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Max DC voltage X-NUCLEO-PLM01A1 can communicate over ?

JARViE
Associate

‎2025-09-03 6:57 PM - last edited on ‎2025-09-04 1:04 AM by

What's the max DC powerline voltage I can use with the X-NUCLEO-PLM01A1 expansion board?  Asked another way, what's the max voltage I can connect to the PLM_CONNECTOR C1?Capture.PNG

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Peter BENSCH
ST Employee

‎2025-09-04 12:55 AM

Welcome @JARViE, to the community!

With the appropriate design of the networks at PA_OUT and RX_IN, any DC voltage is conceivable in principle.

However, with the current configuration of the X-NUCLEO-PLM01A1, the DC voltage is determined by the voltage rating of C2 and, even more so, by the breakdown voltage of D4. The maximum DC voltage is not specified for reasons unknown, but I suspect that it may be max 10..12V without exceeding the maximum power dissipation of R5.

Hope that helps?

Regards
/Peter

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