Texas Instruments TPS7A57EVM-056 User Manual
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Texas Instruments TPS7A57EVM-056 User Manual

Evaluation module
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User's Guide
TPS7A57EVM-056 Evaluation Module
This user's guide describes the operational use of the TPS7A57EVM-056 evaluation module (EVM) as a
reference design for engineering demonstration and evaluation of the TPS7A57 low-dropout linear regulator
(LDO). Included in this user's guide are setup and operating instructions, thermal and layout guidelines, a
printed-circuit board (PCB) layout, schematic diagrams, and a bill of materials (BOM).
Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the
TPS7A57EVM-056.
SBVU075 – APRIL 2022
Submit Document Feedback
ABSTRACT

Figure 1-1. TPS7A57EVM-056 Evaluation Module

Copyright © 2022 Texas Instruments Incorporated
TPS7A57EVM-056 Evaluation Module
1

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Summary of Contents for Texas Instruments TPS7A57EVM-056

  • Page 1: Figure 1-1. Tps7A57Evm-056 Evaluation Module

    ABSTRACT Figure 1-1. TPS7A57EVM-056 Evaluation Module This user's guide describes the operational use of the TPS7A57EVM-056 evaluation module (EVM) as a reference design for engineering demonstration and evaluation of the TPS7A57 low-dropout linear regulator (LDO). Included in this user's guide are setup and operating instructions, thermal and layout guidelines, a printed-circuit board (PCB) layout, schematic diagrams, and a bill of materials (BOM).

  • Page 2: Table Of Contents

    Figure 2-1. TPS7A57EVM-056 Turn On............................Figure 2-2. TPS7A57EVM-056 With Current Probe Attached..................... Figure 2-3. TPS7A57EVM-056 Load Transient Results......................Figure 2-4. TPS7A57EVM-056 Load Transient Results With a Q1 MOSFET................Figure 3-1. Top Assembly Layer and Silkscreen......................... Figure 3-2. Top Layer Routing..............................

  • Page 3: Introduction

    Introduction 1 Introduction The Texas Instruments TPS7A57EVM-056 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS7A57 LDO voltage regulator. As shown in Table 1-1, the TPS7A57EVM-056 contains one TPS7A57 LDO voltage regulator in the RTE package. An optional load transient circuit is also included to assist the user with high-speed load transient testing.

  • Page 4: Optional Load Transient Input And Output Connector Descriptions

    TP13 is the enable pin to enable the gate driver device. Tie this pin to GND by creating a solder-short on J6 to enable the gate driver. TPS7A57EVM-056 Evaluation Module SBVU075 – APRIL 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 5: Tps7A57 Ldo Operation

    Setup 2.3 TPS7A57 LDO Operation The TPS7A57EVM-056 evaluation module contains the TPS7A57 low-dropout regulator (LDO) with input and output capacitors installed. Additional pads are available to test the LDO with additional input and output capacitors beyond what is already installed on the EVM. The TPS7A57 LDO can be enabled or disabled by using the J4 3-pin header.

  • Page 6: Figure 2-2. Tps7A57Evm-056 With Current Probe Attached

    LeCroy AP015 or CP031 current probes. Figure 2-2. TPS7A57EVM-056 With Current Probe Attached The user has three options for providing a DC load on the output of the TPS7A57. J17 can be used to place a DC load that flows through the current sense path and use the IOUT loop to measure the current.

  • Page 7: Optional Load Transient Circuit Operation

    Setup 2.4 Optional Load Transient Circuit Operation The TPS7A57EVM-056 evaluation module contains an optional high-performance load transient circuit to allow efficient testing of the TPS7A57 LDO load transient performance. To use the optional load transient circuit, install the correct components in accordance with the application. Modify the input and output capacitance connected to the TPS7A57 LDO to match the expected operating conditions.

  • Page 8: Figure 2-3. Tps7A57Evm-056 Load Transient Results

    Setup www.ti.com Figure 2-3. TPS7A57EVM-056 Load Transient Results Figure 2-4. TPS7A57EVM-056 Load Transient Results With a Q1 MOSFET TPS7A57EVM-056 Evaluation Module SBVU075 – APRIL 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 9: Board Layout

    Figure 3-8 illustrate the board layout for the TPS7A57EVM-056 PCB. The TPS7A57EVM-056 dissipates power, which may cause some components to experience an increase in temperature. The TPS7A57 LDO, LMG1020YFFR gate driver, and pulsed resistors R10, R11, R12, R13, and R14 are most at risk of raising to a high junction temperature during normal operation.

  • Page 10: Figure 3-5. Layer 4

    Board Layout www.ti.com Figure 3-5. Layer 4 Figure 3-6. Layer 5 Figure 3-7. Bottom Layer Routing Figure 3-8. Bottom Assembly Layer and Silkscreen TPS7A57EVM-056 Evaluation Module SBVU075 – APRIL 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 11: Tps7A57Evm-056 Schematics

    TPS7A57EVM-056 Schematics 4 TPS7A57EVM-056 Schematics Figure 4-1 Figure 4-2 illustrate schematics for the TPS7A57EVM-056 and the onboard load transient circuit, respectively. TP15 TP16 TP S 7A5701RTE TP14 Vout J 13 47µF VIN_SNS1 47µF 10uF 22µF 6.3V Min Vin= 0.7V...

  • Page 12: Figure 4-2. Load Transient Schematic

    OUTH R16 R20 TP12 100V CS D13202Q2 OUTL Gate 0.1uF 10uF 10uF 49.9 TP13 1.00k 22nF 100V 0.015uF 100V Figure 4-2. Load Transient Schematic TPS7A57EVM-056 Evaluation Module SBVU075 – APRIL 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 13: Bill Of Materials

    TPS7A57EVM-056 Schematics 5 Bill of Materials Table 5-1 shows the bill of materials for the TPS7A57EVM-056. Table 5-1. Bill of Materials Designator Quantity Value Description PackageReference PartNumber Manufacturer Alternate Alternate PartNumber Manufacturer !PCB1 Printed Circuit Board LP056 10uF CAP, CERM, 10 uF, 25 V, +/- 10%, X7R,...
  • Page 14 R17, R18, R19, R20 Resistant, Non-Magnetic, Safety Thin Film R15, R21, R23, R25 0 RES, 0, 5%, 0.125 W, AEC-Q200 Grade ERJ-6GEY0R00V Panasonic 0, 0805 TPS7A57EVM-056 Evaluation Module SBVU075 – APRIL 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 15 YFF0006AEAE LMG1020YFFR Texas Instruments LMG1020YFFT With 60MHz/1ns Speed, YFF0006AEAE (DSBGA-6) VIN_SNS1, SMA Straight Jack, Gold, 50 Ohm, TH SMA Straight Jack, 901-144-8RFX Amphenol RF SBVU075 – APRIL 2022 TPS7A57EVM-056 Evaluation Module Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 16 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 17 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 18 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 19 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 20 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 21 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...

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