Charge pump circuit for substrate-bias generator

Details Charge pump circuit for substrate-bias generator Charge pump circuit for substrate-bias generator

1987-01-28

1988-06-28

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307303, 357 236, H03L 100, H01L 2704, H01L 2994, H03K 3013

Patent

active

047541687

ABSTRACT:
A substrate bias generator of the type that includes a driver for providing an AC signal to a charge pump node, a first switch coupled between the charge pump node and ground such that charge is pumped from the charge pump node to ground when the voltage at the charge pump node is near its peak, and a second switch coupled between the charge pump node and the substrate such that charge is pumped to the charge pump node from the substrate when the voltage at the charge pump node is near its most negative value. A unidirectional switch is provided between the first switch and ground to prevent charge from flowing from ground to the charge pump node when the second switch is open.

REFERENCES:
patent: 4044373 (1977-08-01), Nomiya et al.
patent: 4208595 (1980-06-01), Gladstein et al.
patent: 4264857 (1981-04-01), Jambotkar
patent: 4377756 (1983-03-01), Yoshihara et al.
patent: 4439692 (1984-03-01), Beekmans et al.
patent: 4471290 (1984-09-01), Yamaguchi

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