Power supply converting circuit

Details Power supply converting circuit Power supply converting circuit

2009-05-11

2011-11-15

Stiglic, Ryan (Department: 2111)

Electrical computers and digital processing systems: support

Computer power control

C323S283000

Reexamination Certificate

active

08060764

ABSTRACT:
A power supply converting circuit includes a multi-phase pulse-width modulation (PWM) controller, a single-phase PWM controller, some first voltage converting circuits, a second voltage converting circuit, first and second electrical switch units. The multi-phase PWM controller provides some first PWM signals and a second PWM signal. The single-phase PWM controller provides a third PWM signal. The first voltage converting circuits receive the first PWM signals to output a first power supply to a central processing unit (CPU) chipset. The first electrical switch unit receives the second and third PWM signals to selectively output the second or third PWM signal to the second voltage converting circuit to output one of the first and second power supplies. The second electrical switch unit receives one of the first and second power supplies from the second voltage converting circuit to selectively output one of the first and second power supplies to the CPU chipset.

REFERENCES:
patent: 7802122 (2010-09-01), Park
patent: 2007/0061601 (2007-03-01), Park
patent: 2008/0238390 (2008-10-01), Trivedi et al.
patent: 2009/0019295 (2009-01-01), Wu et al.
patent: 2009/0199021 (2009-08-01), Chu et al.
patent: 2009/0276641 (2009-11-01), Peng et al.
patent: 2010/0033151 (2010-02-01), Wu et al.
patent: 101344810 (2009-01-01), None

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