Patent ID: 9673721
Date: 2017-06-06
CPC Classifications: H02M,Y02B

Claim:
1. An isolated electronic apparatus comprising: a transformer comprising a primary winding and a secondary winding; a first controller to control one or more first switches coupled to the primary winding; a second controller to control one or more second switches coupled to the secondary winding; a reference signal generator, coupled to one of the first controller and the second controller, to provide a first switch control reference clock signal to the one of the first controller and the second controller; a voltage sensor to sense a reflected voltage across the one of the primary winding and the secondary winding to which the other of the first controller and the second controller is coupled; a synchronizer, coupled to the voltage sensor and to the other of the first controller and the second controller, to synchronize a second switch control reference clock signal for the other of the first controller and the second controller to the first switch control reference clock signal based on the reflected voltage, the synchronizer comprising a Phase Locked Loop (PLL).