Pulse frequency modulation methods and circuits

Details Pulse frequency modulation methods and circuits Pulse frequency modulation methods and circuits

2005-08-30

2011-11-15

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

08058859

ABSTRACT:
A technique for voltage regulation involves switching between light load mode and PWM mode based on load conditions. Advantageously, this improves efficiency at light load. In an embodiment, error amplifier output is used to determine whether load is light. When light load is detected, extend PWM off time until the output voltage reaches a load threshold.

REFERENCES:
patent: 5568044 (1996-10-01), Bittner
patent: 5663874 (1997-09-01), Mader et al.
patent: 5747976 (1998-05-01), Wong et al.
patent: 6366070 (2002-04-01), Cooke et al.
patent: 6424130 (2002-07-01), Fukui
patent: 6495995 (2002-12-01), Groom et al.
patent: 6545882 (2003-04-01), Yang
patent: 6661679 (2003-12-01), Yang et al.
patent: 7071665 (2006-07-01), Tzeng et al.
patent: 7173404 (2007-02-01), Wu
patent: 7304464 (2007-12-01), Weng et al.
Mano, Morris, Digital Logic and Computer Design, 1979, Prentice-Hall, 1st Edition, pp. 214-216.

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