VN7050AJ Datasheet, PDF (39/55 Pages) STMicroelectronics – High-side driver with MultiSense analog feedback for automotive applications

VN7050AJ, VN7050AS
Package and PCB thermal data
Figure 45: PowerSSO-16 Rthj-amb vs PCB copper area in open box free air condition (one
channel on)
RTHjamb
90
RTHjamb
80
70
60
50
40
30
0
2
4
6
8
10
RTHj_amb on 4Layer PCB: 24.5°C/W
GAPGCFT01249
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
GAPGCFT01250
DocID027397 Rev 3
39/55