9020 Datasheet, PDF (2/25 Pages) Fairchild Semiconductor – IGBT Basic II

Section II - IGBT Protections
1. Introduction - IGBT Failure Mechanism
2. FBSOA and Short Circuit Destruction
A. FBSOA
3. Types of Short Circuit
A. Type II: Hard Switch Fault (HSF)
B. Type I: Fault under load (FUL)
4. Short circuit protection
A. Protecting against over-current condition
B. Protecting against short circuit current condition
C. Short Circuit Protection Scheme
a. Detection through resistance
b. Current Transformer
c. De-saturation detection
5. RBSOA
6. Over-voltage Protection
A. Over-voltage protection
7. Snubber circuit
* Reference
2
Rev. A, April 2002