公开(公告)号：US08502515B1

公开(公告)日：2013-08-06

申请号：US13777869

申请日：2013-02-26

Applicant: Richtek Technology Corporation

Inventor： Yi-Cheng Wan ,  Jian-Rong Huang ,  Hung-Chun Peng

IPC: G05F1/40

CPC classification number: H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2003/1586

Abstract: A multiphase DC-DC converting circuit for providing power to a load is disclosed, having power stage circuits, channel current converting circuits, current detecting circuits, a transconductance amplifier circuit, a comparator circuit, and a channel current balance circuit. The current detecting circuits detect current signals of current channels, and the transconductance amplifier circuit and the comparator circuit are coupled with the current detecting circuits to receive the voltage difference across a resistor, and to generate a total current detecting signal provided to the load. The channel current converting circuit is coupled with the current detecting circuits to generate channel current detecting signals. The channel current balance circuit is coupled with the comparator circuit, the transconductance amplifier circuit and the channel current converting circuit to balance the current signals of the current channels.

Abstract translation: 公开了一种用于向负载提供电力的多相DC-DC转换电路，具有功率级电路，沟道电流转换电路，电流检测电路，跨导放大器电路，比较器电路和沟道电流平衡电路。 电流检测电路检测电流通道的电流信号，并且跨导放大器电路和比较器电路与电流检测电路耦合以接收电阻器两端的电压差，并产生提供给负载的总电流检测信号。 通道电流转换电路与电流检测电路耦合以产生通道电流检测信号。 通道电流平衡电路与比较器电路，跨导放大器电路和沟道电流转换电路耦合，以平衡电流通道的电流信号。