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

(ACTIVE) PMP10393

Description & Features

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Description

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

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Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP10393.1
(Output Voltage 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-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Synchronous
Buck- Multiphase
Designed forASIC

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD95372BQ5M  60A Synchronous Buck NexFET™ Smart Power Stage  MOSFETs  Sample & Buy Not Available
CSD95373BQ5M  45A Synchronous Buck NexFET™ Smart Power Stage  MOSFETs  Sample & Buy Not Available
TPS53661  6-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE   Step-down (buck)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD95372BQ5M LSON-CLIP (DQP)| 12 Download -
TPS53661 Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (2)
Title Abstract Type Size (KB) Date Views
PDF 782 16 Feb 2015 5
PDF 391 16 Feb 2015 7
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 918 16 Feb 2015 4
PDF 5686 16 Feb 2015 3
PDF 395 16 Feb 2015 3
PDF 125 16 Feb 2015 4
PDF 300 16 Feb 2015 10

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