Title:
SWITCH CONVERSION CIRCUIT AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/273002
Kind Code:
A1
Abstract:
A switch conversion circuit, comprising: a power source module (21), which supplies power to a switch conversion module (12) and an IC controller (13); the switch conversion module (12), which is of a flyback-type asymmetric half-bridge structure, and at least comprises a first switch tube (CL), a second switch tube (CH), a first capacitor (Cr) and a transformer (T), the first switch tube (CL) and the second switch tube (CH) being connected in series at two ends of the power source module (21), a primary winding (Zp) of the transformer (T) being coupled to two ends of the first switch tube (CL) by means of the first capacitor (Cr), the transformer (T) comprising a first secondary winding (Zs) and a second secondary winding (Za), and the first secondary winding (Zs) of the transformer (T) being coupled to a load (RL); and the IC controller (13), which turns on the first switch tube (CL) or the second switch tube (CH) according to the value of a first voltage, such that the switch conversion module (12) enters a working state and supplies power to the load (RL), and which turns off the first switch tube (CL) and the second switch tube (CH) according to the value of a second voltage, such that the switch conversion module (12) stops supplying power to the load (RL).
Inventors:
WANG LEI (CN)
WU LIANG (CN)
HE ZUWEI (CN)
WU LIANG (CN)
HE ZUWEI (CN)
Application Number:
PCT/CN2021/122694
Publication Date:
January 05, 2023
Filing Date:
October 08, 2021
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M3/335
Foreign References:
| US9112418B2 | 2015-08-18 | |||
| CN103856079A | 2014-06-11 | |||
| CN112582982A | 2021-03-30 | |||
| CN107979264A | 2018-05-01 | |||
| US20120106215A1 | 2012-05-03 |
Attorney, Agent or Firm:
E-TONE INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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