G - Physics – 05 – F
Patent
G - Physics
05
F
330/21
G05F 1/56 (2006.01) G05F 1/59 (2006.01) G05F 1/613 (2006.01) H03F 1/34 (2006.01) H03F 3/30 (2006.01) H03F 3/68 (2006.01)
Patent
CA 1296396
PATENT A B S T R A C T An error amplifier is disclosed for use in linear or switched-mode voltage or current regulators that use a transconductance type power-amplifier, enabling easy modular parallel connection of said regulators by simply parallel wiring of normally externally accessible nodes of the individual regulators: power- input, power-output, error amplifier output, and error amplifier input, to boost the system's total output power by about equally sharing the total output power among the individual regulators, comprising of a an amplifier with grossly asymmetric output current capability in sink and source directions; and b. a sense circuit to slightly modify the voltage on the reference input of the said amplifier when the lower value output current limit becomes active so that it causes positive feedback thereby ensuring that at any time only one of the plurality of parallel operated amplifiers is active and controls the system's output while all the other amplifiers are in current limit and thereby inactive.
614416
National Semiconductor Corporation
Smart & Biggar
Szepesi Tamas S.
LandOfFree
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