Datasheet

VNH5180A-E Package and PCB thermal data
Doc ID 17074 Rev 6 23/31
Figure 16. Chipset configuration
Figure 17. Auto and mutual R
thj-amb
vs PCB copper area in open box free air
condition
4.1.1 Thermal calculation in clockwise and anti-clockwise operation in
steady-state mode
CHIP 1
R
thA
CHIP 2
CHIP 3
R
thB
R
thC
R
thAB
R
thAC
R
thBC
0
10
20
30
40
50
60
70
80
0123456789
cm
2
of Cu Area (refer to PCB layout)
°C/W
RthA
RthB = RthC
RthAB = RthAC
RthBC
Table 18. Thermal calculation in clockwise and anti-clockwise operation in steady-
state mode
HS
A
HS
B
LS
A
LS
B
T
jHSAB
T
jLSA
T
jLSB
ON OFF OFF ON
P
dHSA
x R
thHS
+ P
dLSB
x R
thHSLS
+ T
amb
P
dHSA
x R
thHSLS
+
P
dLSB
x R
thLSLS
+ T
amb
P
dHSA
x R
thHSLS
+ P
dLSB
x R
thLS
+ T
amb
OFF ON ON OFF
P
dHSB
x R
thHS
+ P
dLSA
x R
thHSLS
+ T
amb
P
dHSB
x R
thHSLS
+
P
dLSA
x R
thLS
+ T
amb
P
dHSB
x R
thHSLS
+ P
dLSA
x R
thLSLS
+ T
amb