IGBT gate current slope measure to estimate miller plateau

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United States of America

PATENT NO 10516392
SERIAL NO

15633953

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Importance

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Abstract

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A method and apparatus are provided for controlling a drive terminal of a power transistor by applying a turn-off voltage to the drive terminal at a turn-off time, measuring a gate current at the drive terminal to detect a predetermined gate current slope, determining a first time increment after the turn-off time when the predetermined gate current slope is detected, determining a second time increment which is proportional to the first time increment and which expires within a Miller plateau for the power transistor, and lowering the gate current at the drive terminal to a predetermined current level upon expiration of the second time increment in order to reduce overvoltages at the power transistor.

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Patent Owner(s)

  • NXP USA, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sicard, Thierry Auzeville tolosane, FR 48 294

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