Instantaneous power limiting circuit

Details Instantaneous power limiting circuit Instantaneous power limiting circuit

1989-05-11

1991-06-04

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307270, 323312, H03K 301, H03K 326

Patent

active

050216821

ABSTRACT:
A DMOST driver circuit responds to the current flowing in the DMOST and the voltage appearing across it. The current and voltage are multiplied together in a g.sub.m amplifier which is coupled to drive a first input of a diff-amp. The diff-amp has its second input coupled to a source of reference potential. The diff-amp output is coupled to the DMOST gate to create a stabilizing negative feedback loop. The first diff-amp input is also coupled to a reference potential related threshold voltage so that the drive to the DMOST will be controlled by the DMOST power dissipation multiplied by a predetermined constant which is chosen to provide a safe dissipation level.

REFERENCES:
patent: 4553044 (1985-11-01), Bittner
patent: 4559458 (1985-12-01), Ma
patent: 4633095 (1986-12-01), Komatu
patent: 4647793 (1987-03-01), Davis

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