Rainbow Electronics IRFTS8342TRPBF - Manual (Page 6)

IRFTS8342PbF
6 www.irf.com
Fig 18b. Unclamped Inductive Waveforms Fig 18a. Unclamped Inductive Test Circuit
tp
V (BR)DSS
I
AS
RG
IAS
0.01  tp
D.U.T
L
VDS
+
- VDD
DRIVER
A
15V
20V
Fig 19a. Switching Time Test Circuit
Fig 19b. Switching Time Waveforms
V
GS
V
DS
90%
10%
t
d(on)
t
d(off)
t
r
t
f
Fig 17a. Gate Charge Test Circuit Fig 17b. Gate Charge Waveform
Vds
Vgs
Id
Vgs(th)
Qgs1 Qgs2 Qgd Qgodr
1K
VCC
DUT
0
L
S
V
DS
Pulse Width µs
Duty Factor 
R
D
V
GS
R
G
D.U.T.
10V
+
-
V
DD
V
GS