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UCC28910: in high side buck mode

Part Number: UCC28910

Hello,
customer has following requirements:

Vin 40 -140VDC, Vout 12V, Iout: 500mA, non-iso (no use of transformator)

and wants to use the UCC28910 in high side buck configuration. Do you have a reference design? Other ideas?

Regards, Holger