Browse Prior Art Database

Load Compensated Voltage Regulator

IP.com Disclosure Number: IPCOM000072866D
Original Publication Date: 1970-Oct-01
Included in the Prior Art Database: 2005-Feb-22
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Nallin, EJ: AUTHOR

Abstract

This regulator provides increased terminal voltage as current requirements increase, thereby compensating for line losses. The use of single polarity transistors facilitates incorporation of the regulator into integrated circuits.

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Load Compensated Voltage Regulator

This regulator provides increased terminal voltage as current requirements increase, thereby compensating for line losses. The use of single polarity transistors facilitates incorporation of the regulator into integrated circuits.

As the load current I(L) increases, the collector voltage V(1) decreases, which causes a feedback current IG to decrease and a base voltage V(2) of transistor T(1) to increase. As a result, an increase in the load current causes an increase in load voltage which compensates for distribution losses.

When load current decreases, the collector voltage V(1) increases, causing the current I(G) to increase. Because of the tracking between transistors, T(2) and T(3), I(F) also increases, causing the base voltage V(2) of transistor T(1) to decrease. This causes a reduction in output voltage V(0) as the load current I(L) is reduced.

Resistor R(P) is selected to have a value so that V(SUPPLY) - I(L(MAX)) R(P) > V(0) + 1. Resistor R(S) is selected to have a value so that V(SUPPLY) - I(LMAX).) R(S) over (beta(T1MIN) +1) > V(0) + 2 Having defined R(S) and R(P), then R(F) is defined by the stability criterion = R(P)R(S) over R(LMIN.) R(F) < 1, where R(LMIN). is the minimum load impedance.

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