Title:
CURRENT LIMIT CONTROLLABLE SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2021/004246
Kind Code:
A1
Abstract:
A switching power supply. The output end of an energy supply circuit (01) is connected with the input end of a current detection circuit (02), the current detection circuit (02) being used for detecting the output current of the energy supply circuit (01). The output end of the current detection circuit (02) is connected with the input end of a logic control circuit (03), the logic control circuit (03) being connected with the gate of a MOS tube (04) and used for receiving the output signal of the current detection circuit (02), the MOS tube (04) being controlled to be switched on or off according to the output signal of the current detection circuit (02). The source of the MOS tube (04) is connected to ground, and the drain of the MOS tube (04) is connected with the output end of the energy supply circuit (01). The circuit of the switching power supply has a simple design.The current detection circuit (02) directly detects the inductive current instead of using a traditional resistance detecting method, which can reduce the system power loss and thus has a broader detection range. The MOS tube (04) is controlled to be switched on or off by means of the logic control circuit (03), thereby providing the switching power supply with constant current and voltage and ensuring a more stable working status of the switching power supply.
Inventors:
FENG YUMING (CN)
ZHANG LIANG (CN)
WANG CONG (CN)
ZHANG YONGGUANG (CN)
YIN HUIPING (CN)
XIE YUHUA (CN)
ZHANG LIANG (CN)
WANG CONG (CN)
ZHANG YONGGUANG (CN)
YIN HUIPING (CN)
XIE YUHUA (CN)
Application Number:
PCT/CN2020/096628
Publication Date:
January 14, 2021
Filing Date:
June 17, 2020
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
H02M3/156
Foreign References:
| CN110417258A | 2019-11-05 | |||
| CN210201713U | 2020-03-27 | |||
| US20060006916A1 | 2006-01-12 | |||
| CN102545571A | 2012-07-04 | |||
| US10135357B1 | 2018-11-20 | |||
| US20170085182A1 | 2017-03-23 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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