转换一个固定的PWM(脉宽调制)可调节PWM Converting a Fixed PWM to an Adjustable PWM Technical Brief March 1, 2006 TB458.0 Description VCC = 3.3V This application note goes through the thought processes of how to convert a fixed PWM single output into a 0.7V to 1.3V R1 adjustable output regulator. Even though the EL7554 is used FB as an example, this application note is applicable to any ……