The converter family provides monitoring functionality and control of the feedback loop to help stabilization.
The high-density BMR683 converter comes in the industry-standard quarter-brick format, saving board space. The device has an output power up to 500W at 28Vout, and an input voltage range of 36V to 60V. It has typical efficiency peaking at 95.5% at full load, and a broad output voltage adjustment range of 14V to 35V, allowing for easy optimisation of the connected RF section.
For RFPA applications using 28V gallium nitride (GaN) or laterally diffused MOSFET (LDMOS) power amplifier designs, the high-power converter provides a digital PMBus interface to allow for the monitoring of input and output voltages, output current, and device temperature. The device also allows users to configure many aspects of the device operation including voltage and current for improved fault tolerance, and optimisation of the module’s control loop for stable operation in a wide range of circumstances. Power management features also include configurable soft start/stop, precision delay, and ramp-up.
Over-voltage, over-temperature and short-circuit protection mechanisms enable a prolonged operational lifespan, with a mean time between failures (MTBF) of over 5 million hours (Mh).
These DC/DC converters comply with IEC/EN/UL 62368-1 safety standards. The devices offer an operational temperature range of -40°C to +125°C and measures 58.4 x 36.8 x 12.7 mm (2.3 x 1.45 x 0.5 in).
