Title:
POWER SUPPLY CIRCUIT, CONTROL METHOD, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/249005
Kind Code:
A1
Abstract:
Disclosed in the present application are a power supply circuit, a control method, and a system, used for reducing power consumption by LDOs. The power supply circuit comprises a control circuit, a switching power supply, and multiple LDOs. After obtaining the output voltage of each LDO output end, the control circuit of the power supply circuit adjusts, according to the output voltage of each LDO, voltages of output ends of the switching power supply connected to input ends of the LDOs in a one-to-one correspondence so that the output voltage of each LDO is equal to the rated output voltage. The present application can adjust, according to the output voltage of each LDO, the voltages of the output ends of the switching power supply connected to the input ends of respective LDOs in a one-to-one correspondence so as to cause the output voltage of each LDO to be equal to the rated output voltage, such that the voltage difference between the input end and the output end of each LDO is adjusted to be close to dropout, thereby improving the utilization rate of power consumption by the LDOs.
Inventors:
CHEN JIANHUA (CN)
ZHOU MENGTE (CN)
FAN MAOBIN (CN)
XIA XIAOFEI (CN)
WANG LIQIANG (CN)
ZHOU MENGTE (CN)
FAN MAOBIN (CN)
XIA XIAOFEI (CN)
WANG LIQIANG (CN)
Application Number:
PCT/CN2021/086708
Publication Date:
December 16, 2021
Filing Date:
April 12, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/00; H02M3/156; H02M3/158
Foreign References:
| CN108512282A | 2018-09-07 | |||
| KR20120056456A | 2012-06-04 | |||
| US20150263615A1 | 2015-09-17 | |||
| CN101212173A | 2008-07-02 | |||
| CN108471234A | 2018-08-31 | |||
| US20190123648A1 | 2019-04-25 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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