Title:
SOFT START CIRCUIT, CONTROL METHOD THEREFOR, AND POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/082667
Kind Code:
A1
Abstract:
Provided are a soft start circuit (10), a control method therefor, and a power supply device (100). The soft start circuit (10) comprises a controller (14), a switch unit (11), a freewheeling unit (12), an energy storage unit (13), and an energy release unit (15). The switch unit (11) is coupled between a first end of a power supply module (20) and the energy release unit (15), the energy release unit (15) is coupled to a second end of the energy storage unit (13), a first end of the freewheeling unit (12) is coupled to a second end of the power supply module (20) and a first end of the energy storage unit (13), and a second end of the freewheeling unit (12) is coupled to a node between the switch unit (11) and the energy release unit (15). In a first time period, the controller (14) is used to control the switch unit (11) to connect, so that the power supply module (20) charges the energy storage unit (13) via the energy release unit (15); in a second time period, the controller (14) is used to control the switch unit (11) to disconnect, so that the energy release unit (15) discharges the energy storage unit (13) via the freewheeling unit (12), the first period of time and the second period of time being a working cycle. The soft start circuit (10), the control method therefor, and the power supply device (100) provide soft start functionality, decrease the amount of space occupied, and reduce costs.
Inventors:
WU YUKUN (CN)
HU PEIQING (CN)
ZHANG SHANCHUN (CN)
HU PEIQING (CN)
ZHANG SHANCHUN (CN)
Application Number:
PCT/CN2022/103453
Publication Date:
May 19, 2023
Filing Date:
July 01, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M1/36; H02M1/32
Foreign References:
| CN206559229U | 2017-10-13 | |||
| CN103713255A | 2014-04-09 | |||
| CN114221534A | 2022-03-22 | |||
| CN207530702U | 2018-06-22 | |||
| US20160352322A1 | 2016-12-01 |
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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