On-chip high voltage generator and regulator in an integrated ci

Details On-chip high voltage generator and regulator in an integrated ci On-chip high voltage generator and regulator in an integrated ci

1990-04-27

1991-04-09

Wong, Peter S.

Electric power conversion systems

Current conversion

With voltage multiplication means

363 68, 323281, 357 51, H02M 725

Patent

active

050069748

ABSTRACT:
An EEPROM constructed in accordance with our invention includes a voltage multiplier for generating an erase voltage and a voltage regulator circuit for controlling the magnitude of the erase voltage. The voltage regulator circuit includes means for providing a first voltage proportional to the erase voltage, means for providing a reference voltage on a reference voltage lead, and means for controlling the voltage multiplier circuit so that if the first voltage is less than the reference voltage, the voltage multiplier circuit will increase the erase voltage, but if the first voltage is greater than the reference voltage, the voltage multiplier will not continue to increase the erase voltage. The voltage multiplier includes novel capacitors and transistors constructed using standard EEPROM processing to withstand high voltages without breaking down.

REFERENCES:
patent: 3845331 (1974-10-01), Luscher
patent: 4167035 (1979-09-01), Willard
patent: 4559548 (1985-12-01), Iizuka et al.

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