The converters are CUI’s first product release based on the license agreement with Ericsson, the world's leading provider of technology and services to telecom operators, for their Advanced Bus Converter portfolio based on the FRIDA II platform.
CUI’s NQB and NEB series are pin and function compatible with Ericsson’s BMR456 and BMR457 series respectively, enabling OEMs to address interoperability challenges, reduce time to market, and decrease supply chain risk for these leading-edge digital products.
The NEB series, housed in an 1/8 brick package, and the NQB series, housed in a 1/4 brick package, incorporate a 32-bit ARM-based microcontroller with power-optimizing firmware designed to maximize and flatten the efficiency curve, providing peak performance across a much wider range of loading conditions when compared to intermediate bus converters currently on the market.
With typical efficiencies as high as 96.4% and optimized efficiency from 20% to 100% load, the modules are ideal in applications where loading conditions can vary greatly, including next-generation Information and Communication Technology (ICT) equipment. The firmware is also designed to handle input voltage transients with slew-rates of up to 0.5 V/µs, while keeping the output voltage within ±10% and ensuring that the output voltage does not trigger over-voltage protection.
Both the NEB and NQB series provide a digital interface that is PMBus 1.2 compliant, allowing customers to configure and store a range of parameters via a USER_STORE memory block. Designers are able to set a number of protection features including over-temperature, over-current, and over-voltage. Additional configurable parameters include output voltage, voltage margining, fault management, precision delay ramp-up, and start/stop.
The new converter family is available in two input range configurations; 40 to 60 Vdc input for datacom applications and 36 to 75 Vdc for telecom applications. The NEB 1/8 brick series is offered with power ratings ranging from 264 to 300 W, while the NQB 1/4 brick series is available in 420 to 468 W configurations. Output voltage