CHARGE-PUMP DEVICE WITH REDUCED CROSS-CONDUCTION LOSSES

摘要

A charge-pump device receives two complementary driving signals and a DC signal that are applied to a charge-pump stage containing a full-wave rectifier bridge configured to deliver a DC output signal. The bridge includes active switches controllable by control signals present at two control nodes. The charge-pump device further receives complementary auxiliary signals that are respectively synchronous with the complementary driving signals but have faster edges. Two resistive capacitive filters filter the complementary auxiliary signals to generate control signals at the two control nodes for controlling actuation of the active switches in the bridge.

主权项

1. A charge-pump device, comprising:
two main inputs configured to receive two complementary driving signals, a direct current (DC) input configured to receive a DC signal; and at least one charge-pump stage comprising:
a full-wave rectifier bridge connected to said two main inputs for delivering a DC output signal and including active switches controllable by control signals present at two control nodes of said at least one charge-pump stage,first and second auxiliary inputs configured to respectively receive first and second complementary auxiliary signals respectively synchronous with said two complementary driving signals and having faster edges than of said two complementary driving signals, andtwo resistive capacitive filters respectively connected between said first and second auxiliary inputs and said full-wave rectifier and respectively including said two control nodes.