We are launching the BMR316, a high-performance non-isolated, unregulated DC/DC intermediate bus converter (IBC) specifically designed for AI and ML data center applications that demand intensive computational power. The compact BMR316 is ideal for other high-power IBC applications where board space is limited.
The BMR316 features a fixed 4:1 conversion ratio, efficiently stepping down 48 V to 12 V. It provides a continuous power output of 1 kW and can deliver peak power up to 2.8 kW. With a power density exceeding 900 W/cm3 (15 kW/in3) during peak load, the BMR316 is housed in an ultra-compact package measuring just 23.4 x 17.8 x 7.65 mm. It operates over an input range of 38 – 60 V (68 V peak), delivering an output of 9.5 – 15 V.
The BMR316 is designed to work seamlessly with a variety of voltage regulator modules (VRMs) and Point-of-Load (PoL) converters, further converting the intermediate bus to the core voltages needed further downstream in AI and datacom centers. These environments require high peak power handling, efficient use of board space, and optimized energy efficiency.
With a peak efficiency of 97.7% at half load, the BMR316 enhances cooling performance by reducing thermal demands, and the low-profile design makes it ideal for cold wall mounting or direct to chip liquid cooling solutions.
Additional features include fast load-transient response, high current-monitoring accuracy, and a calculated MTBF of 7.43 million hours. The BMR316 meets the latest IEC/EN/UL 62368-1 safety standards with built-in protection and warning systems.
The product is also supported by Flex Power Designer, a popular software tool that offers configuration, performance simulation, and monitoring capabilities, all with full control via a PMBus® interface.
Samples are available now, and the BMR316 is expected to be released to mass production in January 2025.