BMR685 Series DC/DC Converter

Flex Power Modules' BMR685 is designed for RF power amplifier applications (RFPA) requiring highly efficient DC/DC converters. This module provides high efficiency of up to 97.2% at half load. It has an output voltage range of 25 V to 55 V and can deliver up to 26 A output current. Its input voltage range is 36 V to 75 V, and isolation between input and output is 2250 V.

The BMR685 includes digital functionality, accessed over a PMBus® interface, which enables easy monitoring of temperature, voltage, and current, as well as simple adjustment of output voltage. It is supported by the Flex Power Designer software tool.

The converter has an operating temperature range of -40°C to +125°C with 100% available power at +100°C baseplate temperature. It includes comprehensive overvoltage, overtemperature, and shortcircuit protection mechanisms, meaning it achieves a long operational lifespan, with a mean time between failures (MTBF) of over 4.97 million hours.