Circuit And Packaging Innovations Plus Latest MOSFETs Optimize DC-DC Converters For Space-Constrained Designs

by Ramesh Balasubramaniam, International Rectifier , El Segundo, Calif., How2Power Today, Jun 14 2013

Focus:
To develop the third-generation SupIRBuck point-of-load (POL) integrated voltage regulators designers at International Rectifier combined innovations in IC switching regulator circuit design, MOSFETs and IC packaging. This article describes how these innovations were leveraged in the development of the IR3847, a 25-A POL converter in the Gen 3 SupIRBuck family. Benefits of the new PWM modulator design (which enables short on-time pulses widths with very low jitter), a higher-voltage internal gate drive, and proprietary package design are discussed here along with other device features that enable the regulator to address requirements of thermally and space-constrained applications. To support the selection and design in of the SupIRBuck regulators, a free online design tool is offered at the vendor’s website and a demonstration of this tool is presented here.

What you’ll learn:

• How to understand the circuit design and packaging techniques used to produce the 25-A third-gen SupiRBuck voltage regulator
• How to use International Rectifier’s online tool for selection and design in of a SupIRBuck voltage regulator

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