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Analysis of abnormal phenomena caused by synchronous rectifiers ina 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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摘要

Problems of synchronous rectification in a parallel-module DC-DCnpower converter system are described. These include excessive powerndissipation due to the bidirectional current flow capability of MOSFETsnand abnormal oscillation due to the cross coupling of the MOSFETs usednas synchronous rectifiers. The abnormal oscillation, which causesnexcessive voltage stress, is analyzed; the results of which arensubsequently confirmed by experiment. Methods for solving the abnormalnoscillation problem are discussed
机译:描述了并行模块DC-DCnpower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率损耗以及由于同步整流器所使用的MOSFET的交叉耦合而引起的异常振荡。分析了引起不必要的电压应力的异常振荡;其结果随后被实验证实。讨论了解决异常振动问题的方法

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