IRF3205 500 1 5 V ID TOP 25A 44A 400 BOTTOM 62A L D R IV E R V D S 300 R G D .U .T + V - D D IA S A 20V t 0 .0 1 200 p Ω Fig 12a. Unclamped Inductive Test Circuit 100 V (B R )D S S AS tp E , Single Pulse Avalanche Energy (mJ) 0 25 50 75 100 125 150 175 Starting T , Junction Temperature ( C) ° J Fig 12c. Maximum Avalanche Energy Vs. Drain Current I A S Fig 12b. Unclamped Inductive Waveforms Current Regulator Same Type as D.U.T. 50KΩ .2µF 12V QG .3µF + 10 V V D.U.T. DS - QGS 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
