ISOW1432: Requisition for Junction to Case (bottom) thermal resistance and Case Temp (°C) Max of ISOW1432BDFMR

Hi Shibijith,

Thanks for reaching out. Below are my inputs:

Shibijith C said:

Case Temp (°C) Max of ISOW1432BDFMR

This really depends on the mode of operation, but assuming worst case load and mode operation, case temperature can reach as high 85C when operating at room temp.

Shibijith C said:

Junction to Case (bottom) thermal resistance

We don't characterize for bottom side case temperature in our datasheet, hence we can not quote a RθJC(bot) number.

However, I assume your aim is to guess the PCB temperature beneath the device. If that is the case, please make use of RθJB and ΨJB parameters in the datasheet. 

For more depth understanding on these parameters, i recommend to go through the following appnote on semiconductor thermal metrics: https://www.ti.com/lit/an/spra953d/spra953d.pdf?ts=1739179268525