Control circuit, voltage regulator and related control method

Details Control circuit, voltage regulator and related control method Control circuit, voltage regulator and related control method

2008-11-13

2010-11-09

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S369000

Reexamination Certificate

active

07830129

ABSTRACT:
A control circuit, applicable to a voltage regulator including a power switch. The control circuit includes a variable resistance generating unit and a detecting circuit. The variable resistance generating unit provides a variable resistor with resistance that varies over time. A reference current representing the current flowing through the power switch flows through the resistor to generate a first feedback voltage. The detecting circuit reduces the conduction of the power switch when the first feedback voltage is detected as being equal to or exceeding a predetermined voltage level.

REFERENCES:
patent: 6011385 (2000-01-01), Brandt et al.

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