Fast switching charge pump

Details Fast switching charge pump Fast switching charge pump

1986-03-14

1988-12-20

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307246, 307585, 331111, H01L 2710, H03L 100, H03K 3354

Patent

active

047927054

ABSTRACT:
A charge pump implemented in a CMOS monolithic circuit provides a precise output charging current source or current sink with fast switching characteristics. Each of two CMOS output transistors is connected via a transmission gate to a transistor having a constant current flow through it. An MOS capacitor is connected to the gates of the constant current transistors. When a transmission gate is closed, the respective output transistor is coupled to the constant current transistor in a current mirror configuration. The output transistor is quickly switched on to cause a step change in output current.

REFERENCES:
patent: 3886485 (1975-05-01), Takahashi
patent: 3904988 (1975-09-01), Hsiao
patent: 4263567 (1981-04-01), Astle
patent: 4321561 (1982-03-01), Payne et al.
patent: 4375596 (1983-03-01), Hoshi
patent: 4439692 (1984-03-01), Beekmans et al.
patent: 4553047 (1985-11-01), Dillinger et al.
patent: 4692717 (1987-09-01), Ouyang et al.

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