Short circuit limit circuit with temperature-dependent current l

Details Short circuit limit circuit with temperature-dependent current l Short circuit limit circuit with temperature-dependent current l

1993-09-24

1995-02-14

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361 93, H03K 1730

Patent

active

053900693

ABSTRACT:
A current limit circuit is provided, with a DMOS output transistor DM2. A second DMOS transistor DM1 is provided in parallel with DM2. A pair of matched resistors R12 and R13 are connected to a reference current source and to DM1. If the voltage across R13 exceeds the voltage across R12, a control circuit sinks current away from DM1.

REFERENCES:
patent: 3796943 (1974-03-01), Nelson et al.
patent: 3845405 (1974-10-01), Leidich
patent: 4553048 (1985-11-01), Bynum et al.
patent: 4800331 (1989-01-01), Vesce et al.

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