PMP10393

High Density 600mV 200 A 5-6 Phase DC-DC Buck Converter with PMBus Interface Reference Design

PMP10393

Design files

Overview

Advanced DCAP+ control is used to provide the high speed dynamic control needed for CPU, Memory and ASIC applications. Up to six high current synchronous power stages provide the high currents and low losses needed for these applications. Multi-phase also allows output ripple cancellation and effective higher bandwidth control for a given switching frequency.

PMP10393 has same hardware as 1.0V PMP9738 but demonstrates operation at 600mV output up to 200 A off 12V input. Fixed on time mode and reduced switching frequency at 600mV help reduce losses and improve thermal balance between FETs.

Testing at 120A output with 3 & 4 phases and lower cost Power Stage also included. Design focuses on ease of electrical testing and ability to make changes "on the fly" thru the PMBus interface. On board bias supplies and a high speed dynamic load round out the rich test interface.

Features
  • Same hardware as 1.0Vout PMP9738, but with 600mV output testing
  • DCAP+ control for excellent step load response, SVID and PMBus interfaces
  • Thermal performance & dynamic response verified at 600mV output off 12Vin
  • Focus of evaluation board is on ease of electrical testing with almost all parts on top side
  • Rich test interface including PMBus socket, 5V & 3.3V biases and on-board high speed dynamic test load
  • Schematic, BOM, layout and Test Report including 120A testing with 3 & 4 phases and lower cost Power Stage
Output voltage options PMP10393.1
Vin (Min) (V) 10.8
Vin (Max) (V) 13.2
Vout (Nom) (V) .6
Iout (Max) (A) 200
Output Power (W) 120
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous^Buck- Multiphase

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU784.PDF (450 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDU785.PDF (842 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRCY3.PDF (300 K)

Detailed schematic diagram for design layout and components

TIDRCY4.PDF (125 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRCY5.PDF (395 K)

Detailed overview of design layout for component placement

TIDC913.ZIP (918 K)

Design file that contains information on physical board layer of design PCB

TIDRCY6.PDF (5686 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

TPS536616-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE

Data sheet document-pdfAcrobat PDF
Power stages

CSD95372BQ5M60A Synchronous Buck NexFET™ Smart Power Stage

Data sheet document-pdfAcrobat PDF open-in-new HTML
Power stages

CSD95373BQ5M45A Synchronous Buck NexFET™ Smart Power Stage

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Technical article Power Tips: Controlling errors in measuring power-supply efficiency Jun. 15, 2015
Technical article Power Tips: Output capacitor placement in multi-phase converters Mar. 07, 2015
Test report PMP10393 Test Results (3-4 Phases Off 12 Vin) Feb. 16, 2015
Test report PMP10393 Test Results (5-6 Phases Off 12 Vin) Feb. 16, 2015

Support & training

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