TPSF12C1QEVM: Related application questions

user6055081

Part Number: TPSF12C1QEVM
Other Parts Discussed in Thread: TPSF12C1

Tool/software:

I hope Timothy Hegarty can help answer this question. I used the latest version of SIMPLIS 9.2B, which has a built-in LISN simulation module. I tested the EMI conduction results with and without TPSF12C1 enabled. It is true that without TPSF12C1, there will be higher conducted EMI.

SIMPLIS simulation file: www.asuswebstorage.com/.../

But I am curious about how to use the common choke impedance measurement results to place the measurement results into the Excel in the design tool to generate a simulation equivalent model? (I don't need to know the detailed conversion method, just how to convert quickly)

And how to use SIMPLIS to run CM and DM impedance? Like this picture, is it convenient to provide a complete line connection? (such as the measurement location and the location of AC analysis)

5 months ago

0 Timothy Hegarty 5 months ago

TI__Guru 73752 points

Hello,

Please attach the SIMPLIS file, as that link is blocked f. You can measure the impedance by applying a voltage excitation and measuring the current to get Zcm =V/I:

0 Timothy Hegarty 5 months ago in reply to Timothy Hegarty

TI__Guru 73752 points

By the way, the plots above are for a ferrite CM choke, but you have a nanocrystalline. You can model the nanocrystalline impedance curve in segments using an RL equivlaent circuit for each.

0 user6055081 5 months ago in reply to Timothy Hegarty

Prodigy 40 points

I can't upload the file directly, so I'm posting the link

https://www.asuswebstorage.com/navigate/a/#/s/32CBA41641A9440C8789A597B94D5FF4Y?type=previewPageCover

It seems to have worked, thanks

But I don't quite know how to convert Excel into such an equivalent model. Maybe I'll study it further.

0 user6055081 5 months ago in reply to user6055081

Prodigy 40 points

EMI and CM Impedance.zip

The file can be uploaded, please take a look.

0 Naresh Adepu 5 months ago in reply to user6055081

TI__Expert 5835 points

Hello,

The following document Part 3: Modeling nanocrystalline chokes can help you on how to model the CM choke data into an equivalent model.

Import your latest choke data into the design calculator – look at how your impedance profile looks like. Then use the above reference to start with a basic model and tune the model parameters to fine tune. To look at whether your model's impedance vs frequency profile looks closer to that actual data.. do the following -

1. convert the CM choke model to Equivalent Circuit model.

2. Then enter your model parameters here and check on how the plot looks.

3. You can tune the values to match the profile closer to the actual choke data.

Thanks and Regards,

Naresh

0 user6055081 5 months ago in reply to Naresh Adepu

Prodigy 40 points

I have learned how to use Excel tools to quickly convert to SIMPLIS simulations so that I can quickly evaluate initial results that could be improved by using magnetic components with ICs. I am very grateful for Naresh and Timothy’s teaching. Thanks.