Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2010-03-11
2011-10-04
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S272000
Reexamination Certificate
active
08030911
ABSTRACT:
A hybrid control circuit and method combine analog circuit and digital circuit to generate digital PWM signals for a multiphase DC-DC converter to generate an output voltage. For current balance control, analog current error signals are generated by the analog circuit from analog phase current signals of the multiphase DC-DC converter and then converted into digital current error signals for calculating the duties of each phase of the multiphase DC-DC converter. Therefore, fewer bit devices can be used to achieve precise current balance control and the size and cost of the circuit can be reduced.
REFERENCES:
patent: 6806689 (2004-10-01), Schuellein et al.
Chang Wei-Hsu
Cheng Kuang-Yao
Fu Yi-Chiang
Nien Hung-Shou
Richtek Technology Corp.
Riley Shawn
Rosenberg , Klein & Lee
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