Power MOSFET circuit including short circuiting means for detect

Details Power MOSFET circuit including short circuiting means for detect Power MOSFET circuit including short circuiting means for detect

1991-10-16

1994-10-18

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307571, 307574, 307254, 307270, 257262, 257263, H03K 17687, H03K 1760, H03K 301

Patent

active

053571576

ABSTRACT:
In a high side switching circuit for switching, an inductive load with a power MOSFET on and off, whose drain is connected with a power source and whose source is connected with the inductive load, a short-circuiting means for preventing undesired turn-on of the power MOSFET by establishing a short circuit between the gate and source of the power MOSFET when the source potential of the power MOSFET becomes lower than the ground potential. Preferably, the short-circuiting means comprises a field-effect or bipolar transistor whose control electrode is grounded.

REFERENCES:
patent: 4992836 (1991-02-01), Sicard
patent: 5010439 (1991-04-01), Zisa et al.
patent: 5028811 (1991-07-01), le Roux et al.

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