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TPSM53602: Thermal performance

Part Number: TPSM53602

Hi team

 

Our customer measured the surface temperature using IR thermography in the below condition.

Is it correct the thought to estimate Tj ?

 

Tj = Tj = Ψjt x Ploss+ Tc

Ψjt:1.0[℃/W]

 = 1.0 x 1.62 + 48.8

 = 50.42[℃]

 

Measurement result = 48.8 [℃]

 

<The conditions>

 

Input

Vin[Vrms]:23.71

Iin[Arms]:0.346

Pin[W]:8.20

 

Output

Vout[Vrms]:6.90

Iout[Arms]:0.953

Pout[W]:6.58

 

Power consumption

Ploss:1.62 (=Pin-Pout)

Michiaki