Patent ID: 7023268

Claim:
A system comprising: a PWM modulator; a driver; an output stage; and feedback circuitry; wherein the driver is coupled between the PWM modulator and the output stage, wherein the driver is configured to receive high-side and low-side PWM signals from the PWM modulator and to drive the high-side and low-side PWM signals to the output stages; wherein the feedback circuitry is coupled between the output stage and the PWM modulator, wherein the feedback circuitry is configured to provide feedback associated with dead time and shoot-through current in the output stage to the PWM modulator, wherein the feedback circuitry is configured to measure shoot-through current in the output stage, wherein the feedback circuitry includes a resistor coupled in series with a pair of output stage transistors, and a comparator configured to measure a voltage drop across the resistor and compare the measured voltage drop to a threshold level; and wherein the PWM modulator is configured to adjust the relative timing of the high-side and low-side PWM signals in response to the feedback to optimize the dead time and shoot-through current in the output stage.