Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2007-10-23
2009-06-16
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S377000, C361S057000, C323S289000
Reexamination Certificate
active
07548097
ABSTRACT:
One embodiment of the invention includes a power driver system. The power driver system comprises a power transistor that is activated to provide power to a load and a switching circuit configured to control the power transistor based on a control signal. The power driver system further comprises a control circuit configured to detect a flyback current from the load upon deactivation of the power transistor and to cause the switching circuit to steer the flyback current from a first flyback current path to a second flyback current path in response to detecting the flyback current path. The second flyback current path can have an impedance that is greater than the first flyback current path.
REFERENCES:
patent: 5115369 (1992-05-01), Robb et al.
patent: 6166893 (2000-12-01), Shen et al.
patent: 6804096 (2004-10-01), Nagata
patent: 7035120 (2006-04-01), Tobita
Dake Luthuli E.
Wendt Michael Herbert
Wicht Bernard
Brady W. James
Kempler William B.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
Wells Kenneth B.
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