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TPSM63606: Cff value

Part Number: TPSM63606
Other Parts Discussed in Thread: TPSM63603

Hi team,


I’m trying to make WEBENCH design using TPSM63606, and have question on external component (Cff).

On the datasheet Table 8-1, the recommended Cff for Vout=5V is 22pF.

But the design generated by WEBENCH (Vin=12~24V, Vout=5V, Iout=2.2A) showed Cff=8.2pF. Please see this link for the example.

Which value should I use for my design?

Also, could you share how Cff value would affect the design performance?

Best regards,