IGBT GATE CURRENT SLOPE MEASURE TO ESTIMATE MILLER PLATEAU
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 11, 2018
app pub date -
Jun 27, 2017
filing date -
Jul 11, 2016
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
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.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- H03K Class
- 21.67 % this patent is cited more than
- 7 Age