Title:
LED DRIVING POWER SUPPLY, POWER SUPPLY CIRCUIT, AND POWER SUPPLY METHOD
Document Type and Number:
WIPO Patent Application WO/2022/257534
Kind Code:
A1
Abstract:
The present invention provides an LED driving power supply, a power supply circuit, and a power supply method. The power supply circuit comprises: a rectifier module, which rectifies an alternating current voltage to obtain an input voltage. A first diode and a second diode are connected in series in the same direction, and then connected in parallel to an output end of the rectifier module. A first end of a first inductor is connected to a cathode of the first diode, and a second end is connected to a first end of a main switch. A freewheeling module is connected in parallel to two ends of the first inductor. A lower plate of a first capacitor is connected to an anode of the first diode, and an upper plate is connected to the second end of the first inductor. A first end of the second inductor is connected to a second end of the main switch, and a second end is connected to an inverting output end of the rectifier module via a second capacitor. A cathode of a third diode is connected to the first end of the second inductor, and an anode is connected to the inverting output end of the rectifier module. The present invention has two switches, that is there are two control degrees of freedom, which facilitates the optimization of control parameter design; and the present invention has a fast load dynamic response speed and small output current ripple.
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Inventors:
LIU CHAORUI (CN)
XIA YULONG (CN)
HE QIANGZHI (CN)
ZHANG YUN (CN)
XIA YULONG (CN)
HE QIANGZHI (CN)
ZHANG YUN (CN)
Application Number:
PCT/CN2022/081954
Publication Date:
December 15, 2022
Filing Date:
March 21, 2022
Export Citation:
Assignee:
CHINA RESOURCES MICROELECTRONICS CHONGQING CO LTD (CN)
International Classes:
H02M3/155; H02M1/42
Foreign References:
| CN110768527A | 2020-02-07 | |||
| CN108768192A | 2018-11-06 | |||
| CN104753335A | 2015-07-01 | |||
| CN112366936A | 2021-02-12 | |||
| CN103647448A | 2014-03-19 |
Other References:
LIU CHAORUI: "Research on Tri-state Quadratic Buck PFC Converter", MASTER THESIS, TIANJIN POLYTECHNIC UNIVERSITY, CN, 15 July 2021 (2021-07-15), CN , XP093014517, ISSN: 1674-0246
XIAOQIAN GAO: "A study of three-phase APFC based on quadratic buck converter", INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA), 2012 IEEE, IEEE, 21 May 2012 (2012-05-21), pages 1 - 4, XP032237667, ISBN: 978-1-4673-1221-9, DOI: 10.1109/ISGT-Asia.2012.6303364
XIAOQIAN GAO: "A study of three-phase APFC based on quadratic buck converter", INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA), 2012 IEEE, IEEE, 21 May 2012 (2012-05-21), pages 1 - 4, XP032237667, ISBN: 978-1-4673-1221-9, DOI: 10.1109/ISGT-Asia.2012.6303364
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (CN)
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