Title:
SELF-ADAPTIVE ZVS CIRCUIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/057158
Kind Code:
A1
Abstract:
Disclosed are a self-adaptive ZVS circuit and a control method therefor. The self-adaptive ZVS circuit comprises a power supply V1, a power supply V2, a power supply V3, a switch tube Q1, a switch tube Q2, an inductor L and a double-comparison unit, wherein a drain electrode of the switch tube Q1 and one input end of the double-comparison unit are connected to the power supply V1; a source electrode of the switch tube Q1, a drain electrode of the switch tube Q2 and the other input end of the double-comparison unit are connected to one end of the inductor L1; a source electrode of the switch tube Q2 is connected to the power supply V2; and the other end of the inductor L1 is connected to the power supply V3. In the present invention, a generalized ZVS definition is utilized; and by means of the double-comparison unit, whether a switch tube realizes ZVS can be simply and quickly determined, and a control circuit is informed of whether adjustment is performed in the next period and how to adjust a circuit time sequence in order to realize self-adaptive ZVS of the switch tube. Due to the fact that a comparison speed is far greater than the speed of a sampling and holding circuit, the advantages are even more apparent during high-frequency application.
Inventors:
LU PENGFEI (CN)
Application Number:
PCT/CN2020/100117
Publication Date:
April 01, 2021
Filing Date:
July 03, 2020
Export Citation:
Assignee:
MORNSUN GUANGZHOU SCI & TECH (CN)
International Classes:
H02M1/08; H02M1/088
Foreign References:
| CN110661402A | 2020-01-07 | |||
| CN101501976A | 2009-08-05 | |||
| CN108988652A | 2018-12-11 | |||
| CN108736730A | 2018-11-02 | |||
| CN110086342A | 2019-08-02 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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