Hello guys,
One of my customers is designing their own PCB to evaluate LMR33630 for their new products.
They have the following questions about output capacitor ESR. Could you please give me your reply?
Q1. ESR can be calculated by equation 6 on page 22 in LMR33630 datasheet.
Also capacitor ESR is changed much by frequency. (For example, 10ohm (at 0.1Hz) ~ 3mohm (at 1MHz)
Which ESR frequency should be compared with the valure calculated by the equation?
Q2. Similar question with Q1.
If the customer load current (delta I) transient time is 500ns, should they use ESR around 2MHz?
Your reply would be much appreciated.
Best regards,
Kazuya.
