MPM54524 thermal model (.pdml format)

[tim_liu]

Hi Sir

Could MPS provide the thermal model (.pdml format) or any tool for thermal simulation? Or MPS can provide the power loss as setting below?

1. Vin = 12V
2. Vout = 3.3V
3. Switching frequency = 750kHz
4. Load current is 2.5A/3.3A for each loop

I just found this snapshot from the spec, but this setting is not what we want.

[Krishan.FAE]

Hey Tim,

It looks as if the MPM54524 doesn’t have any curves characterized at Vin = 12V, Vout = 3.3V, and where Fsw = 750kHz.

However, generally the switching losses increase with a higher switching frequency, so it would be expected that the power loss would be where Vout = 3.3V @ Fsw = 750kHz would be somewhere in between the yellow and blue curves. You can use the data here as a worst-case approximation.

Of course, you could try running some simulations using the MPSmart tool as well. You can find the model online under the design tab on the following link:
MPM54524 | Fully Integrated, 16V, Quad 5A Output Power Module with I2C Interface | MPS

Hope this provided some insight.