LM5123-Q1: LM5123 does not work with LISN

Anton Kocherov1

Prodigy 40 points

Part Number: LM5123-Q1
Other Parts Discussed in Thread: LM5122

Hello, I can't run LM 5123 with a network equivalent. Described the problem in more detail in the file.6735.TI.docx

over 4 years ago

0 Richard Fu22 over 4 years ago

TI__Mastermind 31225 points

Hi Anton,

Thank you for using the LM5123. The spread spectrum capability is not included in this LM5123 model. Therefore, the best solution may be to build and test experimentally instead of simulation.

Thanks,

Richard

0 Anton Kocherov1 over 4 years ago in reply to Richard Fu22

Prodigy 40 points

Thanks for the answer. What do you think about LM5122. Why when the midpoint of the network equivalent changes from 0 to GND, the results of the interference pattern change?

0 Richard Fu22 over 4 years ago in reply to Anton Kocherov1

TI__Mastermind 31225 points

Hi Anton,

I think this may be similar to the case with the LM5123, in that simulating conducted emissions is quite difficult for the model. You can take a look at this series of articles for guidance: www.how2power.com/.../EMI_Guide.php

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LM5123-Q1: LM5123 does not work with LISN