Flex Power Modules introduces a new line of digital PMBus DC-DC converters

     Flex Power Modules has announced the launch of a new family of digital PMBus DC-DC converters, BMR683, targeted primarily at radio frequency Power amplifier (RFPA) applications and infrastructure in the 5G telecommunications market. To help with stability, this new converter family provides the necessary monitoring functions and control of the feedback loop.

     The high-density BMR683 converter comes in the industry standard 1/4 brick form, thus saving valuable board space. The device has an output power of up to 500W at 28Vout and an input voltage range of 36V to 60V. It offers an excellent price-performance ratio, typical peak efficiency of 95.5% at full load, and a wide output voltage regulation range of 14V to 35V, making it easy to optimize the connected RF portion.

     For RFPA applications designed with 28V Gallium nitride (GaN) or transverse diffusion MOSFET (LDMOS) power amplifiers, this high power converter provides a digital PMBus interface so that input and output voltages, output currents, and device temperatures can be easily monitored. The device also enables users to configure many aspects of device operation, including configuring voltage and current to improve fault tolerance, as well as optimizing the module's control loop for stable operation in a variety of situations. Power management features also include configurable soft start/stop, precision delay, and acceleration.

     Its advanced overvoltage, overheat and short circuit protection also extends service life with an average time between failures (MTBF) of more than 5 million hours (Mh). Like all Flex Power Modules' DC/DC converters, these devices comply with the IEC/EN/UL 62368-1 safety standard and operate at temperatures ranging from -40 ° C to +125 ° C. The industry-standard quarter-brick DC/DC converter is 58.4×36.8×12.7mm (2.3×1.45×0.5in).

     According to OlleHellgren, Director of product management and business Development at Flex Power Modules, "The BMR683 provides a digital interface for GaN and LDMOS RFPA applications for the first time, combining superior efficiency, power density and reliability with increased design flexibility and monitoring capabilities. In particular, this new solution enables control optimization, making it ideal for handling load fluctuations in FPGA applications."