Patent ID: 8026700

Claim:
A D.C. to D.C. converter, comprising: an input terminal for receiving a first terminal of an inductor, the inductor having a second terminal for receiving an input voltage; a first switch having a first terminal coupled to a first node, a second terminal coupled to a first reference terminal and a control terminal; a regulator coupled to the control terminal of the first switch for regulating conduction of the first switch; diode means coupled between the first node and an output terminal for providing current flow only from the first node to the output terminal; a second switch having a first terminal coupled to the first node, a control terminal, and a second terminal coupled to the output terminal, the second switch selectively short circuiting the diode means; an integrator coupled between the first node and a second reference terminal, the integrator having an output; detector means coupled to the output of the integrator for detecting when voltage at the output of the integrator exceeds a reference voltage, and having an output; and logic circuitry having an input coupled to the output of the detector means and an output coupled to the control terminal of the second switch, the logic circuitry making the second switch conductive in response to the first switch becoming nonconductive and making the second switch nonconductive in response to the output of the detector means.