Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1993-10-19
1995-08-01
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327535, 327 78, 327 63, 361 18, 361 42, G05F 1573, H02H 3087
Patent
active
054382866
ABSTRACT:
A circuit for the detection of an open load for a power MOS transistor is designed to operate in a switching mode. The MOS transistor is partitioned into two transistors disposed in parallel. The second transistor has a resistance in the conductive state higher than the first transistor. The circuit includes circuitry for enabling only the second transistor when the current is within a low value range, and circuitry for detecting an open load when the circuit is operating within the low current range.
REFERENCES:
patent: 4528608 (1985-07-01), Andersson et al.
patent: 5004970 (1991-04-01), Baron
patent: 5079456 (1992-01-01), Kotowski et al.
patent: 5105101 (1992-04-01), Hinooka
patent: 5187632 (1993-02-01), Blessing
patent: 5220207 (1993-06-01), Kovalcik et al.
patent: 5272392 (1993-12-01), Wong et al.
Pavlin Antoine
Siaudeau Jean-Louis
Callahan Timothy P.
Le Dinh
SGS-Thomson Microelectronics S.A.
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