PULSE WIDTH MODULATION (PWM) CIRCUIT AND METHOD FOR ENABLING THE SAME

摘要

A pulse width modulation (PWM) circuit and a method for enabling the same are provided. The method includes the steps of: receiving a first power voltage and a second power voltage; providing a high-side driving power pin, wherein the peripheral circuit of the high-side driving power pin is adapted for generating a high-side driving voltage according to the first power voltage and the second power voltage; and enabling the PWM circuit when the high-side driving voltage is larger than the second power voltage.