TPS40400 Step-Down Regulator with PMBus Delivering 1.8V at 4A Reference Design

(ACTIVE) PMP11140

Description & Features

Technical Documents

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Key Document

Description

PMP11140 is a single-phase switching regulator accepting an input range of 4.5V to 13.2V and providing an output voltage of 1.8V capable of supplying 4A of current. This reference design shows 1.8Vout, 4A (3A without a fan) for CPU I/O and other applications in a 22cm by 12.6cm single sided footprint. A rich test interface including an on board dynamic load is provided.

Features
  • PMBus programming, configuration, control, and telemetry
  • 85% peak efficiency
  • Well documented thermal performance both with and without fan.
  • On board high speed dynamic test load to verify dynamic performance
  • 0.9” x 0.5” total power supply area with all parts on same side
  • Supported by TI’s Fusion GUI PMBus designer FUSION_DIGITAL_POWER_DESIGNER

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP11140.1
(Output Voltage 1)
Vin (Min) (V)4.5
Vin (Max) (V)13.2
Vout (Nom) (V)1.8
Iout (Max) (A)4
Output Power (W)7.2
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous
Designed forProcessor

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17313Q2  30V N Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD85301Q2  CSD85301Q2 Dual N-Channel NexFET™ Power MOSFET   MOSFETs  Sample & Buy Not Available
TPS40400  3.0V - 20V, 30A, Synchronous Buck Controller with PMBus™, including Telemetry  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17313Q2 WSON (DQK)| 6 Download -
CSD85301Q2 WSON (DQK)| 6 Download Download
TPS40400 Download -

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Technical Documents

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

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2176 15 Jul 2015 7
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 974 10 Nov 2015 63
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 385 15 Jul 2015 8
PDF 1381 15 Jul 2015 4
PDF 173 15 Jul 2015 4
PDF 116 15 Jul 2015 7
PDF 196 15 Jul 2015 11

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