Switching regulator

Details Switching regulator Switching regulator

2005-02-08

2005-02-08

Laxton, Gary L. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S282000, C323S288000

Reexamination Certificate

active

06853172

ABSTRACT:
To provide a switching regulator with a small packaging area. A switching regulator according to the present invention includes: a first terminal for inputting an output voltage of the switching regulator; a reference voltage source for generating a reference voltage; a voltage divider circuit for dividing the output voltage of the switching regulator; an error amplifier for inputting the reference voltage and an output signal of the voltage divider circuit; a first circuit block having a resistance, for outputting a signal that varies depending on a resistance value of the resistance; a second circuit block having a square wave oscillator, for outputting a signal based on an output signal of the square wave oscillator and an output signal of the first circuit block; a third circuit block having a logic circuit for receiving the output signal of the square wave oscillator and the output signal of the second circuit block to output a signal, and a circuit for outputting an output signal, which is controlled based on an output of the logic circuit; and a comparator for receiving an output of the error amplifier and the output signal of the third circuit block to output a signal.

REFERENCES:
patent: 6198264 (2001-03-01), Nagaya et al.
patent: 6229293 (2001-05-01), Farrenkopf

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