Direct power conversion from 50V to 0.8V for AI chips
Amber Semiconductor is to show a power conversion technology for datacentres that can reduce the energy losses of AI chips.
The demonstration at 2025 Applied Power Electronics Conference (APEC) eliminates conversion steps to provide 50VDC to 0.8VDC power directly to the AI chip on the motherboard of a datacentre server. This is scalable to over 1500A with over 90% efficiency.
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“There is a new energy crisis in datacentres, accelerated by their support of power-hungry AI processing,” said Thar Casey, CEO of AmberSemi. “Power demand exclusively from data centres is projected to jump from approximately 3% today to over 8% and some say over 20% of all U.S. power usage by 2030. Exacerbating this problem is that datacentres are built on the same inefficient power architectures that are struggling to support the power needs of new innovations like AI. With AI driving complex computations with lower process nodes following Moore’s Law, the problem is not going away. Rack power is continuing to increase from 10-40kW to 100-200kW in a short period of time.”
“AmberSemi is addressing the power problems from a different vantage point, working to address the overall system architecture as opposed to a singular focus on one aspect of the power chain. AmberSemi is using this system viewpoint with a combination of innovation in power conversion, control and architecture, semiconductor processes and material science to bring solutions to the market that solve the entire power ecosystem challenge.”
“We are pioneering new solutions for improved power transmission, including 800VDC architectures and 48V/50V intermediate bus voltages, ideal for factories, datacentres and even automotive battery systems. This architecture upgrade will improve efficiency for large power systems and provide a better approach to power distribution and conversion steps,” he said.
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