Title:
LED FLASHING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/017397
Kind Code:
A1
Abstract:
A circuit for driving a light-emitting diode (LED) load (201) and a direct current to direct current (DC-DC) converter (200) includes a first sampling sub-circuit, a driving circuit (300). The first sampling sub-circuit is configured to generate a current signal representing a load current of the LED load (201). The driving circuit (300) is configured to receive a brightness adjustment signal and a frequency adjustment signal; generate a first control signal, based on the current signal and the brightness adjustment signal, for controlling an output current of the DC-DC converter (200); and generate a second control signal, based on the frequency adjustment signal, for controlling a switching frequency of the LED load (201).
Inventors:
YE QIANG (CN)
FANG YONGJUN (CN)
YAO CHENGZE (CN)
FANG YONGJUN (CN)
YAO CHENGZE (CN)
Application Number:
PCT/CN2019/129433
Publication Date:
February 04, 2021
Filing Date:
December 27, 2019
Export Citation:
Assignee:
ZHEJIANG DAHUA TECHNOLOGY CO (CN)
International Classes:
H05B44/00; G03B15/05
Foreign References:
| CN110536506A | 2019-12-03 | |||
| CN201995174U | 2011-09-28 | |||
| CN205374953U | 2016-07-06 | |||
| CN203827560U | 2014-09-10 | |||
| US20140125240A1 | 2014-05-08 |
Other References:
See also references of EP 3984333A4
Attorney, Agent or Firm:
METIS IP (CHENGDU) LLC (CN)
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