Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2008-02-28
2009-02-03
Tang, Minh N (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S765010, C324S762010
Reexamination Certificate
active
07486099
ABSTRACT:
A method for testing a power converter having at least one power transistor is disclosed. The method may include receiving a power transistor test request, and resetting a fault flag for each power transistor, wherein the fault flag indicates a fault status associated with a corresponding power transistor. The method may also include applying a gate driver signal to each power transistor, receiving a feedback signal from each power transistor, and determining a difference between the gate driver signal and the feedback signal associated with a respective power transistor. The method may further include identifying a power transistor fault if the difference exceeds a threshold profile, and setting the fault flag for the power transistor on which a power transistor fault is identified.
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Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner
Tang Minh N
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