Synchronous rectifier control for synchronous boost converter

Details Synchronous rectifier control for synchronous boost converter Synchronous rectifier control for synchronous boost converter

2007-03-27

2011-11-22

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S233000, C363S127000

Reexamination Certificate

active

08063615

ABSTRACT:
A synchronous boost DC/DC conversion system comprises an input for receiving a DC input voltage, an output for producing a DC output voltage, a power switch controllable to adjust an output signal of the conversion system, and an inductor coupled to the input. A synchronous rectifier is configurable to create a conduction path between the inductor and the output to provide the inductor discharge. A control circuit is provided for controlling the synchronous rectifier as the input voltage approaches the output voltage, so as to adjust average impedance of the conduction path over a discharge period of the inductor.

REFERENCES:
patent: 5721483 (1998-02-01), Kolluri et al.
patent: 6998825 (2006-02-01), Nagaoka et al.
patent: 7148668 (2006-12-01), Collins

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