28-06-2016 | | By Paul Whytock
A third-generation quarter-brick advanced bus converter that delivers up to 650W and has a regulated output voltage over a range of 40V to 60V has bee developed by Ericsson Power Modules today.
The company says its BMR458, a third-generation 3E quarter-brick advanced bus converter, will accommodate high power applications based on intermediate bus conversion and dynamic bus voltage architectures.
The module is suitable for high-power applications powered by multi-cell batteries or rectifiers commonly used in the Information and Communication Technology (ICT) industry and employ intermediate bus conversion or dynamic bus voltage architectures.
High power delivery cuts the number of modules required in very high power applications and the company claims this is the only advanced bus converter available to offer active- or droop-current sharing. Other features including dynamic load compensation, snapshot parameter capture, and a PMBus v1.3 interface.
The module’s dynamic bus voltage capability enables the module’s output voltage to be adjusted to suit the load.
Key electrical characteristics of the module include efficiency of up to 96.6% at half load and 96.3% at full load, maximum current output of 54.2A, tightly regulated 12V output (+/–2mV, typical) across the 40 to 60V input voltage range, output current monitoring of +/-1A and a transient recovery time of only 1ms.
The BMR458’s dynamic load compensation (DLC) feature adjusts the control loop to meet the capacitance load.
Other features include the snapshot parameter capture analysis tool, which stores the last known measurement; adaptive ramp time, which modifies ramp time to suit output capacitive load and automatic backward current protection when paralleling modules, which simplifies OR’ing circuitry.