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BATTERY SIMULATOR THAT REGULATES VOLTAGE AT LOAD (WITHOUT REMOTE SENSING)

IP.com Disclosure Number: IPCOM000005844D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-12
Document File: 1 page(s) / 36K

Publishing Venue

Motorola

Related People

Robert H. Miller: AUTHOR

Abstract

This Battery Simulator/Regulator compensates for IR dmps to the load. This gives a constant load voltage without remote sensing and consequent stability problems.

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MOTOROLA Technical Developments Volume 10 March 1990

BATTERY SIMULATOR THAT REGULATES VOLTAGE AT LOAD (WITHOUT REMOTE SENSING)

by Robert H. Miller

This Battery Simulator/Regulator compensates for IR dmps to the load. This gives a constant load voltage without remote sensing and consequent stability problems.

Under No Load: The D-A converter supplies input voltage Vin to opamp. The amp supplies constant out- put voltage Vo.

Under Load: Load current is sampled across Rm. This (IRm) drop also reflects across Rz, thus add- ing (current dependent) compensation to the programmed voltage Vin.

The amount of compensation is set by Rl to R2 and can be set for under, correct or over compensation (at the load).

One time adjustment of RllR2 compensates for all voltages/currents (as long as R lead remains constant).

Cap C insures high frequency stability.

Rl R2

+vv-

VIN

D-A CONVERT

0 Motorola, Inc. 1990 31

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