Other Parts Discussed in Thread: TPS54425,
Hi Team,
My customer is considering TPS54325PWPR and TPS54425PWPR.
He has following 4 questions, could you kindly help? Thanks.
1. Is there any material explaining more detail about how D-CAP2 works?
2. How should customer select inductor for output filter?
Table 1 in p.13 of TPS54425 shows the recommended L for different output voltage value, customer wants to know what value should they use for 1.5V output voltage? Is it okay to use Webench to get the L value?
https://www.tij.co.jp/lit/ds/symlink/tps54425.pdf#page=13
3. What is output resistance of SW pin? Customer wants to know this value for FRA measurement.
4. Regarding FRA measurement, is there any difference for D-CAP2 and DCDC with other topology?
Is there any material explaining how to use FRA to measure DCDC performance?
Thanks.
Regards,
Jo