LM25141-Q1: Which one got better EMI performance FPWM mode or diode emulation mode ?

PYTsai

Genius 11635 points

Part Number: LM25141-Q1

Which one got better EMI performance FPWM mode or diode emulation mode ?

In our application CISPR25 is required. if in this case will you suggest us to enable the diode emulation mode?

thanks!

over 6 years ago

0 Andy Chen over 6 years ago

TI__Mastermind 34715 points

Hi PY,

It depends your load condition, FPWM and Diode Emulation Mode have same performance at CCM mode operation. If you have concern on EMI performance at light load, then you need to use FPWM mode.

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LM25141-Q1: Which one got better EMI performance FPWM mode or diode emulation mode ?