Summary of Flex Power Modules launches 1000W DC/DC advanced bus converter
The BMR480 is a 1000W DC/DC bus converter utilizing Flex's Hybrid Regulated Ratio topology. Designed for high-power ICT, server, and industrial applications, it operates within a 40-60V input range and delivers up to 97% efficiency. Key features include PMBus v1.3 support, dynamic load compensation, and versatile thermal management options like heatsink or coldplate integration. It offers tightly regulated outputs between 9V and 13.2V with robust protection mechanisms for demanding environments.
Parts used in the BMR480 DC/DC Bus Converter:
- HRR (Hybrid Regulated Ratio) topology
- Quarter-brick-format module
- Standard baseplate
- Heatsink option
- Coldplate option
- PMBus communication interface
- Ericsson Power Designer software tool
- Protection circuitry (over-temperature, output-short-circuit, output-over-voltage)
Based upon Flex Power Modules’ Hybrid Regulated Ratio (HRR) topology, the BMR480 DC/DC bus converter module delivers up to 1000W and 96.2A peak power.
The BMR480 DC/DC advanced bus converter targets high-end and high-power applications. It is available in an industry-standard and low-profile quarter-brick-format with dimensions of 58.4 x 36.8 x 12.19mm (2.30 x 1.45 x 0.48-inch), and operates from a wide input range of 40 to 60V and offers multiple tightly regulated (±2.5 per cent) pre-programmed outputs at 10.4, 12 and 12.5V but can be factory configured at any voltage between nine to 13.2V.
Flex’s Hybrid Regulated Ratio technology enables better use of the powertrain to deliver high-power conversion across its input voltage range. The BMR480 offers power conversion of up to 97 per cent efficiency – at 53V and half load – while also keeping power losses low, says Flex.
As well as suitable for intermediate bus conversion (IBC), dynamic bus voltage (DBV) and distributed power architectures (DPA), the BMR480 power module has been designed to power high-end and high-power applications powered by multi-cell batteries or rectifiers that are commonly used in ICT (information and communication technologies) applications. It can also be found in networking and telecommunications equipment, industrial equipment, and server and storage applications.
The BMR480 is reliable, says Flex, delivering higher useable power in high ambient temperature and limited-airflow environments. Although supplied with a standard baseplate, it can also be connected to a heatsink or coldplate for extremely challenging thermal environments.
Dynamic load compensation and support for the latest version (v1.3) of the PMBus communication specification and the Ericsson Power Designer software tool are significant features of the BMR480, together with droop load sharing capability, 1500V I/O isolation, monotonic start-up, remote control, and a range of protection capabilities including over-temperature, output-short-circuit and output-over-voltage.
Read more: Flex Power Modules launches 1000W DC/DC advanced bus converter
- What is the maximum power output of the BMR480?
The BMR480 delivers up to 1000W and 96.2A peak power. - How efficient is the BMR480 at half load?
It offers power conversion of up to 97 per cent efficiency at 53V and half load. - Can the output voltage be configured differently than the pre-programmed options?
Yes, it can be factory configured at any voltage between nine to 13.2V. - Does the BMR480 support remote control capabilities?
Yes, remote control is listed as one of its significant features. - What software tool supports the PMBus communication specification?
The Ericsson Power Designer software tool supports the latest version v1.3 of the PMBus specification. - Is the BMR480 suitable for limited-airflow environments?
Yes, it is designed to deliver higher useable power in high ambient temperature and limited-airflow environments. - What isolation voltage does the module provide?
The BMR480 provides 1500V I/O isolation. - What types of applications is this module designed for?
It targets ICT, networking, telecommunications, industrial equipment, and server and storage applications.

