Charge pump circuit control system

Details Charge pump circuit control system Charge pump circuit control system

2007-04-30

2009-08-04

Chang, Joseph (Department: 2817)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C331S057000

Reexamination Certificate

active

07570104

ABSTRACT:
The invention discloses a charge pump circuit control system comprising a level detector, a ring oscillator, and a charge pump circuit. The level detector detects the variation of the output voltage of the charge pump circuit for generating a control signal. The ring oscillator generates a plurality of clock signals according to the control signal, and the charge pump circuit generates the output voltage according to the plurality of clock signals.

REFERENCES:
patent: 5519360 (1996-05-01), Keeth
patent: 2003/0062948 (2003-04-01), Notani et al.
patent: 2006/0114731 (2006-06-01), Park et al.
patent: 2006/0119417 (2006-06-01), Hsu et al.
patent: 2007/0109059 (2007-05-01), Im et al.
patent: 2007/0147140 (2007-06-01), Byeon et al.

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