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Analysis of abnormal phenomena caused by synchronous rectifiers in a paralleled converter system

机译:并联变换器系统中同步整流器引起的异常现象分析

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Problems of synchronous rectification in a parallel-module DC-DC converter system are described. These include excessive power dissipation due to the bidirectional current flow capability of MOSFETs and abnormal oscillation due to the cross coupling of the MOSFETs used as synchronous rectifiers. The abnormal oscillation, which causes excessive voltage stress, is analyzed; the results of which are subsequently confirmed by experiment.
机译:描述了并行模块DC-DC转换器系统中的同步整流问题。其中包括由于MOSFET的双向电流流动能力而导致的过多功耗,以及由于用作同步整流器的MOSFET的交叉耦合而引起的异常振荡。分析导致电压应力过大的异常振荡;其结果随后通过实验得到证实。

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