Patent ID: 6677738
Filing Date: 2004-01-13
Classification: H02H,H02M,Y02B

Abstract:
A DC-DC switching regulator, adapted to receive a pulsed signal, comprising:an inductor; a first capacitor having one port connected to ground, and having a second port providing an output voltage of the DC-DC regulator; a driver coupled to the inductor and adapted to drive pulses of current to the inductor when the pulsed signal is asserted; a rectifier adapted to provide a path for the inductor to drive current to charge the first capacitor when the pulsed signal is not asserted; and an overcurrent circuit adapted to sense a threshold current of the switching regulator corresponding to an overcurrent condition and to provide an overcurrent indication signal in response thereto, including a ringing compensation circuit adapted to control the overcurrent circuit threshold for providing the overcurrent indication signal from a first level to a subsequent second level less than the first level.