Method and apparatus to remotely sense the temperature of a...

Miscellaneous active electrical nonlinear devices – circuits – and – External effect – Temperature

Reexamination Certificate

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C327S513000

Reexamination Certificate

active

07113019

ABSTRACT:
Apparatus for indirectly sensing the temperature of a power MOS device comprising a power MOS device having a current sense circuit for sensing the current in the power MOS device, a circuit for producing a voltage related to the drain-source voltage of the power MOS device, a comparator coupled to receive at a first input the voltage related to the drain-source voltage of the power MOS device and at a second input a voltage related to the current in the power MOS device, the comparator generating an overtemperature protection signal when a predetermined inequality between the voltages at the first and second inputs to the comparator occurs.

REFERENCES:
patent: 5796278 (1998-08-01), Osborn et al.

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