IRF840LCS Datasheet, PDF (6/10 Pages) International Rectifier – Power MOSFET(Vdss=500V, Rds(on)=0.85ohm, Id=8.0A)

IRF840LCS/LCL
15V
VDS
L
D R IV E R
RG
20V
tp
D .U .T
I_{A S}
0 .0 1Ω
+
- ^VD D
A
Fig 12a. Unclamped Inductive Test Circuit
V_(BR)DSS
tp
Fig 12c. Maximum Avalanche Energy
Vs. Drain Current
I_AS
Fig 12b. Unclamped Inductive Waveforms
Q_G
10 V
Q_GS
Q_GD
V_G
Charge
Fig 13a. Basic Gate Charge Waveform
6
Current Regulator
Same Type as D.U.T.
50KΩ
12V
.2µF
.3µF
+
D.U.T. -V^DS
V_GS
3mA
I_G
I_D
Current Sampling Resistors
Fig 13b. Gate Charge Test Circuit
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