LED DEVICE, LED DRIVING CIRCUIT AND METHOD

摘要

A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.