Patent ID: 7616464
Filing Date: 2009-11-10
Classification: H02M

Abstract:
1. A power converter system comprising: an input circuit for receiving an input voltage and generating an intermediate voltage; an output circuit for receiving the intermediate voltage and generating an output voltage; an output inductance arranged at an output of the output circuit; a reverse current module, the reverse current module monitoring a first voltage that varies in accordance with voltage output of the output inductance and monitoring a second voltage that varies in accordance with voltage input of the output inductance, the reverse current module determining an anticipated reverse current condition in accordance with the first and second voltages and generating a control signal to prevent current from flowing in a reverse direction in the output circuit in response to the anticipated reverse current condition; and a synchronous rectifier in the output circuit, wherein the reverse current module disables activation of the synchronous rectifier upon anticipation of a reverse current condition wherein the reverse current module determines the second voltage in accordance with an average of the voltage input of the output inductance and the reverse current module anticipates a reverse current condition when the first voltage is greater than the second voltage.