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Title:
SWITCHING POWER SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/196784
Kind Code:
A1
Abstract:
A switching power supply circuit, comprising: a first loop formed by charging a first capacitor (C1) with a first input rectifying circuit (D1); a second loop formed by charging a second capacitor (C2) with a second input rectifying circuit; a third loop consisting of a first inductor (L1), a second capacitor, and a first switching element (Q1) and formed by charging a first inductor with the second capacitor; and a fourth loop consisting of the a first inductor, the second capacitor, the first capacitor, and a first output amplifying circuit (D4) and used for charging the first capacitor by means of a first output amplifying circuit after a voltage on the first inductor is overlapped with a voltage on the second capacitor. The switching power supply circuit has the advantages of high efficiency, high reliability, low EMI noise, and strong anti-interference and surge resistance, etc.

Inventors:
LI, Renhong (Building C, No.888 West Huanhu Er Road, New Nanhui Town, Pudong District, Shanghai 5, 200135, CN)
SHEN, Zhuo (Building C, No.888 West Huanhu Er Road, New Nanhui Town, Pudong District, Shanghai 5, 200135, CN)
Application Number:
CN2019/081715
Publication Date:
October 17, 2019
Filing Date:
April 08, 2019
Export Citation:
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Assignee:
SHANGHAI TUITUO TECHNOLOGY CO., LTD (Building C, No.888 West Huanhu Er Road, New Nanhui Town, Pudong District, Shanghai 5, 200135, CN)
International Classes:
H02M1/42; H02M7/217
Foreign References:
CN101394091A2009-03-25
CN108448888A2018-08-24
CN108494274A2018-09-04
CN1388633A2003-01-01
CN201091060Y2008-07-23
JPH08126322A1996-05-17
Attorney, Agent or Firm:
SEVEN SEAS IP AGENCY SHANGHAI (YANG, HuiUnit 02B, 43rd Floor, Hong Kong New World Tower, 300 Huaihai Road Central, Huangpu District, Shanghai 1, 200021, CN)
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