Pseudo-random pulse width modulation for high resolution fan control

摘要

A pulse width modulation (PWM) device, system and method for high resolution fan control are disclosed. In one embodiment, the method comprises determining a target duty cycle of a PWM signal, determining the number of PWM cycles in the period of the PWM signal, pseudo-randomly selecting a duty cycle for each PWM cycle using one or more look-up tables and generating the PWM signal based on the duty cycle.