Texas Instruments TPS549D22EVM-784, User Manual, Page: 1 / 48

1 SLUUBG4 – July 2016
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Copyright © 2016, Texas Instruments Incorporated
TPS549D22EVM-784, 40-A Single Synchronous Step-Down Converter With
Full Differential Sense and PMBus™
PMBus is a trademark of SMIF, Inc..
All other trademarks are the property of their respective owners.
User's Guide
SLUUBG4 – July 2016
TPS549D22EVM-784, 40-A Single Synchronous Step-Down
Converter With Full Differential Sense and PMBus™
This user's guide describes the characteristics, operation, and use of the TPS549D22 Evaluation Module
(EVM). The user's guide includes test information, descriptions, and results. A complete schematic
diagram, printed-circuit board layouts, and bill of materials are also included in this document. Throughout
this user's guide, the abbreviations EVM, TPS549D22EVM, and the term evaluation module are
synonymous with the TPS549D22EVM-784, unless otherwise noted.
Contents
1 Introduction
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2 Description
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2.1 Typical End-User Applications
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2.2 EVM Features
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3 EVM Electrical Performance Specifications
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4 Schematic
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5 Test Setup
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5.1 Test and Configuration Software
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6 Test Equipment
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7 PWR-784EVM
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8 List of Test Points, Jumpers, and Switch
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9 EVM Configuration Using the Fusion GUI
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10 Test Procedure
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10.1 Line and Load Regulation Measurement Procedure
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10.2 Efficiency
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10.3 Equipment Shutdown
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11 Performance Data and Typical Characteristic Curves
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11.1 Efficiency
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11.2 Load Regulation
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11.3 Line Regulation
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11.4 Transient Response
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11.5 Output Ripple
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11.6 Control On
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11.7 Control Off
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11.8 Thermal Image
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12 Fusion GUI
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13 EVM Assembly Drawing and PCB Layout
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14 List of Materials
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List of Figures
1 PWR-784EVM Schematic
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2 PWR-784EVM Overview
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3 Tip and Barrel Measurement
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4 EVM and USB Interface Adapter
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5 Efficiency of 1-V Output vs Load
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6 Load Regulation of 1-V Output
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