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Two phase Voltage Regulator Module for high power chips

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By Nick Flaherty


Flex Power Modules has developed its first two-phase voltage regulator module (VRM) for powering high performance processors and FPGAs.

The BMR510 provides a continuous total output current of 80 A and a 140 A peak output at 0.5-1.3 V from an input of 4.5-16 V. At less than 0.7 cm3 (10 x 9 x 7.6 mm) the module provides a complete power stage, including magnetics, to power silicon devices such as CPUs, GPUs, IPUs, high-end FPGAs and high-performing ASICs with a current demand of over 100 A, commonly found in the latest AI applications.

The BMR510 is optimized for top-side cooling, and features LGA or optionally solder-bump terminations for easy assembly. Over-temperature and over-current protection are included, and values are sensed for remote monitoring. An enable input is provided and the module will accept tri-state PWM inputs.

Thermal models are available for the part to enable effective integration in the target application. The BMR510 will be released for production in Q1/22 and samples are available now.

The 2-phase BMR510 is the first of multiple VRMs with different variations of total number of phases, output current and footprints, to support both current and next generation CPUs and GPUs.

“We have targeted the BMR510 at power- hungry silicon in products with tight space constraints but without performance compromise. It’s an ideal power component for high-end applications such as AI, Big Data, and autonomous vehicles,” said Olle Hellgren, Product Manager at Flex Power Modules.

flexpowermodules.com

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