Power supply with a digital feedback loop

Details Power supply with a digital feedback loop Power supply with a digital feedback loop

2006-07-06

2008-01-29

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S061000, C363S098000

Reexamination Certificate

active

07324354

ABSTRACT:
A wide range power supply capable of delivering 20V to 5000V is provided. The power supply of the present invention uses switch mode technology to achieve high overall operating efficiency and is capable of operating from no load to full load without loss of regulation. The power supply in accordance with the embodiments of the present invention operates directly from the utility supply (e.g., 110V/220V and 50 Hz/60 Hz). In one embodiment, the power supply's power conversion stage includes the following stages: an input rectifier; a buck converter; a quasi-resonant inverter; and a voltage multiplier. The above indicated stages are connected in series to achieve the large output voltage range. High precision is obtained from a use of a digital feedback loop, possibly in connection with an analog feedback loop.

REFERENCES:
patent: 4035710 (1977-07-01), Joyce
patent: 4533986 (1985-08-01), Jones
patent: 4686615 (1987-08-01), Ferguson
patent: 4761722 (1988-08-01), Pruitt
patent: 6344986 (2002-02-01), Jain et al.
patent: 6556462 (2003-04-01), Steigerwald et al.
patent: 6650552 (2003-11-01), Takagi et al.
patent: 6842353 (2005-01-01), Yamada et al.
patent: 6927985 (2005-08-01), Klinkowstein

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