Other Parts Discussed in Thread: AM3352
Hi,
I have a question on the output capacitor for the TL5209. Is this part stable with a low-ESR ceramic capacitor on the output?
I see it used with a ceramic capacitor in the reference design on the product page, and I have seen it used with a ceramic output capacitor in designs such as the BeagleBone Black, but the datasheet is a bit unclear. It seems to indicate ESR should be approx. 1 ohm, and has a comment about too low ESR might cause problems (without specifying what is too low), but most MLCCs would be significantly less ESR than 1 ohm. The datasheet doesn't provide any details or design procedure for ESR, such as min/max, dependency of ESR on load current, capacitor value etc.
And the part doesn't seem to have a SPICE model on the product page, and also doesn't appear in Webench designs, so modeling loop stability is also not feasible.
Appreciate it if anyone knowledgeable could clarify.
Thanks,
Best regards,
Anand.