Power Converter With Capacitive Energy Transfer And Fast Dynamic Response

摘要

A converter circuit and related technique for providing high power density power conversion includes a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) stage. The circuits and techniques achieve high performance over a wide input voltage range or a wide output voltage range. The converter can be used, for example, to power logic devices in portable battery operated devices.

主权项

1. A converter circuit comprising:
a switched capacitor transformation stage having a transformation stage input port and a transformation stage output port, said switched capacitor transformation stage comprising one or more switches and one or more capacitors and said switched capacitor transformation stage configured to accept an input voltage at the transformation stage input port and provide an intermediate output voltage at the transformation stage output port; an auxiliary converter stage having an input coupled to said switched capacitor transformation stage, said auxiliary converter stage comprising one or more switches and one or more magnetic energy storage components configured to recover energy normally dissipated in capacitors of said switched capacitor transformation stage via said one or more magnetic energy storage components.