Design guide for VOSNS+ and VOSNS- of MPM3695GMQ-10-xxxx

DC-DC Power Converters
1

Hi Support

I am looking for detail design guide for VOSNS+ and VOSNS- of MPM3695GMQ-10-xxxx. For example,
(1) I want to understand how long we can route the VOSNS+ and VOSNS- between load sensing point and regulator?
(2) what’s the parasitic requirement for VOSNS+ and VOSNS-? Do I need to route like 50 ohm transmission line? or is the only requirement is resistance and what is the target value?

2

Hi Tim,

One of the team member will reach out to you soon via email to help support you.

Thank you
Saurabh

3

Hi

Could you please upload the EVM design schematic on the website?

6

Hi
Can I get some update for the support?

7

Hi @tim.peng,

So sorry for the delay here.
Please find the response for your questions below:

  1. It is hard to provide a specific guidance on the maximum distance between load and regulator. It depends on the impedance of the distance. If the impedance is too large, oscillation may occur. We usually add a 10nF capacitor across VOSNS+ and local output to eliminate this oscillation.

  2. No resistance is required for VOSNS+ and VOSNS-. You may route them as differential lines and keep their resistance similar.

One our team member will contact you soon via email with the EVM schematics. I have forwarded the contact information.

Thank you for your patience.
Saurabh