Upgraded voltage regulator module offers improved efficiency

Flex Power Modules has upgraded the specification of its innovative BMR510, a two-phase voltage regulator module. It now employs advanced materials of magnetic core, delivering high inductance in a small package size, enabling lower switching frequency operation than would be required with the gapped ferrite cores previously utilised. This, in turn, decreases switching losses, enhancing efficiency by up to a useful 1.5% to 90% compared with the original solution at 13.5V input, 0.8V/40A output.

The module can deliver 80A continuous (140A peak) output current at 0.5-1.3V from an input of 4.5-16V. The module comprises complete power stages, including MOSFETs and drivers together with integrated inductors, for a highly specified integrated power stage. It is excellent for space-constrained applications with a volume of lower than 0.7cm3 (10mm x 9mm x 7.6mm).

The module is halogen-free and optimised for top-side cooling. Terminations are solder-bump or, optionally, LGA for easy assembly. Output over-current and over-temperature protection are incorporated, and sensed values are offered for remote monitoring. The module accepts tri-state PWM inputs from the chosen controller, and a separate enable input is provided.

The module aims to deliver power for silicon devices with a current demand of over 100A, such as GPUs, CPUs, IPUs, high-end FPGAs and high-performing ASICs often seen in the latest AI applications.

Olle Hellgren, product manager at Flex Power Modules, comments: “Our upgraded BMR510 gives an instant boost to efficiency in existing applications and gives more flexibility in new designs, where power demands are even greater, and every watt saved is valuable.”