US 9,814,105 B2
Control circuit for LED and active bleeder thereof
Chen-Hua Chiu, New Taipei (TW); Moon-Ho Choi, Seoul (KR); and Gwan-Bon Koo, Gyeonggi-do (KR)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed on Nov. 10, 2016, as Appl. No. 15/347,987.
Claims priority of provisional application 62/254,251, filed on Nov. 12, 2015.
Prior Publication US 2017/0142797 A1, May 18, 2017
Int. Cl. H05B 37/02 (2006.01); H05B 33/08 (2006.01)
CPC H05B 33/0809 (2013.01) 20 Claims
OG exemplary drawing
 
1. A control circuit for LED, comprising:
an LED driver configured to drive at least one LED and to form a current-sense signal correlated to an LED current; and
a bleeder circuit coupled to the LED driver to receive the current-sense signal and configured to sink a bleeding current in accordance with the current-sense signal.