Patent ID: 7450360

Claim:
An apparatus comprising: a current sensor to generate an overcurrent output if a current level of a switched power supply is greater than a predetermined threshold; a pulse width modulation (PWM) controller coupled to the current sensor, wherein the PWM controller is to receive a clock signal from an oscillator and to disable a drive signal to the switched power supply upon receipt of the overcurrent output; and a lockout circuit activated responsive to a sense disable signal from the oscillator, to prevent the overcurrent output to the PWM controller, the lockout circuit including a first metal oxide semiconductor field effect transistor (MOSFET) gated by the sense disable signal, a PN latch coupled to an output terminal of the first MOSFET, a second MOSFET gated by the PN latch, and a third MOSFET gated by an output of the second MOSFET, the third MOSFET to provide the overcurrent output when the sense disable signal is inactive, wherein the lockout circuit when active is to remove a duty cycle limit on the drive signal.