H-bridge circuit

Details H-bridge circuit H-bridge circuit

2011-03-08

2011-03-08

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S494000, C327S587000

Reexamination Certificate

active

07902884

ABSTRACT:
An H-bridge circuit includes a lower-arm field-effect transistor and a current supplying element that turns on when the drain of the lower-arm field-effect transistor is negatively biased due to regenerative current. When turned on, the current supplying element conducts current from the source to the drain of the lower-arm field-effect transistor, in parallel with a parasitic diode inherent in the lower-arm field effect transistor. The current supplying element competes with other parasitic elements that conduct current from peripheral circuitry to the drain of the lower-arm field-effect transistor, thereby reducing the amount of such current drawn through the peripheral circuitry and lessening the impact of the regenerative current on the peripheral circuits.

REFERENCES:
patent: 5952856 (1999-09-01), Horiguchi et al.
patent: 6147545 (2000-11-01), Marshall
patent: 6545514 (2003-04-01), Barrow
patent: 7592852 (2009-09-01), Hsieh et al.
patent: 05-236797 (1993-09-01), None
patent: 08-223993 (1996-08-01), None

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