IRF3205PbF 500 J) I 15V m D TOP 25A gy ( 44A 400 ner BOTTOM 62A L DRIVER VDS 300 R anche E G D.U.T + - VDD val IAS A 20V t 0.01 200 p Ω ulse A Fig 12a. Unclamped Inductive Test Circuit e P ingl 100 S V(BR)DSS , t AS p E 025 50 75 100 125 150 175 Starting T , Junction Temperature ( C ° ) J Fig 12c. Maximum Avalanche Energy Vs. Drain Current IAS Fig 12b. Unclamped Inductive Waveforms Current Regulator Same Type as D.U.T. 50KΩ .2µF 12V QG .3µF + 10 V VDS Q D.U.T. - GS QGD VGS VG 3mA I I G D Charge Current Sampling Resistors Fig 13a. Basic Gate Charge Waveform Fig 13b. Gate Charge Test Circuit 6 www.irf.com