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Megawatt racks are coming: How 800 VDC architectures reduce losses and remove constraints
Flex Power Modules has introduced the BMR317, a third-generation, compact 8:1 fixed ratio intermediate bus converter engineered for next-generation AI data center and communication systems.
Built for space- and efficiency-constrained environments, the BMR317 is available in two variants delivering 800 W and 1,000 W of continuous power, with peak capabilities of up to 2,000 W and 2,500 W, respectively. This is designed to support robust performance for the fast, dynamic load steps typical of modern AI compute and inference workloads.
The open-frame design and linear component landscape enable optimized cooling capability and high-power density above 397 W/cm3 (9.1 kW/in3) for the 800 W variant. A hybrid switching capacitor (HSC) topology helps to further maximize efficiency and reduce EMI, making the BMR317 ideal for tightly packed accelerator cards, servers, and xPU platforms.
With a 40–60 V input range and a 5–7.5 V output (8:1 fixed ratio), along with PMBus management and compatibility with the Flex Power Designer tool, the BMR317 integrates seamlessly into advanced power architectures and complements downstream voltage regulator modules. This creates an efficient and scalable two-stage conversion path for high-current AI and hyperscale workloads. Compatible VRM solutions include Flex Power Modules’ BMR510 and BMR511 series of integrated power stages and Renesas’ RRV2x830 “Power Tower” series.
The 800 W variant of the BMR317 is available now, with the 1 kW variant scheduled for release in the second half of 2026.
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About Flex Power Modules
Flex Power Modules, a business line of Flex, is a leading manufacturer and solution provider of scalable DC/DC power converters. The business primarily serves the data processing, communications, industrial and transportation markets with a wide range of both isolated and non-isolated, regulated and non-regulated solutions.
