Hypex at your service
Can I add a small application board to the Mains Powered NCORE® Family and use the same power supply?
Yes, this is possible, see the datasheet for the specifications.
https://www.diyclassd.com/FAQ-Hypex/Mains-Powered-NCORE-Family/Can-I-add-a-small-application-board-to-the-Mains-Powered-NCORE-Family-and-use-the-same-power-supply