High efficiency high speed low noise regulator

Details High efficiency high speed low noise regulator High efficiency high speed low noise regulator

2006-01-10

2006-01-10

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S280000, C323S284000, C323S303000

Reexamination Certificate

active

06984969

ABSTRACT:
A voltage regulator includes a linear mode regulator having a high pass filter circuit connected between its output and an output node, and a switch mode regulator having an low pass filter circuit connected between its output and the same output node. The high pass filter passes high frequency AC current provided by the linear mode regulator to the output node and reduces the low frequency AC and DC currents to substantially zero, and the low pass filter prevents the high frequency AC current produced by the linear mode regulator from being drawn by the switch mode regulator and passes the low AC and DC currents provided by the switch mode regulator to the output node. Thus, the present regulator offers the high response speed and low noise of a linear mode regulator, and the high power efficiency and large continuous output current capability of a switch mode regulator.

REFERENCES:
patent: 4346349 (1982-08-01), Yokoyama
patent: 5003456 (1991-03-01), Forge
patent: 5416416 (1995-05-01), Bisher

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