Datasheet

Package and PCB thermal data VND5050AJ-E / VND5050AK-E
28/37 Doc ID 12272 Rev 10
Figure 34. PowerSSO-24™ Thermal impedance junction ambient single pulse (one
channel on)
Equation 2: pulse calculation formula
where δ = t
P
/T
Figure 35. Thermal fitting model of a double channel HSD in PowerSSO-24™
(b)
b. 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.
Z
THδ
R
TH
δ Z
THtp
1 δ–()+⋅=