Circuit for multiplying a pump clock voltage

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307110, 307529, 307264, 328160, H03K 501, H03K 424

Patent

active

047345993

ABSTRACT:
A voltage multiplier circuit is disclosed. The circuit comprises three p-channel MOS transistors and three capacitors. When these elements are connected to properly phased transfer and pump clock signals of positive polarity, the circuit generates a negative output voltage which is roughly equal in magnitude to the peak-to-peak voltage of the pump clock. One of the transistors couples the output node to the circuit input node, and is clocked by the transfer clock so as to isolate the input node from the output node when the output node potential is lower than the input node potential. Several of the circuits may be cascaded to produce a large negative supply from a small positive supply. The circuit is advantageously employed to provide the programming signal supply for EEPROM devices.

REFERENCES:
patent: 3975671 (1976-08-01), Stoll
patent: 4382194 (1983-05-01), Nakano et al.
patent: 4398100 (1983-08-01), Tobita et al.
patent: 4485433 (1984-11-01), Topich

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