Floating positive circuit breaker

Details Floating positive circuit breaker Floating positive circuit breaker

1996-09-25

1998-08-11

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 18, H02H 300

Patent

active

057935963

ABSTRACT:
A circuit breaker IC adapted for controlling an external NMOS switch coupled between a supply voltage and a load referenced to ground, with the circuit breaker being isolated from ground. With this arrangement, the voltage across the circuit breaker is limited, thereby permitting use of a low voltage integrated circuit fabrication process. The circuit breaker includes a sensor for sensing load current through the switch and providing an output signal indicative of the load current, a charge pump providing a supply voltage and an amplifier responsive to the sensor output signal and to the charge pump supply voltage for providing a drive signal to control the switch.

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Best Ideas for Design, Charge Pump Generates Gate Drive, Chester Simpson, 3360 Tracy Dr., Santa Clara, CA 95051; (408) 296-1925 Sep. 1995.
Unitrode Integrated Circuits Corp.,"Negative Voltage Circuit Breaker", UCC1913, data sheet, Jan. 1995, pp. 6-442 thru 6-447.
Unitrode Integrated Circuits Corp., "Programmable Electronic Circuit Breaker", UCC3912, data sheet, Jan. 1995, pp. 6-437 thru 6-441.

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