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System and method for testing power transistors



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Patent 7486099
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Document Number
US Patent 7486099
Issued Date
February 3, 2009
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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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Number of Claims:
20
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Owner
Caterpillar Inc. (Peoria, IL)
Published
February 3, 2009
Application Number
12/073,030
Filed
February 28, 2008
US Classification
324/768   324/765 324/769
Int'l Classification
G01R   31/26   (20060101)  
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