Title:
FLICKER ELIMINATION LED DRIVING CIRCUIT AND DRIVING CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/065669
Kind Code:
A1
Abstract:
An LED driving circuit, which is used for driving an LED load and ameliorating flickers caused by ripples in a mains supply. The driving circuit comprises: a rectifier bridge group, which has at least one group of output ports and is used for rectifying a mains supply; a load branch, which allows forming two different current paths and comprises an LED load and an LED constant-current control circuit; and a capacitive branch, which at least comprises an input capacitor, wherein the load branch takes a turn-on voltage thereof as a threshold value, and selects a power supply source from between the rectified mains supply and the input capacitor. The LED driving circuit has a simple structure and high reliability, and can optimize the input current harmonic performance while preventing flickers, and thus meet the requirements of various standards.
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Inventors:
FAN MINMIN (CN)
CHEN LIMIN (CN)
CHEN LIMIN (CN)
Application Number:
PCT/CN2022/123255
Publication Date:
April 04, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
SHANGHAI BRIGHT POWER SEMICONDUCTOR CO LTD (CN)
International Classes:
H05B45/00
Foreign References:
| CN107431102A | 2017-12-01 | |||
| KR20120074502A | 2012-07-06 | |||
| CN106413192A | 2017-02-15 | |||
| CN105144847A | 2015-12-09 | |||
| CN106332374A | 2017-01-11 |
Attorney, Agent or Firm:
SHANGHAI SAVVY IP AGENCY CO., LTD. (CN)
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