VN920-E / VN920B5-E / VN920SO-E
Figure 29. SO-16L Thermal Impedance Junction Ambient Single Pulse
ZTH (°C/W)
100
0.5 cm2
6 cm2
10
1
0.1
0.01
0.0001 0.001
0.01
0.1
1
Time (s)
10
100 1000
Figure 30. Thermal fitting model of a single
channel HSD in SO-16L
Tj C1
C2
C3
C4
C5
C6
R1
R2
R3
R4
R5
R6
Pd
T_amb
Pulse calculation formula
THδ = RTH ⋅ δ + ZTHtp(1 – δ)
where δ = tp ⁄ T
Table 14. Thermal Parameter
Area/island (cm2)
R1 (°C/W)
R2 (°C/W)
R3 ( °C/W)
0.5
6
0.02
0.1
2.2
R4 (°C/W)
R5 (°C/W)
R6 (°C/W)
C1 (W.s/°C)
C2 (W.s/°C)
C3 (W.s/°C)
C4 (W.s/°C)
C5 (W.s/°C)
C6 (W.s/°C)
12
15
35
20
0.0015
7.00E-03
1.50E-02
0.14
1
5
8
17/24