Method and apparatus for a switch mode power supply that...

Details Method and apparatus for a switch mode power supply that... Method and apparatus for a switch mode power supply that...

2006-06-27

2006-06-27

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C363S021090

Reexamination Certificate

active

07068022

ABSTRACT:
A power supply with high pulse width modulation gain and low noise sensitivity has been disclosed. In one embodiment, a power supply includes a regulator circuit controlling a power switch. The regulator circuit includes a control input that receives a current, which is the sum of a consumption current of the regulator and a feedback current. The consumption current of the regulator is varied as a function of the duty cycle of the power switch. The feedback current is the current in a shunt regulator, which is control current in excess of the internal consumption of the regulator.

REFERENCES:
patent: 5313381 (1994-05-01), Balakrishnan
patent: 5461303 (1995-10-01), Leman et al.
patent: 6154377 (2000-11-01), Balakrishnan et al.
patent: 6212079 (2001-04-01), Balakrishnan et al.
patent: 6233161 (2001-05-01), Balakrishnan et al.
patent: 6426886 (2002-07-01), Goder
patent: 6597586 (2003-07-01), Balakrishnan et al.
patent: 0585789 (1995-08-01), None
Balakrishnan, B., “Three Terminal Off-Line Switching Regulator Reduces Cost and Parts Count,” Power Conversion, Sep. 1994 Proceedings, pp. 267-279.

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