Patent ID: 7990187

Claim:
A power switch driver for driving a power switch, the power switch driver comprising: a top driver switch and a bottom driver switch at a driver node to a control terminal of the power switch; driver logic operable to provide pulse width modulation (PWM) control signals to at least one of the top driver switch and the bottom driver switch for driving the power switch at the driver node, wherein the driver logic comprises: a pulse width generator programmer operable to output a program voltage signal; a ramp generator operable to receive an input control signal and to generate a ramp signal in response; a comparator having a non-inverting input terminal and an inverting input terminal, the non-inverting input terminal operable to receive the program voltage signal from the pulse width generator programmer, the inverting input terminal operable to receive the ramp signal from the ramp generator, the comparator operable to compare the program voltage signal to the ramp signal and to generate a comparator output signal in response; and an AND gate having first and second input terminals, the first input terminal of the AND gate operable to receive the comparator output signal from the comparator, the second input terminal of the AND gate operable to receive the input control signal, the AND gate operable to perform an AND operation on the comparator output signal and the input control signal and to generate a control signal for turning on and off at least one of the top driver switch and the bottom driver switch.