Title:
SYNCHRONOUS RECTIFICATION BOOST CONVERTER, AND SYNCHRONOUS RECTIFICATION CONTROL CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/085548
Kind Code:
A1
Abstract:
Provided are a synchronous rectification control circuit and method. The synchronous rectification control circuit comprises an output detection unit (102), an error amplification unit (103), a logic control unit (104) and a driving circuit unit (105), wherein the output detection unit (102) is connected between a positive output end of a main power unit (101) and a first input end of the error amplification unit (103); an output end of the error amplification unit (103) is connected to a first input end of the logic control unit (104); a first output end and a second output end of the logic control unit (104) are respectively connected to a first input end and a second input end of the driving circuit unit (105); a first output end and a second output end of the driving circuit unit (105) are respectively connected to gates of switch tubes M1 and M2; and a third output end of the driving circuit unit (105) is respectively connected to a drain of the switch tube M1 and a source of the switch tube M2. The synchronous rectification control circuit also comprises an input detection unit (107) and a nonlinear modulation unit (108), wherein an output end of the input detection unit (107) is connected to an input end of the nonlinear modulation unit (108), and an output end of the nonlinear modulation unit (108) is connected to a second input end of the logic control unit (104).
Inventors:
HE LEI (CN)
LIU XIANG (CN)
LIU XIANG (CN)
Application Number:
PCT/CN2018/096046
Publication Date:
May 09, 2019
Filing Date:
July 18, 2018
Export Citation:
Assignee:
MORNSUN GUANGZHOU SCI & TECH (CN)
International Classes:
H02M3/158
Foreign References:
| CN107769556A | 2018-03-06 | |||
| CN106374739A | 2017-02-01 | |||
| CN106067733A | 2016-11-02 | |||
| CN101459381A | 2009-06-17 | |||
| US20080290846A1 | 2008-11-27 | |||
| US20090016087A1 | 2009-01-15 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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