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WEBENCH® Tools/LM3481-Q1: Values of Isense and Comp

Part Number: LM3481-Q1
Other Parts Discussed in Thread: LM3481

Tool/software: WEBENCH® Design Tools

Hi Team,

 A customer run a simulation of LM3481-Q1 in Webench. However, he had some concerns in the simulations as follows.

1. PIN #1 – Isen is connected to Cfilt and Rfilt resistor, but there is no equation in the datasheet or a way for finding the right values for them. (Chapter 7.3.3 in the datasheet -particularly on page 15)


2. PIN #3 – COMP is connected to an external 2 capacitors and a resistor but the datasheet document does not explain how to choose the right values for these parts.



3. When using WEBENCH, the EMI in/out filter option is greyed out. Do we have any document that will help the customer design the filter circuit?