Regulator for substrate voltage generator

Details Regulator for substrate voltage generator Regulator for substrate voltage generator

1983-01-06

1985-11-12

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307304, H03L 100

Patent

active

045530475

ABSTRACT:
A regulated on-chip substrate-voltage generator circuit converts a single power supply input and ground potential into a negative potential. The negative potential is applied to the substrate of an integrated circuit upon which the substrate-voltage generator is formed. The substrate voltage generator includes a voltage oscillator connected to a charge pump device. A pair of depletion FETs forms a voltage divider circuit between the ground potential and the substrate potential. An amplifier, formed from depletion FETs, couples the voltage divider into the charge pump. The voltage divider and amplifier regulate the charge pump thereby maintaining tight control over the substrate voltage.

REFERENCES:
patent: 4004164 (1977-01-01), Cranford, Jr. et al.
patent: 4049980 (1977-09-01), Maitland
patent: 4152716 (1979-05-01), Torii et al.
patent: 4439692 (1984-03-01), Beekmans et al.
patent: 4446383 (1984-05-01), Concannon et al.
patent: 4446384 (1984-05-01), Taira
patent: 4471290 (1984-09-01), Yamaguchi

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