High Voltage Three phase AC input to 5V

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1. Have 3 phase ac input with neutral, where each phase voltage goes from, 85V-600Vacrms
2. Need output at 5V/500mA
3. Is there any reference design or some IC solution available for this?
4. Preferred is transformerless, otherwise if not possible only then transformer to be used.

Hi VTakniki,

LNK-TN2 is a suitable 900V product for the job.
https://ac-dc.power.com/products/linkswitch-family/linkswitch-tn2/

Closest reference design is a 4.8W

https://ac-dc.power.com/design-support/reference-designs/design-examples/der-845-4pt8watt-non-isolated-buck-converter-using-linkswitch-tn2-900v/

with non isolated buck design using LNK-TN2 900V rated part

Thank you,