Package Thermal Characteristics for i.MX27

[ko-hey]

Hi all

Does someone have thermal characteristics data for i.MX27 ?

I want a data which likes table 16 of IMX25AEC.pdf for calculation.

Ko-hey

[joanxie]

I upload the 19X19 imx31 data, but this is the same as imx27.

[ko-hey]

Hi Joan Xie

Let me confirm one more thing.

What is the junction temperature for i.MX27 ?

The datasheet shows only temperature like below.

So I can't clarify whether the temperature is junction temperature or not.

Furthermore, according to the following product selector, it shows ambient operating temperature.

As a result, the temperature which shows in table 1 of datasheet isn't junction temperature.

So please tell me the junction temperature for i.MX27.

Ko-hey

[ko-hey]

Could someone follow and support this question ?

Ko-hey

[joanxie · Accepted solution]

yes, temperature in the datasheet is the ambient temperature

as Tj (junction temperature), R (thermal  resistance, that may be needed for thermal estimations are not provided.    Also thermal parameters are not specified, but they are taken  into account implicitly.  max Tj = max Ta + R * Pd,  where Tj - junction temperature ; Ta - ambient temperature from the datasheet ; R - thermal resistance ;  Pd - power dissipation in package.  For i.MX27 production technology  the junction temperature is ~105C.