Half-bridge high voltage gate driver providing protection of...

Details Half-bridge high voltage gate driver providing protection of... Half-bridge high voltage gate driver providing protection of...

2005-02-22

2005-02-22

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

C327S310000, C327S312000, C327S382000

Reexamination Certificate

active

06859087

ABSTRACT:
A gate drive integrated circuit for switching power transistors using an external controller includes a gate driving capability and low quiescent current and allows use of a bootstrap supply technique for providing the logic supply voltage. The gate driver integrated circuit detects power transistor desaturation, protecting a desaturated transistor from transient over voltages by smoothly turning off the desaturated transistor via a soft shutdown sequence. A fault control circuit of the gate driver integrated circuit manages protection of supply under-voltage and transistor desaturation and is capable of communicating with a plurality of gate driver integrated circuits in a multi-phase system using a dedicated local network.

REFERENCES:
patent: 6473320 (2002-10-01), Randazzo

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