Hi ADI expert,
According to ADV7604 datasheet in the package thermal performance section, the temperature formula as blow, so I would like to calculate Ts maximum limited.
Tj=125 degree.
T Ambient =70 degree max.
Wtotal = (1.8Vx88.2mA)+(0.05x3.3Vx204.5mA)+(1.8Vx121.9mA)+(1.8Vx258.3mA)+(1.8Vx303.7mA)+(3.3Vx167mA)=1.975W
TJ 125C = Ts+(0.3Cx1.975W); Ts is 124 degree.
Since to T junction 125 and T ambient 70 value is huge difference between them, T surface result seems not right.
Any wrong for this calculation?
Thanks.
Best regards.
RayW.
