Active-clamping positive and negative power module having redundancy function and control method

Abstract

The invention relates to an active-clamping positive and negative power module having a redundancy function and a control method. The active-clamping positive and negative power module comprises a main circuit and a driving circuit, wherein a transformer primary circuit of the main circuit is an active-clamping circuit and has the redundancy function on the damaged main power MOS tube under an abnormal state of an external input voltage, a current of a transformer secondary winding in a transformer secondary circuit passes through a filtering wave inductor, so that the current of the transformer secondary winding changes, and a primary excitation current changes. Therefore, the active-clamping positive and negative power module having the redundancy function has higher reliability and greater vitality, the design of two power modules can be substituted in certain emergency occasions, and the active-clamping positive and negative power module has higher economic practicability and smaller volume.

Description

technical field [0001] The invention relates to the field of power supply modules, in particular to an active clamp forward and flyback power supply module with redundant functions and a control method. Background technique [0002] In places where the requirements for power supply are relatively high, such as national defense and military industries, two sets of identical high-power-density power module conversion circuits are often used to run in parallel at the output end to improve reliability. This not only increases the use cost of the power module, but also The volume will also increase exponentially, which does not meet the power supply target of today's miniaturized power supply. The analysis and statistics of the damage probability of the internal components of the power module are mainly concentrated on the MOS tube, and the magnetic components occupying most of the volume inside the power supply are relatively difficult to damage, so combined with the current use...

AI Technical Summary

Problems solved by technology

[0002] In places where the requirements for power supply are relatively high, such as national defense and military industries, two sets of identical high-power-density power module conversion circuits are often used to run in parallel at the output end to improve reliability. This not only increases the use cost of the power module, but also The size will also increase exponentially, which does not meet the power supply target of today's miniaturized power supply

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