MAXREFDES1009 includes a TVS (D1, SMAJ58A-13-F) that is not an appropriate device for the application. The ABS MAX rating for the MAX17502 is 70V, where this TVS has a max breakdown above 70V.
https://www.diodes.com/assets/Datasheets/ds19005.pdf
MAX17502
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Create a design and simulate using EE-Sim®: MAX17502
The MAX17502 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated...
Datasheet
MAX17502 on Analog.com
MAXREFDES1009 includes a TVS (D1, SMAJ58A-13-F) that is not an appropriate device for the application. The ABS MAX rating for the MAX17502 is 70V, where this TVS has a max breakdown above 70V.
https://www.diodes.com/assets/Datasheets/ds19005.pdf