Large power parallel double-switch forward DC/DC power supply module

Abstract

The invention discloses a large power parallel double-switch forward DC / DC power supply module comprising switch tubes Q1, Q2, transformers T1, T2, a PWM control circuit, an input filter capacitor C1, an output filter capacitor C2, a rectifier circuit, a feedback and overvoltage protection circuit, and an overcurrent protection circuit; the power supply module employs an integrated design; a DC / DC converter power circuit employs an interlace parallel double-switch forward circuit topology form; the circuit portion designs two single-end switch forward circuit topology forms to be integrated and paralleled so as to realize power expansion, thus solving the problems that a domestic same-size product uses two power conversion magnetic cores, and an output power cannot reach a foreign same-kind product, so four power conversion magnetic cores can satisfy DC / DC power supply module power conversion requirements; the large power parallel double-switch forward DC / DC power supply module is small in size, high in efficiency and reliability, good in heat radiation performance, and wide in application scope.

Description

technical field [0001] The invention relates to a power supply module, in particular to a high-power parallel double forward DC / DC power supply module. Background technique [0002] At present, standard isolated DC / DC power modules are mainly divided into four types: 1 / 8 brick, 1 / 4 brick, 1 / 2 brick and full brick, among which full brick is the isolated DC / DC power module with the largest single output power . American VICOR Company, Japanese LAMBDA Company and American SynQor are professional manufacturers of standard isolated DC / DC power modules and other products. The temperature range and other advantages are widely used in the fields of communication, industrial control, medical equipment and military industry. [0003] In recent years, the United States and Japan have implemented an "embargo" policy on these products used in sensitive areas, and the current international situation has changed rapidly. It is impossible for my country's high-end military DC / DC power mod...

AI Technical Summary

Problems solved by technology

[0006] This circuit topology is mainly composed of a power conversion transformer and a filter energy storage inductor; the forward active clamp and forward flyback active clamp power supply topologies are also extended and developed based on the forward circuit topology, and are also composed of a power conversion The transformer is composed of a filter energy storage inductor. The products developed by it are limited by the domestic power conversion transformer, power conversion inductor magnetic material and volume, and cannot realize the power replacement of similar foreign standard products.

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