Digitally programmable converter for reducing the size of the pulse duty factor region of a pulse-width modulated coding

摘要

A digitally programmable pulse-width-modulation (PWM) converter changes a 0% to 100% duty cycle input signal to any desired start and stop duty cycle range; for example, 5% to 95%. This is achieved by the difference in start and stop duty cycles forming a ratio which determines a pair of clock frequencies for modifying the PWM signal to provide the new start and stop duty cycle parameters.