US 12,289,808 B2
LED driver with integrated LED lighting for human centric black body dimming
Michael Archer, Moorpark, CA (US); Louis Chen, Simi Valley, CA (US); and James H. Mohan, Valencia, CA (US)
Assigned to ERP POWER, LLC, Westlake Village, CA (US)
Filed by ERP POWER, LLC, Moorpark, CA (US)
Filed on Aug. 9, 2023, as Appl. No. 18/446,800.
Application 18/446,800 is a continuation of application No. 17/473,914, filed on Sep. 13, 2021, granted, now 11,882,632.
Claims priority of provisional application 63/079,981, filed on Sep. 17, 2020.
Prior Publication US 2023/0389150 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H05B 45/20 (2020.01); H05B 45/10 (2020.01); H05B 45/325 (2020.01); H05B 45/382 (2020.01); H05B 45/46 (2020.01)
CPC H05B 45/20 (2020.01) [H05B 45/10 (2020.01); H05B 45/325 (2020.01); H05B 45/382 (2020.01); H05B 45/46 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A multi-channel power supply system comprising:
a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal;
a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and a first reference signal; and
a channel controller configured to control the first current control circuit by generating the first reference signal based on a color temperature according to a black body curve and further based on a dimmer setting,
wherein the first current control circuit comprises:
a current sensor configured to sense the first channel current of the first color channel and to generate a first sense signal;
an error amplifier configured to receive the first sense signal and the first reference signal, and to generate a gate control signal based on a difference between the first reference signal and the first sense signal; and
a voltage-controlled resistor (VCR) configured to adjust the first channel current by dynamically adjusting a resistance of the VCR based on the gate control signal.