高频开关电源模块均流系统的研究

High-Frequency Switching Power Supply Module Current System

本文重点研究多个高频开关电源模块的并联运行需要解决的一个关键问题,就是负载电流的均分问题。即如果在并联系统中没有进行均流电路的硬件设计或软件设计,则可能出现其中某个或某些电源模块承担比较大的负载电流,运行在极限状态,而有些模块处于轻载运行,这将导致分担电流多的模块热应力大,致使系统的可靠性降低。详细讨论了均流的几种控制方法,介绍了最大电流自动均流的均流控制电路仿真结果。

This article focuses on a number of parallel operation of the power modules need to address a key issue is that the current load-sharing problems： that is, if there is no parallel system for both hardware circuit design and software design, which may be a Or some of the power module to bear more of the load current, operating at the limit, and some modules at a light load operation, which will lead to a share of the current multi-module heat stress, resulting in reduced reliability of the system. Here are details on some of the flow control methods and analysis of the test.