Method for driving a semiconductor switch and circuit...

Details Method for driving a semiconductor switch and circuit... Method for driving a semiconductor switch and circuit...

2008-03-04

2008-03-04

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

C361S093100, C361S093700, C361S093900, C361S100000, C361S103000

Reexamination Certificate

active

07339773

ABSTRACT:
A method for driving a semiconductor switch with load current limiting and thermal protection whose maximum load current is limited and which switches off when a predetermined upper temperature is exceeded and switches on again when a predetermined lower temperature is crossed. The semiconductor switch is operated in a normal mode and a fault mode. The semiconductor switch is driven in the fault mode once the predetermined temperature is exceeded; and the load current is limited to a first maximum value in a normal mode and a second maximum value, which is lower than the first maximum value, in a fault mode. Such a circuit configuration with a semiconductor switch has a protection circuit and a sensor circuit.

REFERENCES:
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patent: 5373205 (1994-12-01), Busick et al.
patent: 5757203 (1998-05-01), Brown
patent: 6052268 (2000-04-01), Thomas
patent: 6781357 (2004-08-01), Balakrishnan et al.
patent: 0 373 694 (1990-06-01), None
Infineon Technologies AG: “PROFET Data Sheet BTS 443 P”, dated Jan. 23, 2001, pp. 1-13.

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