Switching regulator and method for eliminating beat oscillation

Details Switching regulator and method for eliminating beat oscillation Switching regulator and method for eliminating beat oscillation

2009-10-02

2011-11-01

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S286000

Reexamination Certificate

active

08049478

ABSTRACT:
The present invention discloses a switching regulator eliminating beat oscillation, comprising: a first transistor, a second transistor, and an inductor connected to a common node, wherein the first and second transistors operate to convert an input voltage to an output voltage; a comparator comparing a voltage signal with a saw tooth wave to generate a control signal controlling at least one of the first and second transistors; a feedback loop obtaining a feedback signal from the output voltage and generating the voltage signal according to the feedback signal; and an inductorless filter circuit located in the feedback loop for filtering a predetermined frequency band.

REFERENCES:
patent: 3986100 (1976-10-01), Beierholm et al.
patent: 5912552 (1999-06-01), Tateishi
patent: 6320733 (2001-11-01), Feldtkeller
patent: 2004/0189264 (2004-09-01), Matsuura et al.
patent: 2005/0046401 (2005-03-01), Inn et al.
patent: 2008/0207155 (2008-08-01), Shimada et al.

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