Detector and integrated circuit device including charge pump cir

Details Detector and integrated circuit device including charge pump cir Detector and integrated circuit device including charge pump cir

1991-05-02

1991-12-24

Callahan, Timothy P.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307354, 3072968, 307304, H03K 5153, H03K 524

Patent

active

050755722

ABSTRACT:
The described embodiments of the present invention provide a voltage generation circuit for biasing a particular node to a selected voltage level. A circuit is included for monitoring when the voltage supply to the integrated circuit is well above optimal specifications. When this circuit detects an over-voltage condition, a signal is provided to multiplexing circuitry which causes a higher frequency input signal to be provided to a voltage generating charge pump. Thus, the charge pump capacity is increased. In other embodiments of the present invention other factors may be sensed and the appropriate signal supplied to the charge pump driving circuitry to provide higher biasing levels. For example, current may be sensed at the voltage supply inputs to determine when the circuit is drawing a high level of current.

REFERENCES:
patent: 3806741 (1974-04-01), Smith
patent: 4301380 (1981-11-01), Thomas
patent: 4321489 (1982-03-01), Higuchi et al.
patent: 4322639 (1982-03-01), Yamashiro
patent: 4717840 (1988-01-01), Ouyang et al.
patent: 4813680 (1989-03-01), Kawashima et al.
patent: 4873458 (1989-10-01), Yoshida
Yen, "Simple Volt.-Level Detectors with CMOS Inverters", Elect. Design 13, Jun. 21, 1975, p. 102.

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