Circuit and method for controlling DC-DC converter

申请公布号：US7663345(B2)

申请号：US20060512318

申请日期：2006.08.30

申请公布日期：2010.02.16

申请人：

FUJITSU MICROELECTRONICS LIMITED

发明人：OZAWA HIDEKIYO;MATSUMOTO TAKASHI;YOSHINO TAKAHIRO

分类号：H02J7/04;H02J7/16

主分类号：H02J7/04

摘要：A DC-DC converter for generating a stable output voltage and being applicable to a transient load fluctuation. The DC-DC converter detects an input current, and compares the input current with a rated current of an external power supply. The DC-DC converter controls a positive charging current that is supplied to a secondary battery in accordance with a consumption current of a load so that the input current does not exceed the rated current. The DC-DC converter further controls a negative charging current that is supplied from the secondary battery to the load when the load requires an input current exceeding the rated current.

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