TPS24720: A doubt about TPS24720's application on server's power design

Thanks for your interest on TI Hot Swap controllers. Please fill up the design calculator and share it with us for review. The design calculator is available at https://www.ti.com/lit/zip/slvc563. 

hi , Avishek Pal

     Thanks for ur reply.I've finished the table and plz have a check for my design.3821.Copy of TPS24720_Design_Calculator_REV_F.xlsx

Thanks for sharing the design calculator. I will get back to you tomorrow. 

hi , Avishek Pal:

    I find a issue in tps24720's EVM. Here is the link.https://www.ti.com/lit/ug/sluu458a/sluu458a.pdf?ts=1639535100134&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS24720%253FkeyMatch%253DTPS24720%2526tisearch%253Dsearch-everything%2526usecase%253DGPN

    Figure 2 shows a way to optimize the precision of dual current sense resistors , and the topology as follows 

    But the following demo's layout shown as 

it seems there are different ,which one will be the right layout should I follow?

best wishes

Effectively you need 0.5 mΩ sense resistor according to the design calculator I shared with you. How many sense resistors are you using of what value? You may refer to this blog regarding sense resistors layout. 

e2e.ti.com/.../choosing-the-right-sense-resistor-layout

Thanks for reply. In the case of we are doing, the curernt sense resistor are two pcs of 1mΩ in parallel.

auctally,I've find the doc that you send.but it seems have't discuss the situatuon of dual-current-sense resistor.

The layout should be like this as there are two sense resistors.

Figure 2 and the Note on top of that in the TPS24720EVM user's guide is applicable when a single resistor is used either R7 or R8 to set the desired current limit threshold on this EVM.  

Ok,got it.

Thanks.