Patent ID: 11864286
Assignee: ERP POWER, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. 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, the plurality of color channels comprising a red color channel, a green color channel, and a blue color channel;
a channel controller configured to generate a first pulse width modulated (PWM) signal for controlling an output light intensity of the green color channel, a second PWM signal for controlling an output light intensity of the blue color channel, and a third PWM signal for controlling an output light intensity of the red color channel;
a filter circuit configured to generate a first pseudo-sawtooth signal based on the first PWM signal, a second pseudo-sawtooth signal based on the second PWM signal, and a third pseudo-sawtooth signal based on the third PWM signal;
a first current control circuit coupled to the green color channel and configured to adjust a first channel current of the green color channel based on the drive signal and the first pseudo-sawtooth signal;
a second current control circuit coupled to the blue color channel and configured to adjust a second channel current of the blue color channel based on the drive signal and the second pseudo-sawtooth signal; and
a third current control circuit coupled to the red color channel and configured to adjust a third channel current of the red color channel based on the drive signal and the third pseudo-sawtooth signal.