Patent ID: 6519339
Filing Date: 2003-02-11
Classification: H04M,Y02D

Abstract:
A method for transferring power across an isolation barrier having a system side and a line side, the line side having a voltage measurement circuit and the line side of the isolation transformer having first and second input nodes, the method comprising:transferring power from the system side to the line side of the isolation barrier; measuring a resulting line side voltage; transferring the measured line side voltage from the line side to the system side; and adjusting the amount of power transferred to the line side based upon the measured line side voltage; wherein the step of transferring power comprises: providing a first pulse signal to the first input node; providing a second pulse signal to the second input node; and the second pulse signal being delayed with respect to the first pulse signal; wherein the first pulse signal and the second pulse signal are repeated at a predetermined frequency, and wherein the step of adjusting the amount of power transferred to the line side comprises selectively varying the duty cycle of the repeated first and second pulse signals.