In today’s computing environment, CPUs, FPGAs, ASICs and even peripherals are growing increasingly complex and, consequently, so do their power delivery requirements. To handle the higher demands, multiphase regulators are becoming increasingly common on motherboards in many areas of computing--from laptops and tablets to servers and Ethernet switches. Designing with these regulators is more challenging than using conventional switchers and linear regulators, but the benefits of multiphase outweigh the complexity for high-performance power applications. TI’s Multiphase Buck portfolio includes Intel CPU core regulators, as well as other ASIC/Processor/FPGA Multiphase Buck regulators, with or without interfaces to the processor.
This training series is built around the video instruction of TI’s own application engineer, Carmen Parisi, and is designed to provide the necessary equations and guidance to get a new multiphase design up and running and ready for validation. After an overview of multiphase benefits, an in-depth design example of a multiphase buck regulator for an ASIC core rail is presented.
Table of contents
1. An Introduction to Multiphase Buck Regulators
The below introductory section features a video briefly discussing what exactly multi-phase buck regulators are, what applications they're suited for, and some of the challenges associated with implementing them. Additionally, the listed resources dive a little deeper into the topics covered in the video, providing further instruction in the beginning of your multiphase journey.
An Introduction to Multiphase Buck Regulators
Carmen Parisi gives an introduction to Multiphase Buck Regulators.
|09:27||Carmen Parisi gives an introduction to Multiphase Buck Regulators.|
PowerStack(tm) Packaging Technology Overview
A deeper look into the construction of TI’s Smart Power Stages and how packaging can enhance circuit performance
|04:17||A deeper look into the construction of TI’s Smart Power Stages and how packaging can enhance circuit performance|
2. Designing with Multiphase
In designing with multiphase, Carmen works through a six-phase design for powering the core voltage of a networking ASIC, Marketing Manager George Lakkas explains why multiphase converters are ideal for high currents, and TI engineers blog about common concerns and use contexts.
Multiphase Buck Regulator Design: A Case Study
Carmen Parisi gives a detailed look into the multiphase buck design process.
|10:29||Carmen Parisi gives a detailed look into the multiphase buck design process.|
3. Testing in the Lab
In testing in the lab, Carmen takes a six phase buck regulator through basic validation testing in the lab with plenty of tips and waveforms shared. Let Carmen show you how to test transient response, input and output ripple, phase stability, and thermal performance. Additionally, TI engineers blog about various lab tricks related to multiphase devices.
Testing a Multiphase Regulator in the Lab
Carmen Parisi explains how to test a multiphase buck regulator in the lab.
|06:07||Carmen Parisi explains how to test a multiphase buck regulator in the lab.|