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 ISL9R860P2, ISL9R860S3ST — STEALTH? Diode Test Circuits and Waveforms Figure 12. trr Test Circuit Figure 13. trr Waveforms and Definitions Figure 14. Avalanche Energy Test Circuit Figure 15. Avalanche Current and Voltage Waveforms RG L VDD - MOSFET CURRENT SENSE DUT VGE t1 t2 VGE AM PLITUDE AND RG CO NTROL diF/dt t1 AND t2 CONT ROL IF + dt diF IF trr ta tb 0 IRM 0.25 IRM DUT CURRENT SENSE + LR VDD R < 0.1? EAVL = 1/2LI 2 [V R(AVL)/(VR(AVL) - V DD)] Q1 = IGBT (BV CES > DUT V R(AVL)) - Q1 I = 1A L = 40mH VDD = 50V IV t0 t1 t2 IL VAVL t IL ?2001 Fairchild Semiconductor Corporation ISL9R860P2, ISL9R860S3ST Rev. C1 www.fairchildsemi.com 5 |