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1. (WO2018103221) APPARATUS AND METHOD FOR SWITCHING POWER SUPPLY CIRCUIT

Pub. No.:    WO/2018/103221    International Application No.:    PCT/CN2017/075770
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: H02J 7/00
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: WANG, Xun
王勋
WANG, Long
王龙
Title: APPARATUS AND METHOD FOR SWITCHING POWER SUPPLY CIRCUIT
Abstract:
Provided are an apparatus and method for switching a power supply circuit. The apparatus comprises a first power source (110), a second power source (120), a power supply logic selector (130) and a switch (140), wherein the power supply logic selector is connected to the first power source and the second power source and is used for selecting the first power source and/or the second power source to supply power for a power consumption system; the switch is connected to the second power source and the power consumption system; and when an output voltage of the first power source is less than or equal to a first voltage threshold, the second power source supplies power to the power consumption system by means of the switch. The apparatus can realize fast and smooth switching from a first power source to a second power source, and can realize normal operation of a system within a scheduled time.