Multiphase 101

Learn the necessary equations and guidance to get a new multiphase design up and running and ready for validation.

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. Our 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 our own application engineer, Carmen, 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.

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