Texas Instruments TPS548D21EVM-784 User Manual
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Texas Instruments TPS548D21EVM-784 User Manual

Texas Instruments TPS548D21EVM-784 User Manual

40-a single synchronous step-down converter with full differential sense
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TPS548D21EVM-784, 40-A Single Synchronous Step-Down
This user's guide describes the characteristics, operation, and use of the TPS548D21 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, TPS548D21EVM, and the term evaluation module are
synonymous with the TPS548D21EVM-784, unless otherwise noted.
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9.3
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9
Transient Response of 1-V Output at 12 V
10
Output Ripple and SW Node of 1-V Output at 12 V
All trademarks are the property of their respective owners.
SLUUBG3A - July 2016 - Revised August 2016
Submit Documentation Feedback
Converter With Full Differential Sense
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Copyright © 2016, Texas Instruments Incorporated
SLUUBG3A - July 2016 - Revised August 2016
Contents
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List of Figures
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IN
User's Guide
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Full Differential Sense
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Summary of Contents for Texas Instruments TPS548D21EVM-784

  • Page 1: Table Of Contents

    (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, TPS548D21EVM, and the term evaluation module are synonymous with the TPS548D21EVM-784, unless otherwise noted. Contents ........................

  • Page 2: Introduction

    • Regulated 1-V output up to 40-A, steady-state output current • Convenient test points for probing critical waveforms TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 3: Evm Electrical Performance Specifications

    = 12 V, I = 18 A, F = 650 kHz Operating temperature ºC oper SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 4: Schematic

    100k 22.1k AGND Copyright © 2016, Texas Instruments Incorporated Figure 1. PWR-784EVM Schematic TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full SLUUBG3A – July 2016 – Revised August 2016 Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 5: Test Equipment

    This recommended wire gauge and length should achieve a voltage drop of no more than 0.2 V at the maximum 40-A load. SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback...

  • Page 6: Pwr-784Evm

    Probe Tip and Barrel V Ripple Measurement Figure 3. Tip and Barrel Measurement TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 7: List Of Test Points, Jumpers, And Switch

    T-H loop ALERT Not used 2-pin jumper CNTL Shunts control pin to GND SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 8: Test Procedure

    Using these measurement points result in efficiency measurements that do not include losses due to the connectors and PCB traces. TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016...

  • Page 9: Equipment Shutdown

    12 V 16 V 0.99 D002 Figure 5. Load Regulation of 1-V Output SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 10: Line Regulation

    0.99 D003 Figure 6. Line Regulation of 1-V Output Figure 7. Real Tracking POD, 256 µs PGD 8 ms TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback...

  • Page 11: Sequencing Pod, 256 Μs Pgd 8 Ms Ext Ss Pulldown Pg

    Figure 8. Sequencing POD, 256 µs PGD 8 ms Ext SS Pulldown PG SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 12: Transient Response

    Transient Response Figure 9. Transient Response of 1-V Output at 12 V , Transient is 8 A to 32 A, 2.5 A/µs TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback Copyright ©...

  • Page 13: Output Ripple

    Figure 11. Output Ripple and SW Node of 1-V Output at 12 V , 40-A Output SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 14: Control On

    , 40-A Output Figure 13. 0.5-V Pre-bias start up from Control, 1-V Output at 12 V , 40-A Output TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback...

  • Page 15: Control Off

    Figure 14. Soft Stop from Control, 1-V Output at 12 V , 40-A Output SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 16: Thermal Image

    Thermal Image Figure 15. Thermal Image at 1-V Output at 12 V , 40-A Output TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 17: Evm Assembly Drawing And Pcb Layout

    Figure 16. PWR-784EVM Top Layer Assembly Drawing (Top View) Figure 17. PWR-784EVM Top Solder Mask (Top View) SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 18: Pwr-784Evm Top Layer (Top View)

    EVM Assembly Drawing and PCB Layout www.ti.com Figure 18. PWR-784EVM Top Layer (Top View) Figure 19. PWR-784EVM Inner Layer 1 (Top View) TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback...

  • Page 19: Pwr-784Evm Inner Layer 2 (Top View)

    Figure 20. PWR-784EVM Inner Layer 2 (Top View) Figure 21. PWR-784EVM Inner Layer 3 (Top View) SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 20: Pwr-784Evm Inner Layer 4 (Top View)

    EVM Assembly Drawing and PCB Layout www.ti.com Figure 22. PWR-784EVM Inner Layer 4 (Top View) Figure 23. PWR-784EVM Bottom Layer (Top View) TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With SLUUBG3A – July 2016 – Revised August 2016 Full Differential Sense Submit Documentation Feedback...

  • Page 21: Pwr-784Evm Bottom Solder Mask (Top View)

    Figure 24. PWR-784EVM Bottom Solder Mask (Top View) Figure 25. PWR-784EVM Bottom Overlay Layer (Top View) SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 22: List Of Materials

    CAP, TA, 330 µF, 6.3 V, +/- 20%, 0.025 ohm, SMD 7.3x2.8x4.3mm 6TPE330ML Sanyo TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full SLUUBG3A – July 2016 – Revised August 2016 Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
  • Page 23 TP20, TP21, TP22 White Test Point, Multipurpose, White, TH White Multipurpose 5012 Keystone Testpoint SLUUBG3A – July 2016 – Revised August 2016 TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With Full Differential Sense Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
  • Page 24 Changes from Original (July 2016) to A Revision ......................Page ........• Added and edited steps in the Line and Load Regulation Measurement Procedure section. Revision History SLUUBG3A – July 2016 – Revised August 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
  • Page 25 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
  • Page 26 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 27 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
  • Page 28 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated...
  • Page 29 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.

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