公开(公告)号：US09395734B2

公开(公告)日：2016-07-19

申请号：US14669704

申请日：2015-03-26

Applicant: Richtek Technology Corporation

Inventor： Hung-Yu Cheng ,  Tzu-Huan Chiu ,  Shuo-Wen Chang

IPC: H02M3/156 ,  G05F1/625

CPC classification number: G05F1/625 ,  H02M3/156

Abstract: A control circuit of a power converter includes: an error detection circuit, configured to operably generate an error signal according to a reference signal and a feedback signal when coupling with an external feedback node of an external feedback circuit; an output signal detecting circuit, positioned inside the control circuit, configured to operably receive and detect an output signal of the power converter to generate a representative signal; an on time deciding circuit, coupled with the output signal detecting circuit, configured to operably generate an on time signal according to the representative signal; and a control signal generating circuit, coupled with the error detection circuit and the on time deciding circuit, configured to operably control on time of one or more power switches of the power converter according to the error signal and the on time signal.

Abstract translation: 功率转换器的控制电路包括：误差检测电路，被配置为当与外部反馈电路的外部反馈节点耦合时，根据参考信号和反馈信号可操作地产生误差信号; 位于所述控制电路内部的输出信号检测电路被配置为可操作地接收和检测所述功率转换器的输出信号以产生代表信号; 与输出信号检测电路耦合的开启时间确定电路被配置为根据代表信号可操作地产生导通时间信号; 以及控制信号发生电路，与误差检测电路和导通时间确定电路相配合，被配置为根据误差信号和导通时间信号可操作地控制功率转换器的一个或多个功率开关的时间。