Five output digital voltage regulator is for multi-rail systems

It has been developed as an integrated power management IC (PMIC) to replace multiple regulators with a single device in a compact 7.0 x 7.0mm 56-pin QFN package. It is intended for current and future applications in high density ASIC and FPGA, says the company, although it can also be used for CPU multi-rail systems, embedded computing systems, and communications and storage systems.

The regulator is designed for single rail operation ranging from 5.0 to 12V - most PMICs are only 5.0V, points out the company. There is one 500mA LDO output, and four configurable switching regulator outputs, two at 2.0, and two at 4.0A. Outputs can be used to provide the typical rails required for core, memory, and I/O voltages. Output ranges from 0.5 and 3.6V for regulators A to D, and between 0.25 and 5.1V for the LDO.

Switching regulator A can output up to 50A when combined with an external power stage, advises the company. Switching regulators C and D can be combined to deliver 8.0A in a low ripple, dual-phase configuration. All outputs are within the power requirements of most FPGAs and ASICs (between 10 and 50W), including integrated voltage sequencing. Industry standard PMBus commands provide an easy-to-use interface for status and telemetry. PMBus can be used to configure the output voltages in 5mV steps.

The regulator is already part of the UltraZed system on module (SoM) from distributor, Avnet. The compact package, combined with PMBus communication for real-time monitoring and control provides the SoM's power management. Chris Ammann, Avnet's global technical marketing engineer for power said: "With the integration level and excellent power density of the IRPS5401, we were able to implement two IRPS5401 devices onto our UltraZed SoM. This gives us 10 rails that can be fully monitored and controlled with software, while maintaining a business card size footprint for the SoM".