Feedback circuit for high efficiency linear DC power supply

Details Feedback circuit for high efficiency linear DC power supply Feedback circuit for high efficiency linear DC power supply

1994-02-22

1995-05-09

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

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

G05F 144

Patent

active

054143403

ABSTRACT:
A high efficiency, linear DC power supply circuit includes a pulse width modulator stage for reducing a higher DC source voltage to a lower DC operating voltage at high efficiency, an energy storage device, a linear voltage regulator, and a feedback circuit. The feedback circuit monitors the voltage across the linear voltage regulator and sends a frequent or continuous feedback signal to the pulse width modulator to maintain a relatively fixed voltage across the linear regulator regardless of nominal variations in source voltage, operating temperature, load current, noise, or other shifting parameters. By monitoring only the voltage across the linear regulator, a significant enhancement in performance of the power supply circuit is realized.

REFERENCES:
patent: 4881023 (1989-11-01), Parusse et al.
patent: 5124630 (1992-06-01), Tsutsumi
patent: 5237263 (1993-08-01), Gannono

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