Texas Instruments TPS54A20EVM-770 User Manual
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Texas Instruments TPS54A20EVM-770 User Manual

Regulator evaluation module
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TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation
module
This user's guide contains information for the TPS54A20EVM-770 evaluation module (PWR770) as well
as for the TPS54A20 dc/dc converter. Also included are the performance specifications, the schematic,
and the bill of materials for the TPS54A20EVM-770.
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Trademarks
SWIFT is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
SLVUAM8A - December 2015 - Revised March 2019
Submit Documentation Feedback
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Copyright © 2015-2019, Texas Instruments Incorporated
SLVUAM8A - December 2015 - Revised March 2019
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Summary of Contents for Texas Instruments TPS54A20EVM-770

  • Page 1: Table Of Contents

    TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation module This user’s guide contains information for the TPS54A20EVM-770 evaluation module (PWR770) as well as for the TPS54A20 dc/dc converter. Also included are the performance specifications, the schematic, and the bill of materials for the TPS54A20EVM-770.

  • Page 2: Introduction

    The following warnings and cautions are noted for the safety of anyone using or working close to the TPS54A20EVM-770. Observe all safety precautions. Warning The TPS54A20EVM-770 circuit module may become hot during operation due to dissipation of heat. Avoid contact with the board. Follow all applicable safety procedures applicable to your laboratory.

  • Page 3: Input Voltage And Output Current Summary

    TPS54A20EVM-770 VIN = 9.2 V to 14 V 0 A to 10 A Performance Specification Summary A summary of the TPS54A20EVM-770 performance specifications is provided in Table 2. Specifications are given for an input voltage of V = 12 V and an output voltage of 1.2 V, unless otherwise specified. The TPS54A20EVM-770 is designed and tested for V = 9.2 V to 14 V.

  • Page 4: Test Setup And Results

    EN(FALL) Test Setup and Results This section describes how to properly connect, set up, and use the TPS54A20EVM-770 evaluation module. The section also includes test results typical for the evaluation module and covers efficiency, output voltage regulation, load transients, loop response, output ripple, input ripple, and start-up.

  • Page 5: Evm Connectors And Test Points

    Test point at bottom (GND) of transient load circuit load resistor TP13 Analog ground (AGND) test point. SLVUAM8A – December 2015 – Revised March 2019 TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation module Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated...

  • Page 6: Tps54A20Evm-770 Efficiency

    Output Current (A) D001 Figure 1. TPS54A20EVM-770 Efficiency Figure 2 shows the efficiency for the TPS54A20EVM-770 using a semi-log scale to more easily show efficiency at lower output currents. The ambient temperature is 25°C. = 9V = 12V = 14V 0.001...

  • Page 7: Tps54A20Evm-770 Load Regulation

    Test Setup and Results www.ti.com Output Voltage Load Regulation Figure 3 shows the load regulation for the TPS54A20EVM-770. -0.2 -0.4 -0.6 -0.8 Output Current (A) D003 Figure 3. TPS54A20EVM-770 Load Regulation Measurements are given for an ambient temperature of 25°C.

  • Page 8: Tps54A20Evm-770 Transient Response

    Load Transients Figure 5 shows the TPS54A20EVM-770 response to load transients. The current step is from 0 A to 9 A. The current step slew rate is 9 A/µs. Total peak-to-peak voltage variation is as shown, including ripple and noise on the output. The transient waveform is measured using the on-board fast transient circuit.

  • Page 9: Tps54A20Evm-770 Output Ripple, 0 A Load

    Figure 8, and Figure 9 show the TPS54A20EVM-770 output voltage ripple. The load currents are 0 A, 5 A and 10 A. V = 12 V. The ripple voltage is measured directly across TP7 and TP8. V = 20 mV / div (ac coupled)

  • Page 10: Tps54A20Evm-770 Output Ripple, 10 A Load

    Figure Figure 11 Figure 12 show the TPS54A20EVM-770 input voltage ripple. The load currents are 0 A, 5 A and 10 A. V = 12 V. The ripple voltage is measured directly across TP1 and TP2. V = 50 mV / div (ac coupled)

  • Page 11: Tps54A20Evm-770 Input Ripple, 5 A Load

    SWA = 5 V / div SWB = 5 V / div Time = 200 nsec / div Figure 11. TPS54A20EVM-770 Input Ripple, 5 A Load V = 50 mV / div (ac coupled) SWA = 5 V / div...

  • Page 12: Tps54A20Evm-770 Start-Up Relative To

    Powering Up Figure 13 Figure 14 show the start-up waveforms for the TPS54A20EVM-770. In Figure 13, the output voltage ramps up as soon as the input voltage reaches the UVLO threshold as set by the R2 and R3 resistor divider network. In...

  • Page 13: 2.10 Thermal Image

    The EVM was allowed to operate at full 10 A load for > 45 minutes before the image was captured. Maximum Case Temperature = 76.3 °C Figure 15. Thermal Image SLVUAM8A – December 2015 – Revised March 2019 TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation module Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated...

  • Page 14: Board Layout

    Board Layout www.ti.com Board Layout This section provides a description of the TPS54A20EVM-770 board layout and layer illustrations. Layout The board layout for the TPS54A20EVM-770 is shown in Figure 16 through Figure 20. The top-side layer of the EVM is laid out in a manner typical of a user application. The top, bottom, and internal layers are 2- oz.

  • Page 15: Tps54A20Evm-770 Bottom-Side Layout

    Board Layout www.ti.com Figure 18. TPS54A20EVM-770 Internal Layer-1 Layout Figure 19. TPS54A20EVM-770 Internal Layer-2 Layout Figure 20. TPS54A20EVM-770 Bottom-Side Layout SLVUAM8A – December 2015 – Revised March 2019 TPS54A20EVM-770, 10-A, SWIFT™ regulator evaluation module Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated...

  • Page 16: Schematic And Bill Of Materials

    Schematic and Bill of Materials www.ti.com Schematic and Bill of Materials This section presents the TPS54A20EVM-770 schematic and bill of materials. Schematic Figure 21 is the schematic for the TPS54A20EVM-770. Vin = 9.2 V - 14 V 47uF 47uF 22uF...

  • Page 17: Tps54A20Evm-770 Bill Of Materials

    Schematic and Bill of Materials www.ti.com Bill of Materials Table 4 presents the bill of materials for the TPS54A20EVM-770. Table 4. TPS54A20EVM-770 Bill of Materials Designator Quantity Value Description Package Part Number Manufacturer Printed Circuit Board PWR770 C1, C2 10uF...
  • Page 18 Schematic and Bill of Materials www.ti.com Table 4. TPS54A20EVM-770 Bill of Materials (continued) Designator Quantity Value Description Package Part Number Manufacturer Test Point, Multipurpose, White, TH White Multipurpose 5012 Keystone Testpoint Small, 10MHz 10A, 8V to 14V Input, SWIFT Series Capacitor...
  • Page 19 Changed 1 kΩ to 14.3 kΩ .......................... • Updated Figure 6 ....................• Updated Figure 16 through Figure ........................• Updated Figure ........................• Updated Table SLVUAM8A – December 2015 – Revised March 2019 Revision History Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated...
  • Page 20 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 21 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
  • Page 22 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
  • Page 23 www.ti.com 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. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
  • Page 24 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 © 2019, Texas Instruments Incorporated...
  • Page 25 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...

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