The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2022
Filed:
Dec. 06, 2019
Applicant:
Silergy Semiconductor Technology (Hangzhou) Ltd, Hangzhou, CN;
Inventors:
Huiqiang Chen, Hangzhou, CN;
Jianxin Wang, Hangzhou, CN;
Assignee:
Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/14 (2006.01); H02M 7/15 (2006.01); H05B 45/10 (2020.01); H05B 45/395 (2020.01); H05B 45/36 (2020.01); H05B 45/3725 (2020.01); H05B 45/31 (2020.01); H05B 45/345 (2020.01); H05B 45/3575 (2020.01);
U.S. Cl.
CPC ...
H02M 1/14 (2013.01); H02M 7/15 (2013.01); H05B 45/10 (2020.01); H05B 45/36 (2020.01); H05B 45/3725 (2020.01); H05B 45/395 (2020.01); H05B 45/31 (2020.01); H05B 45/345 (2020.01); H05B 45/3575 (2020.01); Y02B 20/30 (2013.01);
Abstract
An apparatus can include: a linear drive circuit configured to control a drive current flowing through an LED load; a control circuit configured to acquire a conduction angle signal of a silicon-controlled rectifier dimmer and control the linear drive circuit; and the control circuit being configured to control the drive current to be decreased to reduce a current ripple and to maintain the silicon-controlled rectifier dimmer in a turn-on state when the conduction angle signal is less than a predetermined value.