Method and an apparatus to adjust duty cycle for voltage...

Details Method and an apparatus to adjust duty cycle for voltage... Method and an apparatus to adjust duty cycle for voltage...

2008-07-29

2008-07-29

Sterrett, Jeffrey L (Department: 2838)

Electricity: power supply or regulation systems

Input level responsive

C323S271000, C323S283000

Reexamination Certificate

active

11430788

ABSTRACT:
A method and an apparatus to regulate voltage supply have been disclosed. In one embodiment, the apparatus includes a power converter block to generate an output voltage from an input voltage and a voltage regulator controller coupled to the power converter block to input at least one time-modulated signal to the power converter block, the at least one time-modulated signal having a duty cycle, the voltage regulator controller including a counter having an increment value substantially proportional to the input voltage, wherein the counter is used to adjust the duty cycle of the at least one time-modulated signal. Other embodiments have been claimed and described.

REFERENCES:
patent: 6954054 (2005-10-01), Brown
patent: 6977488 (2005-12-01), Nogawa et al.
patent: 7027944 (2006-04-01), Tabaian et al.
patent: 7123104 (2006-10-01), Bostak et al.
patent: 7215108 (2007-05-01), Inn et al.
patent: 7221130 (2007-05-01), Ribeiro et al.
patent: 7292016 (2007-11-01), Wake
patent: 2006/0145678 (2006-07-01), Ribeiro et al.

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