CN210469108U - High-integration isolation power supply structure - Google Patents

Abstract

The utility model discloses a high integration level isolation power supply structure, isolation power supply structure includes: the circuit board, the circuit board openly is equipped with first recess, and the circuit board back is equipped with the second recess, and the degree of depth of second recess is greater than the degree of depth of first recess, installs control chip and the peripheral circuit of isolation power in the first recess, installs isolation transformer and isolation output rectification filter circuit in the second recess, and second recess is equipped with the pillar all around, and the circuit board passes through the via hole and is connected with control chip and peripheral circuit, and control chip, peripheral circuit and isolation output rectification filter circuit embedment are in the epoxy layer. The utility model provides an isolation power supply structure has improved the space utilization of circuit board in the isolation power supply, has reduced the whole volume of isolation power supply.

Description

High-integration isolation power supply structure

Technical Field

The utility model relates to a power equipment technical field specifically, relates to a high integration isolation power supply structure.

Background

In the existing low-power supply, part of the requirements of input and output need to realize isolated output, and when the isolated power supply is realized, a control chip, a transformer and a peripheral circuit usually occupy most of the area of a circuit board, and the utilization rate of the circuit board becomes more and more important on the circuit board with higher and higher device density.

The inventor researches and discovers that related devices on the circuit board of the isolated power supply in the prior art are all arranged on the upper layer of the circuit board, which occupies most area of the circuit board and causes the whole volume of the isolated power supply to be larger.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high integration isolation power supply structure, the purpose improves the space utilization who keeps apart circuit board in the power, reduces the whole volume of keeping apart the power.

In order to realize the above-mentioned utility model purpose, the utility model provides a high integration isolation power supply structure, isolation power supply structure includes:

the circuit board, the circuit board openly is equipped with first recess, and the circuit board back is equipped with the second recess, and the degree of depth of second recess is greater than the degree of depth of first recess, installs control chip and the peripheral circuit of isolation power in the first recess, installs isolation transformer and isolation output rectification filter circuit in the second recess, and second recess is equipped with the pillar all around, and the circuit board passes through the via hole and is connected with control chip and peripheral circuit, and control chip, peripheral circuit and isolation output rectification filter circuit embedment are in the epoxy layer.

Wherein, the utility model discloses a principle does: two grooves are formed in the front side and the back side of the circuit board respectively, the two grooves are deep and shallow, the device with relatively large thickness in the isolation power supply is installed in the deep second groove, the device with relatively small thickness in the isolation power supply is installed in the first groove, the space of the circuit board is fully utilized, the space utilization rate of the circuit board in the isolation power supply is improved, and the whole volume of the isolation power supply is reduced.

Wherein, the utility model discloses a to the structure of circuit board in the isolation power and keep apart the adjustment of relevant device mounted position in the power, the circuit connection relation between the relevant device does not have corresponding change, can adopt corresponding relevant connected mode to realize can.

Further, control chip passes through peripheral circuit and builds FLY-BUCK circuit, realizes that the input side steady voltage is pressed and keep apart the output of side steady voltage, wherein, the utility model discloses a to the improvement of power structure, circuit and corresponding circuit connection mode in the power all adopt current circuit and corresponding connected mode, and it is no longer repeated to this.

Furthermore, 4 pillars are uniformly arranged around the second groove.

Furthermore, one end of the support, which is far away from the circuit board, is coated with copper, and a window is formed in the copper layer.

The utility model provides a one or more technical scheme has following technological effect or advantage at least:

the utility model provides an isolation power supply structure has improved the space utilization of circuit board in the isolation power supply, has reduced the whole volume of isolation power supply.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

fig. 1 is a schematic cross-sectional view of a PCB of the present invention;

FIG. 2 is a schematic side view of the PCB of the present invention;

FIG. 3 is a schematic bottom view of the isolated power supply structure of the present invention;

FIG. 4 is a schematic top view of the isolated power supply structure of the present invention;

fig. 5 is a bottom view of the package of the present invention;

fig. 6 is a side view of the package of the present invention;

fig. 7 is a side view of the package of the present invention;

the circuit board comprises a base, a first groove, a second groove, a pillar, a 4-coupling transformer, a rectifier diode, a control chip, a peripheral device and a circuit board, wherein the base comprises 1-the first groove, 2-the second groove, 3-the pillar, 4-the coupling transformer, 5-the rectifier diode, 6-the control chip, 7-the peripheral device of the control chip and 8-.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1-7, an embodiment of the present invention provides a high-integration isolation power supply structure, including:

the circuit board 8, the circuit board openly is equipped with first recess 1, the circuit board back is equipped with second recess 2, the degree of depth of second recess is greater than the degree of depth of first recess, control chip and the peripheral circuit of power are kept apart in the installation of first recess, install isolation transformer and keep apart output rectifier filter circuit in the second recess, second recess is equipped with pillar 3 all around, the circuit board passes through the via hole and is connected with control chip and peripheral circuit, control chip, peripheral circuit and keep apart output rectifier filter circuit embedment in the epoxy layer. The utility model discloses can make whole isolation power supply cloth board area reduce more than two-thirds.

For solving the small area circuit board and realizing keeping apart auxiliary power source, the utility model provides a high integration level separates power supply structure, utilize the blind technology of burying in the circuit board course of working, mill partial layer with the positive and negative on the circuit board, the paster of shallower one side (being the face at first recess place) as control chip and peripheral circuit, and process into four pillars in darker one side (being the face at second recess place), copper is coated on pillar ground, and open window with copper coating and handle, PCB passes through the via hole and realizes being connected with control chip and peripheral circuit, miniature isolation transformer is placed to the pillar intermediate position and output rectifying and filtering circuit is kept apart in part. Finally, the control chip, the peripheral circuit, the inductor and the isolation output rectifying and filtering circuit are encapsulated by epoxy resin, and finally, only the copper-coated windowing position at the top end of the strut is reserved as a finished product for welding.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (3)

1. A highly integrated isolated power supply structure, comprising:

the circuit board, the circuit board openly is equipped with first recess, and the circuit board back is equipped with the second recess, and the degree of depth of second recess is greater than the degree of depth of first recess, installs control chip and the peripheral circuit of isolation power in the first recess, installs isolation transformer and isolation output rectification filter circuit in the second recess, and second recess is equipped with the pillar all around, and the circuit board passes through the via hole and is connected with control chip and peripheral circuit, and control chip, peripheral circuit and isolation output rectification filter circuit embedment are in the epoxy layer.

2. The highly integrated isolated power supply structure of claim 1, wherein there are 4 pillars uniformly disposed around the second recess.

3. The structure of claim 1, wherein the end of the pillar away from the circuit board is copper-clad, and the copper layer has a window.

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