公开(公告)号：US20160285381A1

公开(公告)日：2016-09-29

申请号：US15072504

申请日：2016-03-17

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： YEN-SHIN LAI ,  PANE-YOU LIU

IPC: H02M5/458 ,  G01R31/42

CPC classification number: H02M5/458 ,  G01R31/42 ,  H02M1/32 ,  H02M7/062

Abstract: A detection circuit for an AC-to-AC power converter includes a voltage divider circuit that has three AC input terminal coupled respectively to three input ends of a power converter which are to receive respectively three AC input power signals with different phases, and that receives a predetermined first reference voltage. Upon receiving one AC input power signal, the voltage divider circuit outputs a divided voltage, which during an active period of the one AC input power signal, is greater than a predetermined second reference voltage, to a comparator, which also receives the predetermined second reference voltage, such that the comparator outputs a detection signal that is in an active state when the one AC input power signal is.

Abstract translation: AC-AC电力转换器的检测电路包括分压电路，其具有三个AC输入端，分别耦合到功率转换器的三个输入端，分别接收具有不同相位的三个AC输入功率信号，并且接收 预定的第一参考电压。 在接收到一个AC输入功率信号时，分压器电路将一个AC输入功率信号的有效时段内的分压值大于预定的第二参考电压输出到比较器，该比较器还接收预定的第二参考值 电压，使得比较器输出当一个AC输入功率信号时处于活动状态的检测信号。