This document describes a new module voltage regulator system for power supplies, which can provide efficient and stable power output in a small, low-profile form factor. It is suitable for applications that require high power output. The system has a simple design and installation process, and has lower system costs and power consumption.
The document details a solution for regulating 1.5V and delivering up to 48A of current to loads consisting of four FPGAs. It focuses on the LTM4601 Module DC/DC regulator, which is a high-performance power module shrunk down to an IC form factor. This complete integrated solution includes the PWM controller, inductor, input and output capacitors, ultralow Rds(on) MOSFETs, Schottky diodes, and compensation circuitry.
The design using these DC/DC uModule regulator systems requires only external bulk input and output capacitors and one resistor to set the output from 0.6V to 5V.
A regulator comprising four parallel LTM4601s can produce a 48A (4 x 12A) output.
The high switching frequency is typically 850kHz at full load.