Flex Power Modules recently announced a new intermediate bus converter (IBC), model number BMR316, a high-performance, non-isolated, unregulated DC/DC intermediate bus converter (IBC) designed for compute-intensive AI and machine learning data center applications. This compact BMR316 is ideal for other high-power IBC applications where board space is limited. A Bus Converter, also known as an Intermediate Bus Converter (IBC), is a power conversion device that is primarily used to convert one voltage level to another to meet the needs of a specific circuit or system. In power electronics, bus converters are typically used for direct current/direct current (DC/DC) conversion, i.e., converting one DC voltage to another. In data centers, telecommunications, industrial automation, and electric vehicles, bus converters are a key component for efficient and reliable power management. In complex electronic systems, such as data centers or telecom base stations, bus converters can distribute the main power to multiple loads, each of which may require different voltages and currents. With the development of technology, the design of bus converters is increasingly focusing on high efficiency, high power density, and intelligent management to meet the growing demand for energy efficiency and environmental adaptability. In addition, bus converters can be integrated into more complex power management systems and work in tandem with other power components for optimal power distribution and monitoring.
Figure：Flex Power Modules unveils an intermediate bus converter IBC Designed for AI and machine learning（Source：Powerelectronic news）
Key features of BMR316:
High power density and efficiency: With a power density of more than 900 W/cm³ (15 kW/in³), the BMR316 provides a continuous power output of up to 1 kW at peak loads and can deliver peak power of up to 3 kW.
Compact size: The BMR316 measures just 23.4 x 17.8 x 7.65 mm, making it ideal for space-constrained applications.
Wide input range: The device operates over an input range of 38 to 60 V (68 V peak) and provides an output of 9.5 to 15 V.
Compatible with Multiple Voltage Regulation Modules (VRMs) and Point Load (PoL) Converters: The BMR316 is designed to work seamlessly with a wide range of VRMs and PoL converters to convert intermediate buses to the core voltages required for AI and data centers.
High Efficiency: With a peak efficiency of 97.7% at half load, the BMR316 enhances cooling performance by reducing heat demand, and its low-profile design makes it suitable for cold wall installation or direct chip liquid cooling solutions.
Safety standards: The BMR316 complies with the latest IEC/EN/UL 62368-1 safety standards and has a built-in protection and warning system.
Software support: The product also supports the Flex Power Designer software tool, which provides configuration, performance simulation, and monitoring through the PMBus® interface and is available as a free download.
Impact on the global semiconductor supply chain
The introduction of the BMR316 further strengthens the energy efficiency and power density of data centers in the areas of AI and machine learning, which is an important advance for the global semiconductor supply chain. As the demand for computing power continues to grow in data centers, high-efficiency, high-power-density solutions like the BMR316 will help reduce energy consumption, reduce footprint, and improve overall data center performance.
BMR316 is expected to enter mass production in January 2025 and samples are available now. The launch of this IBC not only demonstrates the innovation of Flex Power Modules in the field of power conversion solutions, but also provides new impetus for the future development of data centers around the world.
