https://www.digikey.com/en/products/detail/texas-instruments/LM5165YDRCR/5994588 https://www.digikey.com/en/products/detail/texas-instruments... There should b

https://www.digikey.com/en/products/detail/texas-instruments/LM5165YDRCR/5994588 https://www.digikey.com/en/products/detail/texas-instruments... There should be plenty. 48-54 VDC is the standard for OCP powershelf designs. Hyperscalers such as Google have been working for nearly two decades now to eliminate voltage conversion steps. When I left, the power plane within the server PCB ran at the busbar voltage, which could float up to 54VDC. Given this, I'd expect them to convert from 48-54VDC down to 3.3 directly or at most something like 5VDC and then use smaller VRs near components such as ram and cpu.