Flex Power Modules announces BGA packaging option for digital point-of-load DC/DC converters

Flex Power Modules’ BMR466 and BMR461 digital point-of-load (POL) DC/DC power modules are now available to customers with Ball Grid Array (BGA) packaging, as well as in their original compact Land Grid Array (LGA) package.

Both modules target deployment in distributed power and intermediate bus voltage architectures within the Information and Communication Technology, telecom and industrial sectors, in addition to being suitable for high-power and high-performance use in products such as networking and telecommunications equipment, servers and data storage applications, as well as industrial equipment.

According to Flex Power Modules, these are proven to deliver a power density of 24A/cm3, and up to 94.4% efficiency with a 5V input and a 1.8V output. At half load the BMR466 can handle up to 60A and is designed to power microprocessors, FPGAs, ASICs and other digital ICs on complex boards.

Up to eight of the fully regulated 60A (maximum) POL converters can be connected in parallel to deliver up to 480A in multi-module and multi-phase systems. Operating from a 4.5V to 14V input, the BMR466 is said to be suited to operation across a range of intermediate bus voltages, and complies with the Dynamic Bus Voltage scheme to reduce power dissipation and save energy.

The factory default output voltage is set to 1.2V, but can be adjusted from 0.6V to 1.8V either via a pin-strap resistor or PMBus commands.

Through software control, Flex Power Modules says its BMR466 uses adaptive compensation of the PWM control loop and advanced energy-optimisation algorithms to reduce energy consumption and deliver a power supply with fast transient performance over a wide range of operating conditions.

In multi-module systems, two or more of the single-phase BMR466 POL converters can be synchronised with an external clock to enable phase spreading, resulting in reduction of input ripple current and corresponding capacitance requirements and efficiency losses.

Operating from a 4.5V to 14V input, the BMR461 makes “significant” gains in efficiency, especially in sub-1V modules where Flex Power Modules says it performs up 10 points higher than high-market-average units.

Author
Bethan Grylls