Level shift circuit with common mode rejection

Details Level shift circuit with common mode rejection Level shift circuit with common mode rejection

1991-03-01

1992-04-14

Mis, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072961, 363 56, 363131, H03K 3013, H02M 753

Patent

active

051050994

ABSTRACT:
A system includes an upper driver circuit connected between a first source of voltage and a first point of reference potential, for driving the gate of a first switching device having a main current path connected between a second source of operating voltage and the first point of reference potential. The system further includes a lower driver circuit connected between a third source of operating voltage and a second point of reference potential, for driving the gate of a second switching device having a main current path connected between the first and second points of reference potential. Detection circuitry is included for detecting a common-mode dv/dt induced signal to disable the sensing of valid "ON" and "OFF" signals by the upper circuit, to prevent false triggering of the upper circuit.

REFERENCES:
patent: 4078247 (1978-03-01), Albrecht

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