Pulse calculation formula

Equation:

ZTHδ = RTH · + ZTHtp (1 - δ)

where δ = tP/T

Figure 38. Thermal fitting model for Octapak

Note:

The fitting model is a simplified thermal tool and is valid for transient evolutions where the embedded protections

(power limitation or thermal cycling during thermal shutdown) are not triggered.

Table 15. Thermal parameters

Area/island (cm2)

Footprint

2

8

4L

R1 (°C/W)

0.01

0.01

0.01

0.01

R2 (°C/W)

0.5

0.5

0.5

0.5

R3 (°C/W)

1.6

1.6

1.6

1.6

R4 (°C/W)

10

10

10

2.5

R5 (°C/W)

28

20

12

5

R6 (°C/W)

36

26

18

6

C1 (W.s/°C)

0.001

0.001

0.001

0.001

C2 (W.s/°C)

0.0018

0.0018

0.0018

0.0018

C3 (W.s/°C)

0.11

0.11

0.11

0.11

C4 (W.s/°C)

0.6

0.6

0.6

0.8

C5 (W.s/°C)

0.8

1.4

2.2

3

C6 (W.s/°C)

3

6

9

25

VN7004SLH

Octapak thermal data

DS13681 - Rev 2

page 25/35