Patent ID: 8587221

Claim:
A DC/DC converter comprising: a transformer having a primary winding coupled to a power source, a first secondary winding operable for providing a first output voltage to a first load, and a second secondary winding operable for providing a second output voltage to a second load; a switch controller, coupled to said primary winding, and operable for controlling a first switch coupled to said primary winding so as to control input power to said primary winding and to regulate said first output voltage based on a power requirement of said first load; and a driver controller, coupled to said second secondary winding, and operable for generating a pulse modulation signal to alternately turn on and turn off a second switch coupled to said second secondary winding to regulate said second output voltage based on a power requirement of said second load, wherein said driver controller further receives a synchronous signal indicative of an operation frequency of said switch controller from said first secondary winding and generates said pulse modulation signal based on said synchronous signal to synchronize an operation frequency of said driver controller with said operation frequency of said switch controller.