LM5069: Creepage/Clearance Distance

Marco Rojas

Part Number: LM5069

Tool/software:

Hi team,

I have a customer with the below inquiry. Let me know what you think and thanks in advance!

"We are planning to use the LM5069MMX-1/NOPB on a 48V power rail. I am looking at creepage/clearance distances for safety. The pin pad spacing on this part is 8mils edge to edge. As I understand the standard, this spacing is not sufficient to satisfy the creepage/clearance distance. What am I missing?"

Marco

over 1 year ago

0 Kunal Goel over 1 year ago

TI__Guru* 79071 points

I will check and get back to you.

0 Marco Rojas over 1 year ago in reply to Kunal Goel

TI__Intellectual 2750 points

Any response here?

0 Kunal Goel over 1 year ago in reply to Marco Rojas

TI__Guru* 79071 points

Hi Marco,

Sorry for delay. Can you tell in this image which distance is customer looking at? Also customer is following any standard for eg IPC, what is the standard requirement?

How much is load current ?

Regards

Kunal Goel

0 Marco Rojas over 1 year ago in reply to Kunal Goel

TI__Intellectual 2750 points

Hi Kunal,

Customer feedback below:

"It is pin edge to pin edge spacing, 0.5-0.27 (or 0.17).

The safety standard is UL 60950-1 which transitioned to 62368-1. I am not sure of the exact requirements yet. But so far, it looks to me that the part pin spacing violates the spacings, hence my question in case I am missing something.

I don’t think the load current is of concern here, but it is 7.5A."

Marco

Power management

Power management forum

LM5069: Creepage/Clearance Distance