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UCC28782: about initial power fpr startup

ACGUY
Guru 11170 points
Part Number: UCC28782

Hello E2E,

Please let me know about initial power for startup of ACF device.
The UCC28782 has not HV-startup port.
I looked the schematic of EVM, but I could not to find initial power providing path.
Where does VDD_pri at startup come from?

Regards,
ACGUY