Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2008-01-29
2008-01-29
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S281000, C323S315000, C323S316000, C323S276000, C323S277000, C323S274000, C361S093900, C361S126000, C330S297000, C330S257000, C330S292000, C330S107000
Reexamination Certificate
active
07323854
ABSTRACT:
Control loops in a voltage regulator can be stabilized using minimal silicon area. A current limit signal, generated by a current limit control loop in the voltage regulator, can be divided to minimize a zero provided in a compensation set associated with a voltage control loop, thereby stabilizing both loops. The compensation set can include a resistor (the zero) and a capacitor (a pole) connected in series between output and input terminals of an amplifier. Dividing the current limit signal can include injecting a first portion of the current limit signal on a first side of the resistor and injecting a second portion of the current limit signal on a second side of the resistor. The ratio of the first and second portions can be based on a gain of the amplifier, thereby minimizing an effect of the resistor.
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patent: 6556083 (2003-04-01), Kadanka
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patent: 2007/0096825 (2007-05-01), Okuyama
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Bever Hoffman & Harms LLP
Hansen Stuart
Harms Jeanette S.
Micrel Incorporated
Vu Bao Q.
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