Title:
DC-DC VOLTAGE CONVERSION APPARATUS, POWER SUPPLY DEVICE, AND CONTROL METHOD FOR DC-DC VOLTAGE CONVERSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/082810
Kind Code:
A1
Abstract:
A DC-DC voltage conversion apparatus, a power supply device, and a control method for a DC-DC voltage conversion apparatus. The dynamic response speed of a DC-DC voltage conversion apparatus can be increased. The apparatus comprises a resonant conversion unit, a resonant signal sampling unit, an output voltage sampling unit and a controller. The resonant signal sampling unit is used for sampling a resonant voltage vcr at a primary side of a transformer in the resonant conversion unit, and outputting a sampling reference voltage vsns; the output voltage sampling unit is used for sampling an output voltage Vout of the resonant conversion unit, and outputting a feedback voltage Vfb; and the controller is further used for: acquiring the sampling reference voltage vsns and the feedback voltage Vfb; and obtaining a time length parameter tlp according to the feedback voltage Vfb; and outputting a switch control signal for controlling the switching-on/switching-off of a switch S1 and a switch S2, wherein the switch control signal is determined according to the time length parameter Tlp and the sampling reference voltage vsns.
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Inventors:
CHIN KEN (CN)
LIU YUANJUN (CN)
HU ZHIXIANG (CN)
WANG SHUAIBING (CN)
LIU YUANJUN (CN)
HU ZHIXIANG (CN)
WANG SHUAIBING (CN)
Application Number:
PCT/CN2022/117511
Publication Date:
May 19, 2023
Filing Date:
September 07, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M3/335
Foreign References:
| CN114499196A | 2022-05-13 | |||
| CN112366954A | 2021-02-12 | |||
| CN108923657A | 2018-11-30 | |||
| US20190068071A1 | 2019-02-28 | |||
| CN107666244A | 2018-02-06 | |||
| JPH10225122A | 1998-08-21 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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