Negative charge pump using positive high voltage

Details Negative charge pump using positive high voltage Negative charge pump using positive high voltage

1997-10-17

2000-09-12

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327537, G05F 302

Patent

active

061183296

ABSTRACT:
This invention diecloses a negative charge pump comprises a negative charge pump comprises; a positive charge pump to output a positive voltage through a first output terminal in response to a first clock signal and a second clock signal; a transfer circuit having a second output terminal, in which the transfer circuit acts to transfer the positive voltage to the second output terminal or break the positive voltage in response to a third clock signal; a negative charge pump circuit having a third output terminal which maintains a first potential during the second output terminal maintains the positive voltage or maintains a second potential in response to a fourth clock signal during the positive voltage is not supplied to the second output terminal; and an output circuit having a fourth output terminal, in which the output circuit acts to charge positive charges which exist in an external equipment to the third output terminal through the fourth output terminal when the first potential changes to the second potential.

REFERENCES:
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patent: 5041739 (1991-08-01), Goto
patent: 5237209 (1993-08-01), Brewer
patent: 5399928 (1995-03-01), Lin et al.
patent: 5461557 (1995-10-01), Tamagawa
patent: 5493543 (1996-02-01), Kamens
patent: 5532640 (1996-07-01), Okunaga

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