Анализ мощности рассеивания транзисторным ключом в последовательных импульсном и квазирезонансном преобразователях

Abstract

The results of calculating losses in electronic switch in sequential type switched-mode and zero current switch quasi-resonant power converters, which operate with stable voltage, are shown. Methodic of losses calculation in electronic switch with considering its parasitical parameters is proposed. Equivalent simplified circuits of converters during all phases of operating are composed. In appliance with those circuits dynamic and static losses in electronic switch are calculated. This analyzing had implemented in wide range operating frequencies of converters. The considerable efficiency of energy performance of sequential quasi-resonant compared to pulse converters are shown