Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1998-09-22
1999-11-09
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327534, 327589, 363 59, 307110, G05F 110, G05F 302
Patent
active
059822244
ABSTRACT:
A charge pump circuit comprises an input terminal for receiving an input voltage, an output terminal for providing an output voltage, and a plurality of pump stages connected in series between the input and output terminals and alternately coupled to first and second clock signals having complementary states. Each of the pump stages includes a transistor having a gate terminal, a source terminal, a drain terminal, and a bulk terminal, and a capacitor connected between the gate terminal of the transistor and a corresponding one of the clock signals. Each bulk terminal is biased by the voltage of a previous pump stage driven by the same clock signal, so that each of the corresponding threshold voltages of the transistors is suppressed to a voltage sufficient for generating a higher voltage on a low power supply voltage regardless of body effect.
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Dickson, "On-Chip High-Voltage Generation in MNOS Integrated Circuits Using an Improved Voltage Multiplier Technique," IEEE Journal of Solid-State Circuits, vol. SC-11, No. 3, pp. 374-378, Jun. 1976.
Chung Hwi-Taek
Suh Kang-Doeg
Callahan Timothy P.
Luu An T.
Samsung Electronics Co,. Ltd.
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