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Patent Searching and Data


Title:
RESONANT CONVERSION CIRCUIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/120244
Kind Code:
A1
Abstract:
A resonant conversion circuit and a control method therefor. The resonant conversion circuit is provided with multi-level inversion circuits (110) in front of resonant units (120). By means of the multi-level inversion circuits, the voltage input to the resonant units can be lowered. Lowering of the input voltage of the resonant units necessarily causes lowering of the output voltage of the whole resonant conversion circuit. In the process, the final output voltage is adjusted by adjusting the input voltage of the resonant units, without greatly adjusting the switching frequency of the resonant conversion circuit. Therefore, when the output voltage is relatively low, the resonant conversion circuit still can work close to the resonant frequency, thereby lowering the semiconductor switching loss in low voltage output, and improving the conversion frequency and load capacity of the resonant conversion circuit in low voltage output.

Inventors:
ZHANG YANZHONG (CN)
MA ZHENG (CN)
HUANG BONING (CN)
TORRICO-BASCOPÉ GROVER VICTOR (CN)
FU DIANBO (CN)
Application Number:
CN2018/122306
Publication Date:
June 27, 2019
Filing Date:
December 20, 2018
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M3/335; H02M7/483
Foreign References:
CN108258909A2018-07-06
CN108566094A2018-09-21
CN101728961A2010-06-09
JP2015027169A2015-02-05
US20140198536A12014-07-17
CN201711407832A2017-12-22
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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