Voltage/current conversion circuit

Details Voltage/current conversion circuit Voltage/current conversion circuit

1997-09-30

1999-03-16

Wong, Peter S.

Electric power conversion systems

Current conversion

Constant current to constant voltage or vice versa

323316, H02M 700

Patent

active

058837981

ABSTRACT:
A voltage/current (v/c) conversion circuit is designed for use in integrated circuit devices. Conventional designs of v/c conversion circuits require a relatively high value of load resistor, i.e. a steep v/c conversion slope, to generate high levels of output current. In place of the high load resistor which is expensive to fabricate with IC fabrication techniques, the source-drain resistance in an n-type MOSFET is utilized, and the output current level is adjusted by adjusting the potential of a bias input circuit supplied from the gate potential in an n-type MOSFET. The proposed configuration is ideally suited to IC fabrication processes, and the circuit is useful in a many applications requiring a wide range of high current levels from a conversion circuit having a low v/c conversion factor.

REFERENCES:
patent: 3906332 (1975-09-01), Keller
patent: 4399374 (1983-08-01), Boeke
patent: 4453121 (1984-06-01), Noufer
patent: 4727309 (1988-02-01), Vajdic et al.

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