VND7140AJ Datasheet, PDF (38/47 Pages) STMicroelectronics – Double channel high-side driver with MultiSense analog feedback for automotive applications

Package and PCB thermal data
VND7140AJ
Figure 45: Rthj-amb vs PCB copper area in open box free air condition (one channel on)
RTHjamb
100
90
RTHjamb
80
70
60
50
40
30
0
2
4
6
8
10
Figure 46: PowerSSO-16 thermal impedance junction ambient single pulse (one channel on)
Z_TH (°C/W)
100
10
1
0.1
0.0001
0.001
0.01
0.1
1
Time (s)
Equation: pulse calculation formula
ZTHδ = RTH · δ + ZTHtp (1 - δ)
where δ = tP/T
Cu=foot print
Cu=2 cm2
Cu=8 cm2
4 Layer
10
100
1000
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DocID027398 Rev 2