IRF644 Datasheet, PDF (6/8 Pages) International Rectifier – Power MOSFET(Vdss=250V, Rds(on)=0.28ohm, Id=14A)

IRF644, SiHF644
Vishay Siliconix
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
10 V
Q_GS
V_G
Q_G
Q_GD
Charge
Fig. 13a - Basic Gate Charge Waveform
Current regulator
Same type as D.U.T.
12 V
50 kΩ
0.2 µF
0.3 µF
+
D.U.T. - ^VDS
V_GS
3 mA
I_G
I_D
Current sampling resistors
Fig. 13b - Gate Charge Test Circuit
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Document Number: 91039
S-81241-Rev. B, 07-Jul-08