IRF634N, IRF634NL, IRF634NS, SiHF634N, SiHF634NL, SiHF634NS
Vishay Siliconix
10
1 0 − 0.5
0.2
0.1
0.1
0.05
0.02
0.01
10-2
10-5
91033_11
PDM
Single Pulse
(Thermal Response)
t1
t2
Notes:
1. Duty Factor, D = t1/t2
2. Peak Tj = PDM x ZthJC + TC
10-4
10-3
10-2
0.1
t1, Rectangular Pulse Duration (s)
Fig. 11 - Maximum Effective Transient Thermal Impedance, Junction-to-Case
15 V
VDS
L
Driver
RG
20 V
tp
D.U.T
IAS
0.01 Ω
+
- VDAD
Fig. 12a - Unclamped Inductive Test Circuit
VDS
tp
IAS
Fig. 12b - Unclamped Inductive Waveforms
www.vishay.com
6
200
ID
Top 2.0 A
160
3.4 A
Bottom 4.8 A
120
80
40
0
25
50
75 100 125 150 175
91033_12c
Starting TJ, Junction Temperature (°C)
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
Document Number: 91033
S-Pending-Rev. A, 19-Jun-08