公开(公告)号：US20130200869A1

公开(公告)日：2013-08-08

申请号：US13751710

申请日：2013-01-28

Applicant: SONY COMPUTER ENTERTAINMENT INC.

Inventor： Kazuki SASAO ,  Kazuaki MITSUI

IPC: G05F1/46

CPC classification number: G05F1/46 ,  H02M3/156 ,  H02M2001/0009

Abstract: Based upon a detection voltage VL that develops between ISEN+ and ISEN− terminals, a current detection circuit detects a coil current IL that flows through an inductor. A measurement circuit is connected to an inductor, and measures an inductance value L and a DC resistance value RDC of the inductor in a calibration operation before normal operation of a DC/DC converter. Based upon the inductance value L and the DC resistance value RDC thus measured, the current detection circuit detects the coil current IL using the detection voltage VL.

Abstract translation: 基于在ISEN +和ISEN-端子之间产生的检测电压VL，电流检测电路检测流过电感器的线圈电流IL。 测量电路连接到电感器，并且在DC / DC转换器正常工作之前的校准操作中测量电感器的电感值L和直流电阻值RDC。 基于如此测量的电感值L和DC电阻值RDC，电流检测电路使用检测电压VL检测线圈电流IL。