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论述了在闭环反馈控制下,输入环节工作在不连续导电模式(DCM)时,高功率因数校正BOOST?BUCK组合变换器的稳定性,讨论了通过引入开关电容网络扩大这类变换器的稳定范围的方法,实验结果表明了理论分析的正确性.“,”The stability is analyzed for a closed loop single stage power factor correction(PFC) integrated converter with a discontinuous conduction mode(DCM) input part. Obtained is the condition for which the output voltage can be maintained within the desired range by pulse width modulation(PWM).The input voltage range and the load current range are also discussed. A PFC DCM boost buck converter is investigated with results verified by experiments.