CN208158438U

CN208158438U - A kind of self-excitation frequency conversion type soft switching power module

Info

Publication number: CN208158438U
Application number: CN201820785304.7U
Authority: CN
Inventors: 孙志鹏
Original assignee: Aerospace Changfeng Chaoyang Power Supply Co Ltd
Current assignee: Aerospace Changfeng Chaoyang Power Supply Co Ltd
Priority date: 2018-05-24
Filing date: 2018-05-24
Publication date: 2018-11-27
Anticipated expiration: 2028-05-24

Abstract

The utility model discloses a kind of self-excitation frequency conversion type soft switching power modules, including outer housing and pin；Isolation design has transformer respectively for the inside of the outer housing, outputting inductance circuit, auxiliary winding circuit, switching transistor and output diode, and transformer, it is sequentially connected between outputting inductance circuit, auxiliary winding circuit, switching transistor and output diode by conducting wire；The pin is at least provided with 4 groups, and the incoming end of pin and output diode are electrically connected；The pin runs through the bottom plate of outer housing far from incoming end and extends to the outside of outer housing, and the utility model realizes DC300V and become DC5V output under the smallest volume, the reduction of no-load power consumption, with least component, reliable and stable output is realized, improve the reliability of power supply；The module meets the needs of various DC loads；The device of the module can satisfy wider temperature range simultaneously, meet the use scope of military standard.

Description

A kind of self-excitation frequency conversion type soft switching power module

Technical field

The utility model relates to switch power module technical field, specially a kind of self-excitation frequency conversion type soft switching power mould Block.

Background technique

Under normal conditions, module main control chip pulse width modulator is purchased in foreign countries, and the design does not use the pulsewidth of import Chip is modulated, wartime is not blocked by foreign technology and coerced.The power module application for inputting DC200-400V power 5W-10W is very wide, But most of completed by the wiring board form of power manufacture of discrete device, or by high power module small-power using finally reaching To the output of input DC200-400V power 5W.The power supply of both forms all has that volume is big, and low efficiency, reliability is low, at This higher problem.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of self-excitation frequency conversion type soft switching power module, realizes DC300V becomes DC5V output, and the reduction of no-load power consumption with least component is realized reliable and stable output, improved electricity The reliability in source；The module meets the needs of various DC loads；The device of the module can satisfy wider temperature model simultaneously It encloses, meets the use scope of military standard.

In order to achieve the above object, the utility model is achieved by the following technical programs：A kind of self-excitation frequency conversion type is soft to be opened Powered-down source module, including outer housing and pin；Isolation design has transformer, outputting inductance electricity respectively for the inside of the outer housing Road, auxiliary winding circuit, switching transistor and output diode, and transformer, outputting inductance circuit, are opened auxiliary winding circuit It closes and is sequentially connected between triode and output diode by conducting wire；The pin is at least provided with 4 groups, and the incoming end of pin It is electrically connected with output diode；The pin runs through the bottom plate of outer housing far from incoming end and extends to the outside of outer housing.

As the further preferred technical solution of the utility model, the length × width × height of the outer housing is respectively 25.4mm ×25.4mm×12.7mm。

As the further preferred technical solution of the utility model, the outer housing designs for integral type, and outer housing Periphery offers several heat release holes.

As the further preferred technical solution of the utility model, the output voltage of the output diode is DC voltage 5V。

As the further preferred technical solution of the utility model, the switching transistor is made of high pressure resistant material.

Beneficial effect

The utility model has following advantages：

1, for small size DC200-400V input design, make self-excitation frequency conversion type soft switch circuit master power switch pipe, reach To most reasonable duty ratio, module is made to reach highest efficiency；

2, for DC200-400V input design, use is high pressure resistant, small size triode, to meet high input voltage amplitude Requirement.Realize DC200-400V high input voltage and the small requirement of outer dimension；

3, the raising of module efficiency reduces the calorific value of module, make module volume reduce, volume be 25.4mm × 25.4mm × 12.7mm meets standardization, trend toward miniaturization；

4, the wider device of use temperature range can satisfy wider temperature range, and meet military standard uses model It encloses.

Detailed description of the invention

Fig. 1 is the main view of the utility model；

Fig. 2 is utility model works basic circuit diagram；

In figure：1- outer housing, 2- pin.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2,：A kind of self-excitation frequency conversion type soft switching power module, Including outer housing 1 and pin 2；Isolation design has a transformer respectively for the inside of the outer housing 1, outputting inductance circuit, auxiliary around Group circuit, switching transistor and output diode, and transformer, outputting inductance circuit, auxiliary winding circuit, switching transistor and It is sequentially connected between output diode by conducting wire；The pin 2 is at least provided with 4 groups, and the incoming end of pin 2 and output two Pole pipe is electrically connected；The pin 2 runs through the bottom plate of outer housing 1 far from incoming end and extends to the outside of outer housing 1.

Further, the length × width × height of the outer housing 1 is respectively 25.4mm × 25.4mm × 12.7mm, is highly free of and draws The height of foot 2 keeps installing and using for module more convenient using the structure type that copper shell silicon rubber encapsulates, and input voltage breaches Previous DC36-72V low-voltage direct input below, makes power module input voltage reach DC200-400V, the effect of module Rate reaches 88% or more.The increasing of module input voltage, the reduction of volume, the increase of reliability, to the volume of entire electrical equipment Reduction have very important effect, greatly reduce cost, minimize more electrical equipments, be easy to industrial life It produces.

Further, the outer housing 1 designs for integral type, and the periphery of outer housing 1 offers several heat release holes.

Further, the output voltage of the output diode is DC voltage 5V, can be provided for various loads stable Power output.

Further, the switching transistor is made of high pressure resistant material, and the input voltage of module is made to improve and can guarantee The volume of module is relatively small, is able to satisfy the power of small size output 5W.The whole component specification quantity of module is few, Neng Gouti The reliability of high module；The wider device of use temperature range, can satisfy wider temperature range, meet the ring of military standard Border temperature use scope；Newly-designed transformer T1 is selected under the combination of theoretical calculation and experiment according to input and output electric current Primary and secondary enameled wire, makes power supply in the fully loaded output of 5V5W, and input efficiency in the case where DC200-400V reaches highest.

For DC200-400V input voltage, to primary number of secondary turns ratio, under the combination of theoretical calculation and actual experiment It is adjusted, input voltage switch duty ratio is made to reach reasonable value, solve the problems, such as to improve efficiency, reduce power consumption.

For the input voltage of DC200-400V, the input switch triode of high pressure resistant small size is chosen, to meet input DC200-400V high input voltage and the small requirement of outer dimension are realized in the requirement of high pressure amplitude.

The reduction of power module transformer calorific value and the reduction of component specification quantity so that the raising of whole efficiency and The raising of reliability.Along with, parameter more preferably switching transistor, outputting inductance, low-resistance rectifier diode smaller using volume Equal devices, solve the problems, such as low no-load loss.

Using self-excitation frequency conversion type Sofe Switch operating mode, make main switch from excessive voltage stress, also can avoid becoming The magnetic energy feedback transmission of depressor primary side is conducive to the Electro Magnetic Compatibility and reliability that improve module to input power.

Since the power of module is smaller, whole efficiency is higher, using the structure type of copper shell silica gel packaging, ensure that one Change heat dissipation and higher insulating properties.

Finally it should be noted that：Obviously, examples detailed above is only intended to clearly illustrate this technology example, and is not Restriction to embodiment.For those of ordinary skill in the art, it can also make on the basis of the above description Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And it is thus extended Obvious changes or variations out still in the protection scope of this technology among.

Characteristic described in the domestic and international representative products of table 1

Manufacturer	Series	Modular power	Use power	Efficiency	Volume（mm）
						Japanese TDK	PH50A280-5	50W	5W	67%	58.3×37.2×12.7
Space power	4NIC-5P300S05	5W	5W	88%	25.4×25.4×12.7

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of self-excitation frequency conversion type soft switching power module, including outer housing（1）And pin（2）；It is characterized in that, the shell Body（1）Isolation design has a transformer respectively for inside, outputting inductance circuit, auxiliary winding circuit, switching transistor and output two Pole pipe, and transformer, between outputting inductance circuit, auxiliary winding circuit, switching transistor and output diode by conducting wire according to Secondary connection；The pin（2）At least provided with 4 groups, and pin（2）Incoming end and output diode be electrically connected；It is described to draw Foot（2）Run through outer housing far from incoming end（1）Bottom plate and extend to outer housing（1）Outside.

2. a kind of self-excitation frequency conversion type soft switching power module according to claim 1, which is characterized in that the outer housing （1）Length × width × height be respectively 25.4mm × 25.4mm × 12.7mm.

3. a kind of self-excitation frequency conversion type soft switching power module according to claim 1, which is characterized in that the outer housing （1）It is designed for integral type, and outer housing（1）Periphery offer several heat release holes.

4. a kind of self-excitation frequency conversion type soft switching power module according to claim 1, which is characterized in that two poles of the output The output voltage of pipe is DC voltage 5V.

5. a kind of self-excitation frequency conversion type soft switching power module according to claim 1, which is characterized in that three pole of switch Pipe is made of high pressure resistant material.