Multiphase Buck Design From Start to Finish (Part 1) Carmen Parisi ABSTRACT This application report covers the basics of multiphase buck regulators. A comparison versus single-phase regulators is presented before diving into a detailed design example aimed at powering the core rail of a generic

ST's digital multi-phase controllers provide complete power conversion control systems for Intel’s CPU, DDR memory and VCCIO/VMCP power supply requirements. Intel Server VR12, VR12.5 and VR13™ compliant; Fully configurable through PM bus and SVID commands; Fully digital PWM solutions with 6+1, 4+1, 3+1 and 1+1 phase operation

Infineon’s flexible and feature-rich digital multiphase controller portfolio powers CPUs, GPUs, SoCs and ASICs used in a wide range of applications such as server, storage, datacom, telecom and consumer applications.

With our diverse portfolio of power devices and multiphase controllers, we empower power-supply design of your CPUs, GPUs, SoCs, or Custom ASICs and FPGAs for use in enterprise servers, datacenters, networking and communications.

Monolithic Power Systems Controller family offers an extensive portfolio of controller solutions. MPS offers controllers for Buck, Boost and Buck/Boost and up to 6 phases. With our digital COT (constant on time) control and fast transient response, we offer superior efficiency.

TI’s TPS53681 is a Dual-Channel 6+2/5+3 D-CAP+TM Multiphase Step-Down Controller with PMBus and NVM. Find parameters, ordering and quality information.

The MP2888A is a digital, multi-phase, pulse-width modulation (PWM) controller with digital PWM-VID interface compatible with NVIDIA’s Open VReg specification. The MP2888A can work with MPS’s Intelli-Phase products to complete the multi-phase voltage regulator (VR) solution with minimal external components.

Instead of deploying multiple controllers or controllers with greater phase count, this document discusses the feasibility of having power stages operating in parallel. This document is written for design engineers of multiphase buck high current applications requiring a high phase count to support their respective loads.

The XDP™ XDPE132G5H is a digital multi-phase buck controller that can be configured in either a single loop or dual loop mode with a feature set optimized to support high performance processors that require AVSBus, AMD SVI2, or nVIDIA PWMVID.

The NCP81610 is a multiphase synchronous controller optimized for new generation computing and graphics processors.