embodiment of the present invention.
18 is a perspective view of a planar transformer according to a fifth embodiment of the present invention.
19 is an exploded perspective view of a planar transformer according to a sixth embodiment of the present invention.
20 is an exploded perspective view of a planar transformer according to a seventh embodiment of the present invention.
21 is a perspective view of a planar transformer according to a seventh embodiment of the present invention.
22 is an exploded perspective view of a planar transformer according to an eighth embodiment of the present invention.
23 is a perspective view of a planar transformer according to an eighth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 to 6, a planar transformer according to a first embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of a planar transformer according to a first embodiment of the present invention, and FIG. 3 is a perspective view of another modification of the planar transformer according to the first embodiment of the present invention, FIG. 4 is a perspective view of the planar transformer of FIG. 3, and FIG. 6 is an exploded perspective view of still another modification of the planar transformer according to the first embodiment of the present invention, and FIG. 6 is a perspective view of the planar transformer of FIG.

As illustrated in FIG. 1, the first left planar core 1110 may include an eleventh body 1111 formed of a rectangular magnetic body and an eleventh rear step 1114 extending to a rear side of the eleventh body 1111. ), An eleventh front step 1112 extending from the front side of the eleventh main body 1111, and a predetermined length at the center of the eleventh rear step 1114 and the eleventh front step 1111. A first left planar core 1113, the first right planar core 1120 is spaced apart from the first left planar core 1110, and a twelfth body 1121 formed of a rectangular magnetic body; A twelfth rear step 1124 extending on the rear side of the twelfth body 1121, a twelfth front step 1122 extending on the front side of the twelfth body 1121, and the twelfth rear A first right stepped step 1123 formed to a predetermined length at the center of the stepped step 1124 and the twelfth front stepped step 1122. The first center plane core 1130 is spaced apart from the first left plane core 1110 and the first right plane core 1120, and the thirteenth body 1131 may be formed of a magnetic material having a rectangular shape. A thirteenth rear step 1134 extending from a rear side of the thirteenth main body 1131, a thirteenth front step 1132 extending from a front side of the thirteenth main body 1131, and the thirteenth step; And a first central step 1333 formed at a predetermined length in the center of the rear step 1134 and the thirteenth front step 1132. The eleventh body 1111, the twelfth body 1121, or the thirteenth body 1131 may be formed of a magnetic material having a rectangular shape, a square shape, an ellipse shape, a circular shape, and the like, depending on the electronic product employed.

The first left planar core 1110 may include the eleventh rear stepped 1114, the eleventh front stepped 1112 and the first left stepped 1113 integrally formed with the eleventh main body 1111. The first central planar core 1130 may include the thirteenth rear step 1134, the thirteenth front step 1132, and the first central step 1133 integrally with the thirteenth body 1131. The first right planar core 1120 may include the twelfth rear step 1124, the twelfth front step 1122, and the first right step 1123 on the twelfth body 1121. It can be formed integrally.

The first lower secondary windings 1411 and 1412 have a plurality of coils stacked therebetween, and the first left plane between the eleventh rear step 1114 and the eleventh front step 1112 of the first left planar core 1110. It is disposed surrounding the first left step 1113 of the core 1110.

A plurality of coils are stacked in the second lower secondary windings 1421 and 1422, and are spaced apart from the first lower secondary windings 1411 and 1412, and a twelfth rear step of the first right planar core 1120 ( 1124 and the twelfth front step 1122 are disposed surrounding the first right step 1123 of the first right planar core 1120.

The primary winding 1311 is formed in a K-shape by winding a plurality of coils, and the first left planar core on the first lower secondary windings 1411 and 1412 and the second lower secondary windings 1421 and 1422. Surrounds a first left step 1113 of 1110, a first center step 1133 of the first central planar core 1130, and a first right step 1123 of the first right planar core 1120. Is placed.

A plurality of coils are stacked on the first upper secondary windings 1421 and 1422, and are disposed on the primary winding 1311 to surround the first left step 1111 of the first left planar core 1110. A plurality of coils are stacked on the second upper secondary windings 1423 and 1424, and are spaced apart from the first upper secondary windings 1421 and 1422, and the first right planar core is disposed on the primary winding 1311. It is disposed surrounding the first right stepped step 1123 of the 1120.

The second left planar core 1210 is formed of a magnetic material having a rectangular shape, and the eleventh rear step 1114 and the eleventh of the first left planar core 1110 on the first upper secondary windings 1421 and 1422. It is disposed opposite the front step 1112 and the first left step 1113, the second right planar core 1220 is formed of a magnetic material of a rectangular shape, on the second upper secondary winding (1423, 1424) Spaced apart from the second left planar core 1210 and disposed to face the twelfth rear step 1124, the twelfth front step 1122, and the first right step 1123 of the first right planar core, The second central planar core 1230 is formed of a rectangular magnetic body, and is spaced apart between the second left planar core 1210 and the second right planar core 1220 on the primary winding 1311. A thirteenth rear step 1134 and a thirteenth front step 113 of the first central plane core; 2) and the first central step 1133 are disposed. On the other hand, the second left planar core 1210, the second right planar core 1220, or the second center plane core 1230 may be formed of a magnetic material having various shapes such as rectangular, square, elliptical, and circular, depending on the electronic product employed. Can be used.

As shown in FIG. 2, the planar transformer according to the first embodiment of the present invention includes a first left planar core 1110, a first lower secondary winding 1411 and 1412, a primary winding 1311, and a first upper secondary. A transformer TR1 is formed at an overlapping portion of the windings 1421 and 1422 and the second left planar core 1210, and includes a first center plane core 1130, a primary winding 1311, and a second center plane core ( 1230 constitutes a leakage inductor Lr at an overlapped portion, and includes a first right planar core 1120, a second lower secondary winding 1421 and 1422, a primary winding 1311, and a second upper secondary winding 1423. 1424 and the second right planar core 1220 constitute a transformer TR2 at the overlapping portion.

Meanwhile, between the first left planar core 1110 and the first lower secondary windings 1411 and 1412, between the first lower secondary windings 1411 and 1412 and the primary winding 1311, the primary winding 1311 and the first Between the first upper secondary windings 1421 and 1422, between the first upper secondary windings 1421 and 1422 and the second left planar core 1210, between the primary winding 1311 and the second center plane core 1230, and 1 between the right planar core 1120 and the second lower secondary windings 1421 and 1422, between the second lower secondary windings 1421 and 1422 and the primary winding 1311, the primary winding 1311 and the second upper secondary It is necessary to insulate between the windings 1423 and 1424, between the second upper secondary windings 1423 and 1424 and the second right planar core 1220.

The leakage inductor Lr is formed by the first lower secondary windings 1411 and 1412, the second lower secondary windings 1421 and 1422, the first upper secondary windings 1421 and 1422, or the second upper secondary windings 1423 and 1424. Since the planar transformer according to the first exemplary embodiment of the present invention does not employ a core having a low permeability, or does not need to employ a leakage inductor.

In addition, since the leakage inductance of the leakage inductor Lr can be adjusted by adjusting the width of the first center plane core 1130 or the width of the second center plane core 1230, the plane according to the first embodiment of the present invention. The transformer can ensure sufficient leakage inductance inside the planar transformer.

The eleventh front step 1112 and the second left planar core 1210 of the first left planar core 1110 may be spaced apart from each other so that a gap exists, or the eleventh rear step of the first left planar core 1110 may be performed. The first left flat core 1110 and the second left flat core 1210 may be disposed such that the air gap 1114 and the second left flat core 1210 are spaced apart from each other. By manipulating these voids, the leakage inductance of transformer TR1 can be adjusted.

In addition, the thirteenth front step 1132 of the first center plane core 1130 and the second center plane core 1230 may be spaced apart from each other, or there may be voids, or the thirteenth rear step of the first center plane core 1130. The first center plane core 1130 and the second center plane core 1230 may be disposed such that the air gap 1134 and the second center plane core 1230 are spaced apart from each other. By manipulating these voids, the leakage inductance of the leakage inductor can be adjusted.

In addition, the twelfth front step 1122 of the first right planar core 1120 and the second right planar core 1220 are spaced apart from each other, so that a gap exists or the twelfth rear of the first right planar core 1120 is present. The first right planar core 1120 and the second right planar core 1220 may be disposed such that the step 1124 and the second right planar core 1220 are spaced apart from each other so that a gap exists. By manipulating these voids, the leakage inductance of transformer TR2 can be adjusted.

The first left step 1113 of the first left planar core 1110 or the first right step 1123 of the first right planar core 1120 may be formed in a rectangular shape as illustrated in FIG. 1. have.

Meanwhile, the first left stepped 1113 of the first left planar core 1110 or the first right stepped 1123 of the first right planar core 1120 may have an elliptic shape 1115. 1125, or a first left step 1113 of the first left planar core 1110, or a first right step 1123 of the first right planar core 1120, as shown in FIG. 5. , Circular shapes 1116 and 1126, and may include first lower secondary windings 1411 and 1412, second lower secondary windings 1421 and 1422, first upper secondary windings 1421 and 1422, or second upper portions. As shown in FIGS. 3 to 6, the secondary windings 1423 and 1424 may be modified in various shapes to match the shape of the first left step 1113 or the first right step 1123.

A planar transformer according to a second embodiment of the present invention will be described with reference to FIGS. 7 and 8, FIG. 7 is an exploded perspective view of a planar transformer according to a second embodiment of the present invention, and FIG. A perspective view of a planar transformer according to a second embodiment, and hereinafter, only differences from the planar transformer according to the first embodiment of the present invention will be described.

As shown in FIG. 7, the second left planar core 2210 is disposed on the first upper secondary windings 2421 and 2422, and includes a twenty-first body 2211 and a twenty-first body 2211 formed of a rectangular magnetic body. The twenty-first rear step 2214 and the front side of the twenty-first body 2211 which are formed to extend to the rear side of the second side and are disposed to face the eleventh rear step 2114 of the first left planar core 2110. A twenty-first front step 2212 formed to extend and disposed to face the eleventh front step 2112 of the first left planar core 2110, the twenty-first back step 2214 and the twenty-first front step ( The second left stepped part 2213 is formed to have a predetermined length in the center of the 2212 and is disposed to face the first left stepped part 2113 of the first left planar core 2110.

The second right planar core 2220 is spaced apart from the second left planar core 2210 on the second upper secondary windings 2423 and 2424, and the twenty-second main body 2221 formed of a rectangular magnetic body; A twenty-second rear step 2224 extending from a rear side of the twenty-second main body 2221 and disposed to face a twelfth rear step 2124 of the first right planar core 2120, and the twenty-second main body A twenty-second front step 2222 and the twenty-second rear step 2224 which are formed to extend on the front side of the 2222 and are disposed to face the twelfth front step 2122 of the first right planar core 2120. And a second right stepped 2223 formed in a center of the twenty-second front stepped 2222 and disposed to face the first right stepped 2123 of the first right planar core 2120. .

The second center plane core 2230 is disposed between the second left plane core 2210 and the second right plane core 2220 on the primary winding 1311 and is formed of a rectangular magnetic material. A twenty-third rear step 2234 extending from the rear side of the twenty-third main body 2231 and the twenty-third main body 2231 and disposed to face the thirteenth rear step 2134 of the first central plane core 2130. And a twenty-third front step 2232 formed extending from the front side of the twenty-third main body 2231 and disposed to face the thirteenth front step 2132 of the first central plane core 2130; A second center formed at a predetermined length in the center of the twenty-third rear step 2234 and the twenty-third front step 2232 and disposed to face the first central step 2133 of the first central plane core 2130; It includes a step (2233).

Meanwhile, magnetic bodies of various shapes, such as rectangular, square, elliptical, and round, may be used according to electronic products in which the twenty-first body 2211, the twenty-second body 2221, or the twenty-third body 2231 are also employed.

In addition, the second left planar core 2210 may include the twenty-first rear step 2222, the twenty-first front step 2212, and the second left step 2222 integrally formed with the twenty-first body 2211. The second central plane core 2230 may include the twenty-third rear step 2234, the twenty-third front step 2232, and the second central step 2233 integrally formed with the twenty-third main body 2231. The second right side planar core 2220 may include the twenty-second rear step 2224, the twenty-second front step 2222, and the second right step 2222 integrated with the twenty-second main body 2221. It can be formed as.

9 to 14, a planar transformer according to a third embodiment of the present invention will be described. FIG. 9 is an exploded perspective view of a planar transformer according to a third embodiment of the present invention. 3 is a perspective view of a planar transformer according to a third embodiment, FIG. 11 is an exploded perspective view of another modified example of the planar transformer according to the third embodiment of the present invention, FIG. 12 is a perspective view of the planar transformer of FIG. 14 is an exploded perspective view of another modification of the planar transformer according to the third embodiment of FIG. 14, and FIG. 14 is a perspective view of the planar transformer of FIG. 13. Shall be.

As shown in FIG. 9, the eleventh center plane core 3130 is spaced apart from the first left plane core 3110 and the first right plane core 3120, and includes a thirteenth body formed of a rectangular magnetic body. 3131 and a first left side step 3113 of the first left planar core 3110 and a first right side of the first right planar core 3120 which are formed to extend on the rear side of the thirteenth main body 3131. A thirteenth rear step 3133 disposed between the step 3123, an extension of the front side of the thirteenth main body 3131, and an eleventh front step 3112 of the first left planar core 3110; And a thirteenth front step 3132 disposed between the twelfth front step 3122 of the first right planar core 3120.

A twelfth center plane core 3140 is disposed between the first left plane core 3110 and the first right plane core 3120, spaced apart from the eleventh center plane core 3130, and has a rectangular magnetic body. A fourteenth main body 3141 and a rear side of the fourteenth main body 3141 and formed at an eleventh rear step 3114 of the first left flat core 3110 and the first right flat core ( A fourteenth rear step 3143 disposed between the twelfth rear step 3124 of the 3120 and an extension of the front side of the fourteenth main body 3141, and the first left flat core 3110 of the first left flat core 3110. And a fourteenth front step 3314 disposed between the left step 3113 and the first right step 3123 of the first right planar core 3120.

The twenty-first center plane core 3230 is formed of a magnetic material having a rectangular shape, and is spaced apart from the second left plane core 3210 and the second right plane core 3220 on the primary winding 1311. The thirteenth rear step 3133 and the thirteenth front step 3132 of the first center plane core 3110 are disposed to face each other, and the twenty-second center plane core 3240 is formed of a magnetic material having a rectangular shape. Between the second left planar core 3210 and the second right planar core 3220 on the primary winding 3311, spaced apart from the twenty-first center plane core 3230, and the twelfth center plane core ( It is disposed to face the fourteenth rear step 3143 and the fourteenth front step 3314 of 3140.

The leakage inductor Lr1 is formed at an overlapping portion of the eleventh center plane core 3130, the primary winding 3311, and the twenty-first center plane core 3230, and the twenty-first center plane core 3230, the primary winding. A leakage inductor Lr2 is configured at a portion where the 1313 and the 22nd center plane cores 3240 overlap.

The planar transformer according to the third embodiment must include the eleventh center plane core 3130, the twelfth center plane core 3140, the twenty-first center plane core 3230, and the twenty-second center plane core 3240. It is not.

The planar transformer according to the third embodiment includes an eleventh center plane core 3130 and a twenty-first center plane core 3230 as required, or a twelfth center plane core 3140 and a twenty-second center plane core 3240. It is also possible to include).

A planar transformer according to a fourth embodiment of the present invention will be described with reference to FIGS. 15 and 16. FIG. 15 is an exploded perspective view of a planar transformer according to a fourth embodiment of the present invention. 4 is a perspective view of a planar transformer according to a fourth embodiment, and hereinafter, only differences from the planar transformer according to the third embodiment of the present invention will be described.

The twenty-first center plane core 4230 is spaced apart and disposed between the second left plane core 4210 and the second right plane core 4220 on the primary winding 1311, as shown in FIG. 15. A twenty-third body 4231 formed of a magnetic material of the second body and an extension of a rear side of the twenty-third body 4231 and disposed to face the thirteenth rear step 4133 of the eleventh center plane core 4130; A twenty-third rear step 4233 and a twenty-third front step that extends to the front side of the twenty-third main body 4231 and is disposed to face the thirteenth front step 4132 of the eleventh center plane core 4130 ( 4232).

A twenty-second center plane core 4240 is spaced apart from the twenty-first center plane core 4230 between the second left plane core 4210 and the second right plane core 4220 on the primary winding 1311. And a twenty-fourth body 4241 formed of a quadrangular magnetic body, and extending to a rear side of the twenty-fourth body 4241, and a fourteenth rear step 4143 of the twelfth center plane core 4140. A twenty-fourth rear step 4423 disposed to face the second twenty-fourth rear end 4424 and extending toward the front side of the twenty-fourth main body 4241 and disposed to face the fourteenth front step 4414 of the twelfth center plane core 4140. A twenty-fourth front step 4242.

The plane transformer according to the fourth embodiment must also include the eleventh center plane core 4130, the twelfth center plane core 4140, the twenty-first center plane core 4230, and the twenty-second center plane core 4240. It is not.

The planar transformer according to the fourth embodiment also includes an eleventh center plane core 4130 and a twenty-first center plane core 4230, or a twelfth center plane core 4140 and a twenty-second center plane core 4240 as necessary. It is also possible to include).

17 and 18, a planar transformer according to a fifth embodiment of the present invention will be described. FIG. 17 is an exploded perspective view of a planar transformer according to a fifth embodiment of the present invention. A perspective view of a planar transformer according to the fifth embodiment.

As shown in FIG. 17, the first planar core 5100 includes a first main body 5111 formed of a rectangular magnetic body and a first left rear stepped portion extending from a rear left side of the first main body 5111 ( 5114, a first left front step 5121 extending from the front left side of the first body 5111, and a center of the first left rear step 5114 and the first left front step 5112. A first left rear step 5151 formed to a predetermined length in the first left rear step 5114 and spaced apart from the first left rear step 5114 and extending at a rear center side of the first body 5111 ( 5134, a first mid-front stepped 5122 formed to be spaced apart from the first left front stepped 5112, and extended to a front central side of the first main body 5111, and the first mid-rear stepped stepped ( 5134 and a first middle spaced apart from the first left stepped 5113 at the center of the first middle front stepped 5132 to have a predetermined length. A first right rear step 5124 formed to be spaced apart from the hem step 5133, the first middle rear step 5134, and extended to a rear right side of the first main body 5111; A first right front stepped step 5222 and a first right rear stepped step 5124 and the first right front side which are formed to be spaced apart from the step step 5152 and extended to the front right side of the first body 5111. A first right stepped step 5123 formed at a predetermined length and spaced apart from the first central step step 5153 at the center of the step 5122 is included. On the other hand, the first body 5111 may be a magnetic body of various shapes, such as rectangular, square, elliptical, circular, depending on the electronic product is employed.

Herein, the first planar core 5100 may include the first left rear step 5114, the first left front step 5112, the first left step 5151, and the first mid rear step 5134. The first mid-front step 5152, the first central step 5133, the first right rear step 5124, the first right front step 5122 and the first right step 5123 are formed in the first step. 1 may be formed integrally with the body (5111).

A plurality of coils are stacked in the first lower secondary windings 5411 and 5412, and the first plane is disposed between the first left rear step 5114 and the first left front step 5112 of the first planar core 5100. It is disposed surrounding the first left stepped 5113 of the core 5100.

A plurality of coils are stacked in the second lower secondary windings 5251 and 5422, and are spaced apart from the first lower secondary windings 5411 and 5412, and the first right rear step of the first planar core 5100 ( It is disposed between the 5124 and the first right front step (5122) surrounding the first right step (5123) of the first planar core (5100).

The primary winding 5311 is formed in a K-shape by winding a plurality of coils, and is formed on the first lower secondary windings 5411 and 5412 and the second lower secondary windings 5251 and 5422. The first left stepped 5131 of 5100, the first central stepped 5133 of the first planar core 5100, and the first right stepped 5123 of the first planar core 5100 are disposed to surround the first step.

A plurality of coils are stacked on the first upper secondary windings 5251 and 5422, and are disposed on the primary windings 5311 to surround the first left stepped 5113 of the first planar core 5100. The second upper secondary windings 5253 and 5424 are stacked with a plurality of coils, and are spaced apart from the first upper secondary windings 5251 and 5422, and the first planar core 5100 is disposed on the primary winding 5311. It is disposed surrounding the first right stepped step (5123).

The second left planar core 5210 is formed of a magnetic material having a rectangular shape, and the first left rear step 5114 of the first planar core 5100 and the first on the first upper secondary windings 5251 and 5422. The front left stepped 5112 and the first left stepped 5131 are disposed to face each other, and the second right planar core 5220 is formed of a magnetic material having a rectangular shape, and is formed on the second upper secondary windings 5253 and 5424. The second left planar core 5210 is disposed to be spaced apart from each other, and is disposed on the first right rear step 5124, the first right front step 5512, and the first right step 5123 of the first flat core 5100. The second center plane core 5230 is disposed to face each other, and is formed of a magnetic material having a rectangular shape, and is disposed between the second left plane core 5210 and the second right plane core 5220 on the primary winding 5311. A first intermediate rear step 5134 and a first intermediate front step 5 of the first planar core 5100 5132 and the first central step 5133 are disposed. Meanwhile, the second left planar core 5210 or the second right planar core 5220 may be formed of a magnetic material having a rectangular shape, a square shape, an oval shape, and a circular shape, depending on the electronic product employed.

As shown in FIG. 18, the planar transformer according to the fifth embodiment of the present invention includes a first planar core 5100, a first lower secondary winding 1411 and 1412, a primary winding 1311, and a first upper secondary winding. The transformers (TR1) constitute a portion of the overlapping (1421, 1422) and the second left planar core, leakage from the portion of the first planar core 5100, the primary winding 1311 and the second center plane core overlap An inductor Lr and constitutes a first planar core 5100, a second lower secondary winding 1421, 1422, a primary winding 1311, a second upper secondary winding 1423, 1424, and a second right planar core. Constitutes a transformer TR2 at the overlapping portion.

Meanwhile, between the first planar core 5100 and the first lower secondary windings 5411 and 5412, between the first lower secondary windings 5411 and 5412 and the primary winding 5311, and the primary winding 5311 and the first. Between the upper secondary windings 5251 and 5422, between the first upper secondary windings 5251 and 5422 and the second left planar core, between the primary winding 5311 and the second center plane core 5230, and the first planar core ( Between 5100 and second lower secondary windings 5251, 5422, between second lower secondary windings 5251, 5422 and primary winding 5311, primary winding 5311, and second upper secondary windings 5253, 5424 ), It is necessary to insulate between the second upper secondary windings 5253 and 5424 and the second right planar core 5220.

The leakage inductor Lr is formed by the first lower secondary windings 5411 and 5412, the second lower secondary windings 5251 and 5422, the first upper secondary windings 5251 and 5422, and the second upper secondary windings 5253 and 5424. Since the planar transformer according to the fifth exemplary embodiment of the present invention does not employ a core having a low permeability, or does not need to employ a leakage inductor.

In addition, since the leakage inductance of the leakage inductor Lr can be adjusted by adjusting the width of the first mid-front step 5152 of the first planar core 5100 or the width of the second center planar core 5230, the present invention. The planar transformer according to the fifth embodiment of the present invention can sufficiently secure the leakage inductance inside the planar transformer.

On the other hand, the first left front step 5121 of the first planar core 5100 and the second left planar core 5210 are spaced apart from each other, or there is a gap, or the first left rear step of the first planar core 5100 ( The first planar core 5100 and the second left planar core 5210 may be disposed such that the air gap 5114 and the second left planar core 5210 are spaced apart from each other. By manipulating these voids, the leakage inductance of transformer TR1 can be adjusted.

In addition, the first mid-front step 5132 of the first planar core 5100 and the second center planar core 5230 may be spaced apart from each other, or there may be a gap, or the first mid-rear step of the first planar core 5100 may be present. The first planar core 5100 and the second center planar core 5230 may be disposed such that the gap 5134 and the second center plane core 5230 are spaced apart from each other. By manipulating these voids, the leakage inductance of the leakage inductor Lr can be adjusted.

In addition, the first right front step 5512 of the first planar core 5100 and the second right planar core 5220 are spaced apart from each other, so that a gap exists or the first right rear of the first planar core 5100 is present. The first planar core 5100 and the second right planar core 5220 may be disposed such that the step 5124 and the second right planar core 5220 are spaced apart from each other so that a gap exists. By manipulating these voids, the leakage inductance of transformer TR2 can be adjusted.

The first left stepped 5131 of the first planar core 5100, or the first right stepped 5123 of the first planar core 5100 may be formed in a quadrangular shape.

Meanwhile, the first left stepped 5113 of the first planar core 5100, or the first right stepped 5123 of the first planar core 5100 may have an elliptic shape 5116 as illustrated in FIG. 17. The first left stepped 5131 of the first planar core 5100 or the first right stepped 5123 of the first planar core 5100 may have a circular shape 5115 as illustrated in FIG. 17. The first lower secondary winding (5411, 5412), the second lower secondary winding (5421, 5422), the first upper secondary winding (5421, 5422) or the second upper secondary winding (5423, 5424) As illustrated in FIG. 17, various shapes may be modified to match the shape of the first left stepped 5113 or the first right stepped 5123.

A planar transformer according to a sixth embodiment of the present invention will be described with reference to FIG. 19, and FIG. 19 is an exploded perspective view of the planar transformer according to the sixth embodiment of the present invention. Hereinafter, a fifth embodiment of the present invention will be described. Only the difference from the planar transformer will be described.

As shown in FIG. 19, the second left planar core 6210 is disposed on the first upper secondary windings 1421 and 1422, and includes a twenty-first body 6211 formed of a rectangular magnetic body and the twenty-first body. A twenty-first rear stepped 6214 extending from the rear side of the 6211 and disposed to face the first left rear stepped 6141 of the first planar core 6100; A twenty-first front stepped 6212 formed to extend in the front side and disposed to face the first left front stepped 6112 of the first planar core 6100; and the twenty-first back stepped 6214 and the twenty-first step. A second left stepped part 6213 is formed in a center of the front stepped part 6212 and has a predetermined length and is disposed to face the first left stepped part 6113 of the first planar core 6100.

The second right planar core 6220 is spaced apart from the second left planar core 6210 on the second upper secondary windings 6423 and 6424, and the twenty-second main body 6221 is formed of a rectangular magnetic body. And a twenty-second rear step 6242 which is formed to extend to a rear side of the twenty-second main body 6221 and is disposed to face the first right rear step step 6224 of the first planar core 6100, and the twenty-second step. A twenty-second front stepped 6222 formed to extend on a front side of the main body 6221 and disposed to face the first right front stepped 6222 of the first planar core 6100, and the twenty-second rear stepped 6224. ) And a second right stepped 6223 formed at a center of the twenty-second front stepped 6242 and disposed to face the first right stepped 6223 of the first planar core 6100. .

The second center plane core 6230 is spaced between the second left plane core 6210 and the second right plane core 6220 on the primary winding 6311 and formed of a rectangular magnetic material. A twenty-third main step 6241 is formed to extend to the rear side of the twenty-third main body 6161 and is disposed to face the first mid-rear stepped 6132 of the first planar core 6100. And a twenty-third front stepping step 6322 formed extending from the front side of the twenty-third main body 6321 and disposed to face the first mid-front stepping step 6132 of the first planar core 6100; A second central stepped portion formed at a center of the twenty-third rear stepped 6242 and the twenty-third front stepped 6322 and disposed to face the first central stepped 6133 of the first planar core 5100. (6233).

The second left planar core 6210 may include the twenty-first rear step 6212, the twenty-first front step 6212, and the second left step 6213 integrally with the twenty-first body 6221. The second central planar core 6230 may include the twenty-third rear stepped 6623, the twenty-third front stepped 6242, and the second central stepped 6623 to the twenty-third main body 6321. The second right side planar core 6220 may be integrally formed, and the twenty-second rear stepped 6224, the twenty-second front stepped 6162, and the second right stepped 6223 may be formed in the twenty-second main body 6221. It may be formed integrally with).

A planar transformer according to a seventh embodiment of the present invention will be described with reference to FIGS. 20 and 21. FIG. 20 is an exploded perspective view of a planar transformer according to a seventh embodiment of the present invention. A perspective view of a planar transformer according to a seventh embodiment will be described below only with respect to the difference from the planar transformer according to the sixth embodiment of the present invention.

As shown in FIG. 20, the second planar core 7200 is formed of a magnetic material having a rectangular shape, and the first upper secondary windings 7171 and 7422, the primary winding 7311, and the second upper secondary winding ( 7423, 7424, a first left rear step 7141, a first left front step 7112, a first left step 7141, and a first right rear step 7141 of the first planar core 7100. The first right front stepped 7122, the first right front stepped 7123, the first middle rear stepped 7134, the first middle front stepped 7122, and the first central stepped 7133 are disposed.

As shown in FIG. 21, the planar transformer according to the seventh embodiment of the present invention includes a first planar core 7100, a first lower secondary winding 7171 and 7412, a primary winding 7311, and a first upper secondary winding. The transformers TR1 are formed at portions where the 7742 and 7422 and the second planar core 7200 overlap, and the first planar core 7100, the primary winding 7311, and the second planar core 7200 overlap each other. A leakage inductor (Lr) at the portion of the first plane core (7100), the second lower secondary winding (7421, 7422), the primary winding (7311), the second upper secondary winding (1423, 1424) The transformer TR2 is configured at a portion where the two plane cores 7200 overlap.

A planar transformer according to an eighth embodiment of the present invention will be described with reference to FIGS. 22 and 23. FIG. 22 is an exploded perspective view of a planar transformer according to an eighth embodiment of the present invention. 8 is a perspective view of a planar transformer according to an eighth embodiment, hereinafter, only differences from the planar transformer according to the seventh embodiment of the present invention will be described.

The second planar core 8200 is disposed on the first upper secondary windings 8221, 8422, the primary winding 8311, and the second upper secondary windings 8423, 8424, as shown in FIG. 22, A second main body 8211 formed of a rectangular magnetic body and an extension of the rear left side of the second main body 8211 are formed to face the first left rear stepped 8214 of the first planar core 8100. A second left rear stepped 8214 disposed on the front left side of the second main body 8111 and formed to face the first left front stepped 8212 of the first planar core 8100. A first left side of the first planar core 8100 is formed to have a predetermined length at the center of the second left front step 8212, the second left rear step 821, and the second left front step 8212. A second left stepped 8213 disposed to face the stepped 8313 and spaced apart from the second left rear stepped 8214 A second mid-rear stepped 8342 formed to extend to the rear center side of the second main body 8111 and disposed to face the first right rear stepped 8224 of the first planar core 8100; A second mid-front stepped 8232 formed to extend toward the front center side of the main body 8111 and disposed to face the first right front step-step 8222 of the first planar core 8100, and the second mid-rear The second center step 8333 is formed to have a predetermined length at the center of the step step 8342 and the second mid front step step 8232 and is disposed to face the first center step 8133 of the first planar core 8100. And a second right rear stepped 8224 extending to the rear right side of the second main body 8111 and disposed to face the first middle rear stepped 8342 of the first planar core 8100. And extends to the front right side of the second main body 8211 and opposes the first middle front step 8321 of the first planar core 8100. The second right front stepped 8222, the second right rear stepped 8224 and the second right front stepped 8222 are formed to have a predetermined length and are formed of the first planar core 8100. And a second right stepped 8223 disposed to face the first right stepped 8223.

Here, the second planar core 7200 may include the second left rear step 821, the second left front step 8212, the second left step 6222, and the second mid rear step 882, The second middle front step 8222, the second center step 8333, the second right rear step 8222, the second right front step 8222, and the second right step 823 are the first steps. 2 may be integrally formed with the body (8211).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

Claims (172)

An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, a thirteenth rear stepped extending from a rear side of the thirteenth body, A first central plane core comprising a thirteenth front stepped portion extending from a front side of the main body and a first central stepped portion formed at a predetermined length at a center of the thirteenth rear stepped portion and the thirteenth front stepped portion;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked and disposed spaced apart from the first lower secondary windings 1411 and 1412, and between the twelfth rear step of the first right planar core and the twelfth front step of the first right planar core. A second lower secondary winding disposed around the first right step;
A coil is formed by winding a plurality, and a first left step of the first left planar core, a first left step of the first center plane core and the first on the first lower secondary winding and the second lower secondary winding. A primary winding disposed surrounding the first right step of the right planar core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A second left planar core formed of a rectangular magnetic body and disposed on the first upper secondary winding to face the eleventh rear step, the eleventh front step, and the first left step of the first left planar core;
It is formed of a rectangular magnetic material, and is disposed on the second upper secondary winding, spaced apart from the second left planar core, on the twelfth rear step, the twelfth front step, and the first right step of the first right planar core. A second right planar core disposed oppositely; And
A magnetic material having a rectangular shape, spaced between the second left planar core and the second right planar core on the primary winding, the thirteenth rear step, the thirteenth front step of the first central planar core, and And a second central planar core disposed opposite the first central step. The method of claim 1,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. The method of claim 1,
And the first central planar core has the thirteenth rear step, the thirteenth front step, and the first central step integral with the thirteenth body. The method of claim 1,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. The method of claim 1,
And a first left step of the first left planar core is formed in a quadrangular shape. The method of claim 1,
And a first right step of the first right planar core is formed in a quadrangular shape. The method of claim 1,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. The method of claim 1,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. The method of claim 1,
And the eleventh front step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. The method of claim 1,
And the eleventh rear step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. The method of claim 1,
And a thirteenth front step of the first central planar core and the second central planar core are spaced apart from each other to form a gap. The method of claim 1,
And a thirteenth rear step of the first central planar core and the second central planar core are spaced apart from each other to form a gap. The method of claim 1,
And a twelfth front step of the first right planar core and the second right plane core are spaced apart from each other. The method of claim 1,
And a twelfth rear step of the first right planar core and the second right planar core are spaced apart from each other. An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, a thirteenth rear stepped extending from a rear side of the thirteenth body, A first central plane core comprising a thirteenth front stepped portion extending from a front side of the main body and a first central stepped portion formed at a predetermined length at a center of the thirteenth rear stepped portion and the thirteenth front stepped portion;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and enclosing the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and a first left step of the first left planar core, a first left step of the first center plane core and the first on the first lower secondary winding and the second lower secondary winding. A primary winding disposed surrounding the first right step of the right planar core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A twenty-first body disposed on the first upper secondary winding and formed on a rear side of the twenty-first body, the twenty-first body formed of a rectangular magnetic body, and opposed to the eleventh rear step of the first left planar core; A twenty-first rear step, an twenty-first front step formed extending from the front side of the twenty-first body, and disposed to face the eleventh front step of the first left planar core; A second left planar core having a predetermined length at the center of the step and including a second left step which is disposed opposite the first left step of the first left planar core;
A twenty-second main body disposed on the second upper secondary winding, spaced apart from the second left planar core, formed of a quadrangular magnetic body, and extended to a rear side of the twenty-second main body, A twenty-second rear step that is disposed to face the twelfth rear step; a twenty-second front step that extends to the front side of the twenty-second main body and is disposed to face the twelfth front step of the first right planar core; A second right planar core formed at a center of the twenty-second rear step and the twenty-second front step and including a second right step disposed opposite the first right step of the first right planar core; And
A twenty-third body disposed between the second left-plane core and the second right-plane core on the primary winding, the twenty-third body formed of a rectangular magnetic body, and extending from a rear side of the twenty-third body; A twenty-third rear step which is disposed opposite to the thirteenth rear step of the central planar core; and a twenty-third extending which is formed on the front side of the twenty-third main body and disposed to face the thirteenth front step of the first central plane core; A second center including a front step, a second center step formed at a predetermined length at a center of the twenty-third rear step and the twenty-third front step and disposed opposite the first center step of the first central plane core; Planar transformer containing planar cores. 16. The method of claim 15,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. 16. The method of claim 15,
And the first central planar core has the thirteenth rear step, the thirteenth front step, and the first central step integral with the thirteenth body. 16. The method of claim 15,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. 16. The method of claim 15,
And the second left planar core has the twenty-first rear step, the twenty-first front step, and the second left step with the twenty-first body. 16. The method of claim 15,
And the second central planar core has the twenty-third rear step, the twenty-third front step, and the second central step integral with the twenty-third body. 16. The method of claim 15,
And the second right planar core has the twenty-second rear step, the twenty-second front step, and the second right step integral with the twenty-second body. 16. The method of claim 15,
And a first left step of the first left planar core is formed in a quadrangular shape. 16. The method of claim 15,
And a first right step of the first right planar core is formed in a quadrangular shape. 16. The method of claim 15,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. 16. The method of claim 15,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. 16. The method of claim 15,
And a second left step of the second left planar core has a quadrangular shape. 16. The method of claim 15,
And a second right step of the second right planar core has a quadrangular shape. 16. The method of claim 15,
And a second left step of the second left planar core is formed in an ellipse shape or a circular shape. 16. The method of claim 15,
And a second right step of the second right planar core is formed in an elliptic shape or a circular shape. 16. The method of claim 15,
And the eleventh front step of the first left planar core and the twenty-first front step of the second left planar core are spaced apart from each other. 16. The method of claim 15,
And the eleventh rear step of the first left planar core and the twenty-first rear step of the second left planar core are spaced apart from each other. 16. The method of claim 15,
And the thirteenth front step of the first central plane core and the twenty-third front step of the second central plane core are spaced apart from each other. 16. The method of claim 15,
And a thirteenth rear step of the first central plane core and a twenty-third rear step of the second central plane core are spaced apart from each other. 16. The method of claim 15,
And the twelfth front step of the first right planar core and the twenty-second front step of the second right planar core are spaced apart from each other. 16. The method of claim 15,
And the twelfth rear step of the first right planar core and the twenty-second rear step of the second right planar core are spaced apart from each other. An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, and formed to extend to a rear side of the thirteenth body; A thirteenth rear step which is disposed between a first left step and a first right step of the first right planar core; an extended front side of the thirteenth main body; an eleventh front step of the first left planar core; An eleventh center plane core comprising a thirteenth front step disposed between the twelfth front step of the first right planar core;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and enclosing the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and surrounds the first left step of the first left planar core and the first right step of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed between a thirteenth rear step and a thirteenth front step of the eleventh center plane core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A twenty-first left planar core formed of a rectangular magnetic body and disposed on the first upper secondary winding to face the eleventh rear step, the eleventh front step, and the first left step of the first left planar core;
It is formed of a rectangular magnetic material, and is disposed on the second upper secondary winding, spaced apart from the second left planar core, on the twelfth rear step, the twelfth front step, and the first right step of the first right planar core. A second right planar core disposed oppositely; And
Formed of a rectangular magnetic body and spaced apart between the second left planar core and the second right planar core on the primary winding, and the 13th rear step and the 13th front step of the eleventh center plane core. A planar transformer comprising a twenty-first central planar core disposed towards. The method of claim 36,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. The method of claim 36,
And wherein the eleventh center plane core has the thirteenth rear step and the thirteenth front step integral with the twelfth body. The method of claim 36,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. The method of claim 36,
And a first left step of the first left planar core is formed in a quadrangular shape. The method of claim 36,
And a first right step of the first right planar core is formed in a quadrangular shape. The method of claim 36,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. The method of claim 36,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. The method of claim 36,
And the eleventh front step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. The method of claim 36,
And the eleventh rear step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. The method of claim 36,
And a thirteenth front step of the eleventh center plane core and the twenty-first center plane core spaced apart from each other. The method of claim 36,
And a thirteenth rear step of the eleventh center plane core and the twenty-first center plane core are spaced apart from each other. The method of claim 36,
And a twelfth front step of the first right planar core and the second right plane core are spaced apart from each other. The method of claim 36,
And a twelfth rear step of the first right planar core and the second right planar core are spaced apart from each other. An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, and formed to extend to a rear side of the thirteenth body; A thirteenth rear step which is disposed between a first left step and a first right step of the first right planar core; an extended front side of the thirteenth main body; an eleventh front step of the first left planar core; An eleventh center plane core comprising a thirteenth front step disposed between the twelfth front step of the first right planar core;
A fourteenth main body spaced apart from the eleventh central planar core between the first left side planar core and the first right side planar core, and formed to extend from a rear side of the fourteenth main body; And a fourteenth rear step that is disposed between the eleventh rear step of the first left flat core and the twelfth rear step of the first right flat core, and extends on the front side of the fourteenth main body and the first left A twelfth central planar core comprising a fourteenth front step disposed between the first left step of the planar core and the first right step of the first right planar core;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and enclosing the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and surrounds the first left step of the first left planar core and the first right step of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed between a thirteenth rear step and a thirteenth front step of the eleventh center plane core, and a primary winding disposed between the fourteenth rear step and the fourteenth front step of the twelfth center plane core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A second left planar core formed of a rectangular magnetic body and disposed on the first upper secondary winding to face the eleventh rear step, the eleventh front step, and the first left step of the first left planar core;
It is formed of a rectangular magnetic material, and is disposed on the second upper secondary winding, spaced apart from the second left planar core, on the twelfth rear step, the twelfth front step, and the first right step of the first right planar core. A second right planar core disposed oppositely;
It is formed of a rectangular magnetic body, and is spaced apart between the second left planar core and the second right planar core on the primary winding, and faces the thirteenth rear step and the thirteenth front step of the first center plane core. A twenty-first central planar core disposed towards; And
Formed of a rectangular magnetic body, disposed between the second left plane core and the second right plane core on the primary winding, spaced apart from the twenty-first center plane core, and a fourteenth rear of the twelfth center plane core And a twenty-second central planar core disposed opposite the step and the fourteenth front step. 51. The method of claim 50,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. 51. The method of claim 50,
And the eleventh center plane core is formed with the thirteenth rear step and the thirteenth front step integral with the thirteenth body. 51. The method of claim 50,
And wherein the twelfth central planar core has the fourteenth rear step and the fourteenth front step integrated with the fourteenth body. 51. The method of claim 50,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. 51. The method of claim 50,
And a first left step of the first left planar core is formed in a quadrangular shape. 51. The method of claim 50,
And a first right step of the first right planar core is formed in a quadrangular shape. 51. The method of claim 50,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. 51. The method of claim 50,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. 51. The method of claim 50,
And the eleventh front step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. 51. The method of claim 50,
And the eleventh rear step of the first left planar core and the second left planar core are spaced apart from each other to form a gap. 51. The method of claim 50,
And a thirteenth front step of the eleventh center plane core and the twenty-first center plane core spaced apart from each other. 51. The method of claim 50,
And a thirteenth rear step of the eleventh center plane core and the twenty-first center plane core are spaced apart from each other. 51. The method of claim 50,
And a fourteenth front step of the twelfth central plane core and the twenty-second central plane core spaced apart from each other. 51. The method of claim 50,
And a fourteenth rear step of the twelfth central plane core and the twenty-second central plane core spaced apart from each other. 51. The method of claim 50,
And a twelfth front step of the first right planar core and the second right plane core are spaced apart from each other. 51. The method of claim 50,
And a twelfth rear step of the first right planar core and the second right planar core are spaced apart from each other. An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, and formed to extend to a rear side of the thirteenth body; A thirteenth rear step which is disposed between a first left step and a first right step of the first right planar core; an extended front side of the thirteenth main body; an eleventh front step of the first left planar core; An eleventh center plane core comprising a thirteenth front step disposed between the twelfth front step of the first right planar core;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and enclosing the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and surrounds the first left step of the first left planar core and the first right step of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed between a thirteenth rear step and a thirteenth front step of the eleventh center plane core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A twenty-first body disposed on the first upper secondary winding and formed on a rear side of the twenty-first body, the twenty-first body formed of a rectangular magnetic body, and opposed to the eleventh rear step of the first left planar core; A twenty-first rear step, an twenty-first front step formed extending from the front side of the twenty-first body, and disposed to face the eleventh front step of the first left planar core; A second left planar core having a predetermined length at the center of the step and including a second left step which is disposed opposite the first left step of the first left planar core;
A twenty-second main body disposed on the second upper secondary winding, spaced apart from the second left planar core, formed of a quadrangular magnetic body, and extended to a rear side of the twenty-second main body, A twenty-second rear step that is disposed to face the twelfth rear step; a twenty-second front step that extends to the front side of the twenty-second main body and is disposed to face the twelfth front step of the first right planar core; A second right planar core formed at a center of the twenty-second rear step and the twenty-second front step and including a second right step disposed opposite the first right step of the first right planar core; And
A twenty-third body disposed between the second left-plane core and the second right-plane core on the primary winding, the twenty-third body formed of a rectangular magnetic body, and extending from a rear side of the twenty-third body; A twenty-third rear step which is disposed opposite to the thirteenth rear step of the central plane core; and a twenty-third extending which is formed on the front side of the twenty-third main body; A planar transformer comprising a twenty-first central planar core comprising a front step. 68. The method of claim 67,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. 68. The method of claim 67,
And the eleventh center plane core is formed with the thirteenth rear step and the thirteenth front step integral with the thirteenth body. 68. The method of claim 67,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. 68. The method of claim 67,
And the second left planar core has the twenty-first rear step, the twenty-first front step, and the second left step with the twenty-first body. 68. The method of claim 67,
And the twenty-first center planar core has the twenty-third rear step and the twenty-third front step integrated with the twenty-third body. 68. The method of claim 67,
And the second right planar core has the twenty-second rear step, the twenty-second front step, and the second right step integral with the twenty-second body. 68. The method of claim 67,
And a first left step of the first left planar core is formed in a quadrangular shape. 68. The method of claim 67,
And a first right step of the first right planar core is formed in a quadrangular shape. 68. The method of claim 67,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. 68. The method of claim 67,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. 68. The method of claim 67,
And a second left step of the second left planar core has a quadrangular shape. 68. The method of claim 67,
And a second right step of the second right planar core has a quadrangular shape. 68. The method of claim 67,
And a second left step of the second left planar core is formed in an ellipse shape or a circular shape. 68. The method of claim 67,
And a second right step of the second right planar core is formed in an elliptic shape or a circular shape. 68. The method of claim 67,
And the eleventh front step of the first left planar core and the twenty-first front step of the second left planar core are spaced apart from each other. 68. The method of claim 67,
And the eleventh rear step of the first left planar core and the twenty-first rear step of the second left planar core are spaced apart from each other. 68. The method of claim 67,
And the thirteenth front step of the eleventh center plane core and the twenty-third front step of the twenty-first center plane core are spaced apart from each other. 68. The method of claim 67,
And a thirteenth rear step of the eleventh center plane core and a twenty-third rear step of the twenty-first center plane core spaced apart from each other. 68. The method of claim 67,
And a twelfth front step of the first right planar core and the second right plane core are spaced apart from each other. 68. The method of claim 67,
And a twelfth rear step of the first right planar core and the second right planar core are spaced apart from each other. An eleventh body formed of a rectangular magnetic body, an eleventh rear stepped to extend to the rear side of the eleventh body, an eleventh front stepped to extend to the front side of the eleventh body, and the eleventh rear stepped And a first left planar core including a first left step formed in a center of the eleventh front step with a predetermined length;
A twelfth body disposed spaced apart from the first left planar core, formed of a rectangular magnetic body, a twelfth rear step extending from a rear side of the twelfth body, and a front side of the twelfth body; A first right planar core comprising a formed twelfth front step and a first right step formed in a center of the twelfth rear step and the twelfth front step;
A thirteenth body spaced between the first left planar core and the first right planar core, the thirteenth body formed of a quadrangular magnetic body, and formed to extend to a rear side of the thirteenth body; A thirteenth rear step which is disposed between a first left step and a first right step of the first right planar core; an extended front side of the thirteenth main body; an eleventh front step of the first left planar core; An eleventh center plane core comprising a thirteenth front step disposed between the twelfth front step of the first right planar core;
A fourteenth main body spaced apart from the eleventh central planar core between the first left side planar core and the first right side planar core, and formed to extend from a rear side of the fourteenth main body; And a fourteenth rear step which is disposed between the eleventh rear step of the first left planar core and the twelfth rear step of the first right planar core and an extension of the front side of the thirteenth main body. A twelfth central planar core comprising a fourteenth front step disposed between the first left step of the planar core and the first right step of the first right planar core;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the eleventh rear step of the first left planar core and the eleventh front step and surrounding the first left step of the first left planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and enclosing the first right step of the first right planar core between the twelfth rear step and the twelfth front step of the first right planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and surrounds the first left step of the first left planar core and the first right step of the first right planar core on the first lower secondary winding and the second lower secondary winding. A primary winding disposed between a thirteenth rear step and a thirteenth front step of the eleventh center plane core, and a primary winding disposed between the fourteenth rear step and the fourteenth front step of the twelfth center plane core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first left planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding and surrounding the first right step of the first right planar core;
A twenty-first body disposed on the first upper secondary winding and formed on a rear side of the twenty-first body, the twenty-first body formed of a rectangular magnetic body, and opposed to the eleventh rear step of the first left planar core; A twenty-first rear step, an twenty-first front step formed extending from the front side of the twenty-first body, and disposed to face the eleventh front step of the first left planar core; A second left planar core having a predetermined length at the center of the step and including a second left step which is disposed opposite the first left step of the first left planar core;
A twenty-second main body disposed on the second upper secondary winding, spaced apart from the second left planar core, formed of a quadrangular magnetic body, and extended to a rear side of the twenty-second main body, A twenty-second rear step that is disposed to face the twelfth rear step; a twenty-second front step that extends to the front side of the twenty-second main body and is disposed to face the twelfth front step of the first right planar core; A second right planar core formed at a center of the twenty-second rear step and the twenty-second front step and including a second right step disposed opposite the first right step of the first right planar core;
A twenty-third body disposed between the second left-plane core and the second right-plane core on the primary winding, the twenty-third body formed of a rectangular magnetic body, and extending from a rear side of the twenty-third body; A twenty-third rear step which is disposed opposite to the thirteenth rear step of the central plane core; and a twenty-third extending which is formed on the front side of the twenty-third main body; A twenty-first central planar core comprising a front step; And
A twenty-fourth body spaced apart from the twenty-first center plane core and disposed between the second left plane core and the second right plane core on the primary winding and formed of a rectangular magnetic body; A twenty-fourth rear step which is formed to extend to the side and is disposed opposite to the fourteenth rear step of the twelfth center plane core; A planar transformer comprising a twenty-second central planar core comprising a twenty-fourth front step disposed opposite the step. 89. The method of claim 88,
And the first left planar core has the eleventh rear step, the eleventh front step, and the first left step with the eleventh body. 89. The method of claim 88,
And the eleventh center plane core is formed with the thirteenth rear step and the thirteenth front step integral with the thirteenth body. 89. The method of claim 88,
And wherein the twelfth central planar core has the fourteenth rear step and the fourteenth front step integrated with the fourteenth body. 89. The method of claim 88,
And the first right planar core has the twelfth rear step, the twelfth front step and the first right step integral with the twelfth body. 89. The method of claim 88,
And the second left planar core has the twenty-first rear step, the twenty-first front step, and the second left step with the twenty-first body. 89. The method of claim 88,
And the twenty-first center planar core has the twenty-third rear step and the twenty-third front step integrated with the twenty-third body. 89. The method of claim 88,
And the twenty-second central planar core has the twenty-fourth rear step and the twenty-fourth front step integral with the twenty-fourth body. 89. The method of claim 88,
And the second right planar core has the twenty-second rear step, the twenty-second front step, and the second right step integral with the twenty-second body. 89. The method of claim 88,
And a first left step of the first left planar core is formed in a quadrangular shape. 89. The method of claim 88,
And a first right step of the first right planar core is formed in a quadrangular shape. 89. The method of claim 88,
And a first left stepped portion of the first left planar core is formed in an ellipse shape or a circular shape. 89. The method of claim 88,
And a first right step of the first right planar core is formed in an ellipse shape or a circular shape. 89. The method of claim 88,
And a second left step of the second left planar core has a quadrangular shape. 89. The method of claim 88,
And a second right step of the second right planar core has a quadrangular shape. 89. The method of claim 88,
And a second left step of the second left planar core is formed in an ellipse shape or a circular shape. 89. The method of claim 88,
And a second right step of the second right planar core is formed in an elliptic shape or a circular shape. 89. The method of claim 88,
And the eleventh front step of the first left planar core and the twenty-first front step of the second left planar core are spaced apart from each other. 89. The method of claim 88,
And the eleventh rear step of the first left planar core and the twenty-first rear step of the second left planar core are spaced apart from each other. 89. The method of claim 88,
And the thirteenth front step of the eleventh center plane core and the twenty-third front step of the twenty-first center plane core are spaced apart from each other. 89. The method of claim 88,
And a thirteenth rear step of the eleventh center plane core and a twenty-third rear step of the twenty-first center plane core spaced apart from each other. 89. The method of claim 88,
And the fourteenth front step of the twelfth center plane core and the twenty-fourth front step of the twenty-second center plane core are spaced apart from each other. 89. The method of claim 88,
And the fourteenth rear step of the twelfth center plane core and the twenty-fourth rear step of the twenty-second center plane core are spaced apart from each other. 89. The method of claim 88,
And a twelfth front step of the first right planar core and the second right plane core are spaced apart from each other. 89. The method of claim 88,
And a twelfth rear step of the first right planar core and the second right planar core are spaced apart from each other. A first main body formed of a rectangular magnetic body, a first left rear step extending from the rear left side of the first body, and a first left front stepping part 5112 extending from the front left side of the first main body; And a first left step formed at a predetermined length at a center of the first left rear step and the first left front step, and spaced apart from the first left rear step and extended to a rear center side of the first body. And a first middle rear step formed spaced apart from the first left front step and extended to a front central side of the first body, the first middle rear step and the first middle front A first central step formed at a predetermined length and spaced apart from the first left step in the center of the room step, and a first right formed to be spaced apart from the first middle rear step and extended to the rear right side of the first body; Rear A stepped portion, a first right front mandrel formed to be spaced apart from the first middle front mandrel and extending on a front right side of the first body, the first right rear mandrel and the center of the first right front mandrel; A first planar core spaced apart from the first central step and including a first right step formed in a predetermined length;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the first left rear step of the first planar core and the first left front step and surrounding the first left step of the first planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and surrounding the first right step of the first planar core between the first right rear step and the first right front step of the first planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and on the first lower secondary winding and the second lower secondary winding, a first left step of the first planar core, a first central step of the first planar core and the first plane A primary winding disposed surrounding the first right step of the core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding to surround the first right step of the first planar core;
A second left planar core formed of a rectangular magnetic body and disposed on the first upper secondary winding to face a first left rear step, a first left front step, and a first left step of the first planar core;
A rectangular magnetic material is formed on the second upper secondary winding and is spaced apart from the second left planar core, and the first right rear step, the first right front step, and the first right step of the first planar core are disposed. A second right planar core disposed opposite the; And
It is formed of a rectangular magnetic material and is spaced apart between the second left planar core and the second right planar core on the primary winding, and the first middle rear step and the first middle front step of the first planar core. And a second central planar core disposed opposite the first central step. 113. The method of claim 113,
The first planar core may include the first left rear step, the first left front step, the first left step, the first mid rear step, the first middle front step, the first center step, and the first right step. And a rear step, the first right front step and the first right step are integrally formed in the first body. 113. The method of claim 113,
And a first left stepped portion of the first planar core has a quadrangular shape. 113. The method of claim 113,
And a first right step of the first planar core has a quadrangular shape. 113. The method of claim 113,
And a first left step of the first planar core is formed in an elliptic shape or a circular shape. 113. The method of claim 113,
And a first right step of the first planar core is formed in an elliptic shape or a circular shape. 113. The method of claim 113,
And the first left front step of the first planar core and the second left planar core are spaced apart from each other to form a gap. 113. The method of claim 113,
And the first left rear step of the first planar core and the second left planar core are spaced apart from each other. 113. The method of claim 113,
And a first gap between the first middle front step of the first planar core and the second center planar core are spaced apart from each other. 113. The method of claim 113,
And a gap between the first middle rear step of the first planar core and the second center planar core is spaced apart from each other. 113. The method of claim 113,
And a first gap between the first right front step of the first planar core and the second right planar core are spaced apart from each other. 113. The method of claim 113,
And the first right rear step of the first planar core and the second right planar core are spaced apart from each other to form a gap. A first main body formed of a rectangular magnetic body, a first left rear step extending from a rear left side of the first body, a first left front step extending from a front left side of the first main body, and A first left step formed in the center of the first left rear step and the first left front step and the first left rear step formed spaced apart from the first left rear step and extended to the rear center side of the first body; A first mid rear step, spaced apart from the first left front step, and extending from the front center side of the first main front step; the first mid rear step and the first mid front step A first central step formed at a predetermined length and spaced apart from the first left step, and a first right rear step formed to be spaced apart from the first middle rear step and extended to a rear right side of the first body; And a first right front stepped step formed spaced apart from the first middle front step step and extending to a front right side of the first body, and a center of the first right rear step step and the first right front step step. A first planar core including a first right stepped to a predetermined length spaced apart from the central step;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the first left rear step of the first planar core and the first left front step and surrounding the first left step of the first planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and surrounding the first right step of the first planar core between the first right rear step and the first right front step of the first planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and on the first lower secondary winding and the second lower secondary winding, a first left step of the first planar core, a first central step of the first planar core and the first plane A primary winding disposed surrounding the first right step of the core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding to surround the first right step of the first planar core;
The twenty-first body disposed on the first upper secondary winding and formed on a rear side of the twenty-first body formed of a rectangular magnetic body, and disposed to face the first left rear step of the first planar core. A twenty-first rear step, an twenty-first front step formed extending from the front side of the twenty-first body, and disposed to face the first left front step of the first planar core; A second left planar core which is formed at a predetermined length in the center of the step and includes a second left step which is disposed opposite the first left step of the first planar core;
A twenty-second main body disposed on the second upper secondary winding and spaced apart from the second left planar core; a twenty-second main body formed of a rectangular magnetic body; and an extension of a rear side of the twenty-second main body; A twenty-second rear step which is disposed to face the first rear step, an twenty-second front step which is formed extending to the front side of the twenty-second main body and disposed to face the first right front step of the first planar core; A second right planar core formed at a center of the twenty-second rear step and the twenty-second front step and including a second right step disposed opposite the first right step of the first planar core; And
A twenty-third body disposed between the second left-plane core and the second right-plane core on the primary winding, the twenty-third body formed of a rectangular magnetic body, and extending from a rear side of the twenty-third body; A twenty-third rear step which is disposed opposite to the first mid-rear step of the first planar core; and a twenty-third extending which is formed on the front side of the twenty-third main body; A second central plane including a front step and a second central step formed at a predetermined length at a center of the twenty-third rear step and the twenty-third front step and disposed opposite the first center step of the first planar core; Planar transformer containing cores. 126. The method of claim 125,
The first planar core may include the first left rear step, the first left front step, the first left step, the first mid rear step, the first middle front step, the first center step, and the first right step. And a rear step, the first right front step and the first right step are integrally formed in the first body. 126. The method of claim 125,
And the second left planar core has the twenty-first rear step, the twenty-first front step, and the second left step with the twenty-first body. 126. The method of claim 125,
And the second central planar core has the twenty-third rear step, the twenty-third front step, and the second central step integral with the twenty-third body. 126. The method of claim 125,
And the second right planar core has the twenty-second rear step, the twenty-second front step, and the second right step integral with the twenty-second body. 126. The method of claim 125,
And a first left stepped portion of the first planar core has a quadrangular shape. 126. The method of claim 125,
And a first right step of the first planar core has a quadrangular shape. 126. The method of claim 125,
And a first left step of the first planar core is formed in an elliptic shape or a circular shape. 126. The method of claim 125,
And a first right step of the first planar core is formed in an elliptic shape or a circular shape. 126. The method of claim 125,
And a second left step of the second left planar core has a quadrangular shape. 126. The method of claim 125,
And a second right step of the second right planar core has a quadrangular shape. 126. The method of claim 125,
And a second left step of the second left planar core is formed in an ellipse shape or a circular shape. 126. The method of claim 125,
And a second right step of the second right planar core is formed in an elliptic shape or a circular shape. 126. The method of claim 125,
And the first left front step of the first planar core and the twenty-first front step of the second left planar core are spaced apart from each other. 126. The method of claim 125,
And the first left rear step of the first planar core and the twenty-first rear step of the second left planar core are spaced apart from each other. 126. The method of claim 125,
And a gap between the first mid-front step of the first planar core and the twenty-third front step of the second center planar core to be spaced apart from each other. 126. The method of claim 125,
And a space between the first mid-rear step of the first planar core and the twenty-third rear step of the second center planar core are spaced apart from each other. 126. The method of claim 125,
And the first right front step of the first planar core and the twenty-third front step of the second right planar core are spaced apart from each other. 126. The method of claim 125,
And a gap between the first right rear step of the first planar core and the twenty-third rear step of the second right planar core. A first main body formed of a rectangular magnetic body, a first left rear step extending from a rear left side of the first body, a first left front step extending from a front left side of the first main body, and A first left step formed in the center of the first left rear step and the first left front step and the first left rear step formed spaced apart from the first left rear step and extended to the rear center side of the first body; A first mid rear step, spaced apart from the first left front step, and extending from the front center side of the first main front step; the first mid rear step and the first mid front step A first central step formed at a predetermined length and spaced apart from the first left step, and a first right rear step formed to be spaced apart from the first middle rear step and extended to a rear right side of the first body; And a first right front stepped step formed spaced apart from the first middle front step step and extending to a front right side of the first body, and a center of the first right rear step step and the first right front step step. A first planar core including a first right stepped to a predetermined length spaced apart from the central step;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the first left rear step of the first planar core and the first left front step and surrounding the first left step of the first planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and surrounding the first right step of the first planar core between the first right rear step and the first right front step of the first planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and on the first lower secondary winding and the second lower secondary winding, a first left step of the first planar core, a first central step of the first planar core and the first plane A primary winding disposed surrounding the first right step of the core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding to surround the first right step of the first planar core; And
It is formed of a rectangular magnetic material, the first left rear step of the first planar core, the first left front step, the first left step on the first upper secondary winding, the primary winding and the second upper secondary winding And a second planar core disposed to face the first right rear step, the first right front step, the first right step, the first mid rear step, the first middle front step, and the first central step. 143. The method of claim 144, wherein
The first planar core may include the first left rear step, the first left front step, the first left step, the first mid rear step, the first middle front step, the first center step, and the first right step. And a rear step, the first right front step and the first right step are integrally formed in the first body. 143. The method of claim 144, wherein
And a first left stepped portion of the first planar core has a quadrangular shape. 143. The method of claim 144, wherein
And a first right step of the first planar core has a quadrangular shape. 143. The method of claim 144, wherein
And a first left step of the first planar core is formed in an elliptic shape or a circular shape. 143. The method of claim 144, wherein
And a first right step of the first planar core is formed in an elliptic shape or a circular shape. 143. The method of claim 144, wherein
The first left front step of the first planar core and the second planar core is spaced apart from each other planar transformer is present. 143. The method of claim 144, wherein
And the first left rear step of the first planar core and the second planar core are spaced apart from each other to form a gap. 143. The method of claim 144, wherein
And the first mid-front step of the first planar core and the second planar core are spaced apart from each other. 143. The method of claim 144, wherein
And the first mid-rear stepped portion of the first planar core and the second planar core are spaced apart from each other to form a gap. 143. The method of claim 144, wherein
The first right front step of the first planar core and the second planar core is spaced apart from each other planar transformer is present. 143. The method of claim 144, wherein
And the first right rear step of the first planar core and the second planar core are spaced apart from each other. A first main body formed of a rectangular magnetic body, a first left rear step extending from a rear left side of the first body, a first left front step extending from a front left side of the first main body, and A first left step formed in the center of the first left rear step and the first left front step and the first left rear step formed spaced apart from the first left rear step and extended to the rear center side of the first body; A first mid rear step, spaced apart from the first left front step, and extending from the front center side of the first main front step; the first mid rear step and the first mid front step A first central step formed at a predetermined length and spaced apart from the first left step, and a first right rear step formed to be spaced apart from the first middle rear step and extended to a rear right side of the first body; And a first right front stepped step formed spaced apart from the first middle front step step and extending to a front right side of the first body, and a center of the first right rear step step and the first right front step step. A first planar core including a first right stepped to a predetermined length spaced apart from the central step;
A first lower secondary winding in which a plurality of coils are stacked and disposed between the first left rear step of the first planar core and the first left front step and surrounding the first left step of the first planar core;
A plurality of coils are stacked, disposed spaced apart from the first lower secondary winding, and surrounding the first right step of the first planar core between the first right rear step and the first right front step of the first planar core. A second lower secondary winding disposed;
A coil is formed by winding a plurality, and on the first lower secondary winding and the second lower secondary winding, a first left step of the first planar core, a first central step of the first planar core and the first plane A primary winding disposed surrounding the first right step of the core;
A first upper secondary winding in which a plurality of coils are stacked and disposed on the primary winding and surrounding the first left step of the first planar core;
A second upper secondary winding in which a plurality of coils are stacked and spaced apart from the first upper secondary winding, the second upper secondary winding disposed on the primary winding to surround the first right step of the first planar core; And
A second main body disposed on the first upper secondary winding, the primary winding, and the second upper secondary winding, formed of a rectangular magnetic body, and extending to a rear left side of the second main body; A second left rear step which is disposed opposite to the first left rear step of the planar core; A second left stepped jaw, a second left stepped jaw formed at a center of the second left rear stepped jaw and the second left front stepped to face the first left stepped jaw of the first planar core, and A second middle rear step which is formed to be spaced apart from the second left rear step and extends on the rear center side of the second body and is disposed to face the first right rear step of the first planar core; A second middle front step formed on the front center side of the second main body and disposed to face the first right front step of the first planar core, the second middle rear step and the second middle front step A second central step formed at a predetermined length in the center and disposed to face the first central step of the first planar core; A second right rear step which is disposed opposite the middle rear step, and a second right front step which extends on the front right side of the second body and is disposed opposite the first middle front step of the first planar core; And a second planar core having a predetermined length at the center of the second right rear step and the second right front step and including a second right step disposed opposite to the first right step of the first planar core. include Plane transformer. 158. The method of claim 156 wherein
The first planar core may include the first left rear step, the first left front step, the first left step, the first mid rear step, the first middle front step, the first center step, and the first right step. And a rear step, the first right front step and the first right step are integrally formed in the first body. 158. The method of claim 156 wherein
The second planar core may include the second left rear step, the second left front step, the second left step, the second mid rear step, the second middle front step, the second center step, and the second right step. And a rear step, the second right front step and the second right step are integrally formed in the second body. 158. The method of claim 156 wherein
And a first left stepped portion of the first planar core has a quadrangular shape. 158. The method of claim 156 wherein
And a first right step of the first planar core has a quadrangular shape. 158. The method of claim 156 wherein
And a first left step of the first planar core is formed in an elliptic shape or a circular shape. 158. The method of claim 156 wherein
And a first right step of the first planar core is formed in an elliptic shape or a circular shape. 158. The method of claim 156 wherein
And a second left stepped portion of the second planar core has a quadrangular shape. 158. The method of claim 156 wherein
And a second right step of the second planar core has a quadrangular shape. 158. The method of claim 156 wherein
And a second left step of the second planar core has an elliptical shape or a circular shape. 158. The method of claim 156 wherein
And the second right step of the second planar core has an elliptical shape or a circular shape. 158. The method of claim 156 wherein
And the first left front step of the first planar core and the second left front step of the second planar core are spaced apart from each other. 158. The method of claim 156 wherein
The first left rear step of the first planar core and the second left rear step of the second planar core are spaced apart from each other, the plane transformer. 158. The method of claim 156 wherein
And the first mid-front step of the first planar core and the second mid-front step of the second plane core are spaced apart from each other. 158. The method of claim 156 wherein
And a gap between the first middle rear step of the first planar core and the second middle rear step of the second planar core is spaced apart from each other. 158. The method of claim 156 wherein
And the first right front step of the first planar core and the second right front step of the second planar core are spaced apart from each other. 158. The method of claim 156 wherein
And the first right rear step of the first planar core and the second right rear step of the second planar core are spaced apart from each other.

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