公开(公告)号：US09966857B2

公开(公告)日：2018-05-08

申请号：US15192187

申请日：2016-06-24

Applicant: Richtek Technology Corporation

Inventor： Jiun-Hung Pan ,  Chien-Fu Tang ,  Jyun-Che Ho ,  Isaac Y. Chen ,  Yu-Chang Chen ,  Jung-Pei Cheng

IPC: H02M3/156 ,  H02M3/335 ,  H02M7/217 ,  H02M1/08 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M1/08 ,  H02M3/156 ,  H02M3/157 ,  H02M3/33515 ,  H02M3/33523 ,  H02M7/217 ,  H02M2001/0009

Abstract: An AC-to-DC power converter with a BJT as a power switch can set a base current of the BJT by a current setting resistor which is in the outside of a control integrated circuit. Since an output current and a recovery current of the BJT are injected into a sensing resistor, the AC-to-DC power converter can correctly detect an inductor current thereof from the sensing resistor.