Analog variable-frequency controller and switching converter...

Details Analog variable-frequency controller and switching converter... Analog variable-frequency controller and switching converter...

2011-04-12

2011-04-12

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S283000, C323S284000

Reexamination Certificate

active

07923975

ABSTRACT:
An analog variable-frequency controller includes a first current generator, a second current generator, a clock generator and a light/heavy load selector. The first and second current generator receive a load current signal and then output a first voltage signal and a second voltage signal, respectively. The clock generator generates a corresponding switching frequency according to the first voltage signal or the second voltage signal. The light/heavy load selector, connected with the first current generator, the second current generator and the clock generator, receives a control signal for controlling the clock generator to receive the first voltage signal or the second voltage signal. The abovementioned controller is implemented by an analog circuit, which has a lower circuit complexity, lower cost and is easy to be integrated into a switching converter.

REFERENCES:
patent: 6871289 (2005-03-01), Pullen et al.

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