US 12,082,322 B2
Load control device for a light-emitting diode light source
Robert C Newman, Jr., Emmaus, PA (US); and Stuart W. DeJonge, Riegelsville, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Oct. 28, 2020, as Appl. No. 17/083,262.
Application 17/083,262 is a continuation of application No. 16/532,365, filed on Aug. 5, 2019, granted, now 10,827,586.
Application 16/532,365 is a continuation of application No. 15/496,932, filed on Apr. 25, 2017, granted, now 10,397,991, issued on Aug. 27, 2019.
Claims priority of provisional application 62/327,198, filed on Apr. 25, 2016.
Prior Publication US 2021/0045211 A1, Feb. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H05B 45/44 (2020.01); H02M 1/10 (2006.01); H05B 45/38 (2020.01); H05B 45/382 (2020.01); H05B 45/10 (2020.01); H05B 45/39 (2020.01); H05B 47/155 (2020.01); H05B 47/165 (2020.01)
CPC H05B 45/44 (2020.01) [H02M 1/10 (2013.01); H05B 45/38 (2020.01); H05B 45/382 (2020.01); H05B 45/10 (2020.01); H05B 45/39 (2020.01); H05B 47/155 (2020.01); H05B 47/165 (2020.01); Y02B 20/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting diode driver for controlling power delivered from a power source to an LED light source, the LED driver configured to receive an input voltage from the power source, the LED driver comprising:
a power converter circuit configured to generate a bus voltage;
a load regulation circuit configured to receive the bus voltage and to control the power delivered to the LED light source;
a rectifier circuit configured to receive the input voltage from the power source, the rectifier circuit configured to rectify the input voltage to generate a rectified voltage and provide the rectified voltage to the power converter circuit when the input voltage is an AC voltage, the rectifier circuit further configured to pass through the input voltage to the power converter circuit when the input voltage is a DC voltage, the rectifier circuit comprising first and second input terminals, first and second output terminals, a first controllable switching circuit, and a second controllable switching circuit, the first and second controllable switching circuits rendered non-conductive when the input voltage is the AC voltage and rendered conductive when the input voltage is the DC voltage; and
a control circuit configured to control the load regulation circuit to control the power delivered to the LED light source, the control circuit configured to operate in the AC mode when the input voltage is the AC voltage and in a DC mode when the input voltage is the DC voltage;
wherein the control circuit is configured to disable the power converter circuit when operating in the DC mode.