Datasheet

VND5050AJ-E / VND5050AK-E Package and PCB thermal data
Doc ID 12272 Rev 10 25/37
Figure 30. PowerSSO-12™ thermal impedance junction ambient single pulse (one
channel on)
Equation 1: pulse calculation formula
where δ = t
P
/T
Figure 31. Thermal fitting model of a double channel HSD in PowerSSO-12™
(a)
a. 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.
0,1
1
10
100
0,0001 0,001 0,01 0,1 1 10 100 1000
Time (s)
ZTH (°C/ W)
Footprint
8 cm
2
2 cm
2
Z
THδ
R
TH
δ Z
THtp
1 δ–()+⋅=