IRF9540NS/LPbF
RD
VDS
VGS
24
20
16
12
8
D.U.T.
RG
-
+
VDD
-10V
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
Fig 10a. Switching Time Test Circuit
t
t
r
t
t
f
d(on)
d(off)
V
GS
10%
4
0
25
50
75
100
125
150
90%
V
T
, Case Temperature (°C)
DS
C
Fig 9. Maximum Drain Current vs.
Fig 10b. Switching Time Waveforms
Case Temperature
10
1
0.1
D = 0.50
0.20
0.10
0.05
R1
R1
R2
R2
R3
R3
τi (sec)
Ri (°C/W)
τ
J τJ
τ
τC
0.1737838 0.0000610
0.4335992 0.0019590
0.4921007 0.0260060
1τ1
Ci= τi/Ri
τ
τ
2 τ2
3τ3
0.02
0.01
0.01
0.001
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
SINGLE PULSE
( THERMAL RESPONSE )
1E-006
1E-005
0.0001
0.001
0.01
0.1
t
, Rectangular Pulse Duration (sec)
1
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
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