Texas Instruments TPS54240EVM-VSON User Manual
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Texas Instruments TPS54240EVM-VSON User Manual

Regulator evaluation module
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TPS54240EVM-VSON Regulator Evaluation Module
This user's guide contains information for the TPS54240EVM-VSON evaluation module. Included are the
performance specifications, the schematic, and the bill of materials for the TPS54240EVM-VSON.
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TPS54240EVM-VSON Power-Good Output (Pulled up to external 3.3 V)
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SNVU602 - May 2019
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Copyright © 2019, Texas Instruments Incorporated
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User's Guide
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Summary of Contents for Texas Instruments TPS54240EVM-VSON

  • Page 1: Table Of Contents

    User's Guide SNVU602 – May 2019 TPS54240EVM-VSON Regulator Evaluation Module This user's guide contains information for the TPS54240EVM-VSON evaluation module. Included are the performance specifications, the schematic, and the bill of materials for the TPS54240EVM-VSON. Contents ........................Introduction ..................... Test Setup and Results ...................
  • Page 2 Trademarks Eco-mode is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. TPS54240EVM-VSON Regulator Evaluation Module SNVU602 – May 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 3: Introduction

    This user's guide contains background information for the TPS54240 as well as support documentation for the TPS54240EVM-VSON evaluation module, which is for the VSON package. Also included are the performance specifications, the schematic, and the bill of materials for the TPS54240EVM-VSON.

  • Page 4: Test Setup And Results

    = 12 V Test Setup and Results This section describes how to properly connect, set up, and use the TPS54240EVM-VSON 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: Top View Of Tps54240Evm-Vson

    Test Setup and Results www.ti.com Figure 1. Top View of TPS54240EVM-VSON Table 3. EVM Connectors and Test Points REFERENCE DESIGNATOR FUNCTION (see Table 1 for V range) , 3.3 V at 2.5 A maximum Input and output GND test point at V...

  • Page 6: Tps54240Evm-Vson Efficiency

    TPS54240EVM-VSON at an ambient temperature of 25°C. Figure 2. TPS54240EVM-VSON Efficiency Figure 3 shows the efficiency for the TPS54240EVM-VSON at lower output currents between 0.001 A and 0.5 A at an ambient temperature of 25°C. Figure 3. TPS54240EVM-VSON Low Current Efficiency The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to- source resistance of the internal MOSFET.

  • Page 7: Tps54240Evm-Vson Load Regulation

    Test Setup and Results www.ti.com Output Voltage Load Regulation The load regulation for the TPS54240EVM-VSON is shown in Figure Figure 4. TPS54240EVM-VSON Load Regulation Measurements are given for an ambient temperature of 25°C. SNVU602 – May 2019 TPS54240EVM-VSON Regulator Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 8: Tps54240Evm-Vson Transient Response

    Test Setup and Results www.ti.com Load Transients The TPS54240EVM-VSON response to load transients is shown in Figure 5. The current step is from 0.5 A to 2.5 A . The input voltage is 12 V. Total peak-to-peak voltage variation is as shown, including ripple and noise on the output.

  • Page 9: Tps54240Evm-Vson Output Voltage Ripple In Ccm Mode At 2.5-A I

    When the output current is less than one half the peak to peak inductor current, the circuit is operating in discontinuous conduction mode (DCM). The circuit enters DCM when the nominal output current falls below 400 mA. The TPS54240EVM-VSON output voltage ripple in DCM mode is shown in Figure 7 At light load currents, the TPS54240 is designed to operate in the pulse-skipping Eco-mode™...

  • Page 10: Tps54240Evm-Vson Input Voltage Ripple In Ccm Mode At 2.5-A I

    The TPS54240EVM-VSON input voltage ripple in DCM mode is shown in Figure 10. The output current is 200 mA. The TPS54240EVM-VSON input voltage ripple in Eco-mode is shown in Figure 11. The output current is 20 mA. Vout = 200 mV / div (ac coupled)

  • Page 11: Tps54240Evm-Vson Start-Up

    Power Good = 5 V / div Power Good = 5 V / div Time = 5msec / div Time = 5msec / div Figure 14. TPS54240EVM-VSON Power-Good Output Figure 13. TPS54240EVM-VSON Power-Good Output (Pulled up to external 3.3 V) (pulled up to V SNVU602 –...

  • Page 12: Tps54240Evm-Vson Loop Response

    Test Setup and Results www.ti.com Loop Characteristics The TPS54240EVM-VSON loop-response characteristics are shown in Figure 15 . Gain and phase plots are shown for V voltage of 12V. Load current for the measurement is 2.5 A. Figure 15. TPS54240EVM-VSON Loop Response TPS54240EVM-VSON Regulator Evaluation Module SNVU602 –...

  • Page 13: Schematic And Bill Of Materials

    Schematic and Bill of Materials www.ti.com Schematic and Bill of Materials This section presents the TPS54240EVM-VSON schematic and bill of materials. Schematic Figure 16 is the schematic for the TPS54240EVM-VSON. Figure 16. TPS54240EVM-VSON Schematic SNVU602 – May 2019 TPS54240EVM-VSON Regulator Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 14: Bill Of Materials

    Schematic and Bill of Materials www.ti.com Bill of Materials Table 4 presents the bill of materials for the TPS54240EVM-VSON. Table 4. Bill of Materials Designator Value Description Package PartNumber Manufacturer C1, C2 2.2uF CAP, CERM, 2.2 uF, 100 V, +/-...

  • Page 15: Board Layout

    Board Layout www.ti.com Board Layout This section provides a description of the TPS54240EVM-VSON, board layout, and layer illustrations. Layout The board layout for the TPS54240EVM-VSON is shown in Figure 17 through Figure 18. The EVM offers resistors, capacitors and test points to configure the output voltage, enable (EN) pin, set frequency, and external clock synchronization.

  • Page 16: Tps54240Evm-Vson Bottom-Side Assembly

    Board Layout www.ti.com Figure 18. TPS54240EVM-VSON Bottom-Side Assembly Figure 19. TPS54240EVM-VSON Top-Side Layout TPS54240EVM-VSON Regulator Evaluation Module SNVU602 – May 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 17: Tps54240Evm-Vson Mid-Layer 1 Layout

    Board Layout www.ti.com Figure 20. TPS54240EVM-VSON Mid-Layer 1 Layout Figure 21. TPS54240EVM-VSON Mid-Layer 2 Layout SNVU602 – May 2019 TPS54240EVM-VSON Regulator Evaluation Module Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 18: Tps54240Evm-Vson Bottom-Side Layout

    Board Layout www.ti.com Figure 22. TPS54240EVM-VSON Bottom-Side Layout Estimated Circuit Area The estimated printed-circuit board area for the components used in this design is about 1.5 in . This area does not include test points or connectors. TPS54240EVM-VSON Regulator Evaluation Module SNVU602 –...

  • Page 19: Output Voltages Available

    R and R sets the UVLO start and stop voltages. See the TPS54240 device data sheet for details on adjusting these parameters. SNVU602 – May 2019 TPS54240EVM-VSON Regulator Evaluation Module Submit Documentation Feedback Copyright © 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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