Patent ID: 8451628
Filing Date: 2013-05-28
Classification: H02M

Abstract:
1. A switching converter system to control an output voltage across a load, comprising: an isolated converter forward path that includes a transistor, a transformer, a diode and a capacitor arranged to switchably exchange energy with said capacitor to thereby generate said output voltage; and an isolated converter feedback path extending from said capacitor and configured to digitally control a duty cycle of said transistor in response to said output voltage; wherein said isolated converter feedback path includes: at least one comparator arranged to provide a digital error signal in response to a comparison of said output voltage to a reference voltage; a first isolation channel configured to isolatably transport a clock signal to digitally gate said error signal; a second isolation channel configured to isolatably transport said error signal; and a controller coupled to said first and second isolation channels and configured to control said duty cycle in response to said error signal.