IRF540NS/IRF540NL 400 15V ID TOP 6.5A 11.3A BOTTOM 16A L DRIVER VDS 300 RG D.U.T + - VDD I 200 AS A 20V t 0.01 p Ω Fig 12a. Unclamped Inductive Test Circuit 100 V(BR)DSS AS tp E , Single Pulse Avalanche Energy (mJ) 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 + VGS V D.U.T. DS Q - 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