Voltage regulators deliver up to 12A output

An International Rectifier product story

Edited by the Electronicstalk editorial team Feb 15, 2010

International Rectifier (IR) has announced the expansion of its Supirbuck range of integrated point-of-load (POL) voltage regulators for energy-efficient server, storage and netcom applications.

The Gen2.1 Supirbuck range features IR's latest advances in control IC, Mosfet and package integration technologies to deliver up to 12A output current in a low profile, thermally enhanced 5mm x 6mm Power QFN package.

Capable of handling input voltages as wide as 1.5V to 16V, this range of integrated voltage regulators is designed to deliver output voltages from 0.7V to 90 per cent of the input voltage with benchmark efficiency over the entire load range, plus peak efficiency greater than 96 per cent.

As a result of delivering programmable switching frequencies up to 1.5MHz, the device shrinks board size as well as achieving high power density.

The Gen2.1 range eliminates the need for traditional dual-stage POL conversion by operating directly from 12V, and while optimised for 12V input voltage, high efficiencies are achieved in applications with 9.6V, 5V or 3.3V input voltages.

In addition to providing pin compatible current options from 2A to 12A, the Gen2.1 Supirbuck devices offer a new power good (Pgood) output window comparator for over-voltage and under-voltage detection, shorter dead time to reduce power losses and more precise over-current (OC) limit.

Additional features include: one per cent accurate 0.7V reference voltage; programmable hiccup current limit; programmable soft start; enhanced pre-bias start up; thermal protection; an enable pin with voltage monitoring capability; sequencing (IR384xW); DDR memory tracking (IR383xW); and a -40C to 125C operating junction temperature.