Texas Instruments TPS23753AEVM-235 User Manual
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Texas Instruments TPS23753AEVM-235 User Manual

Evaluation module
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This user's guide describes the TPS23753A evaluation module (EVM) (TPS23753AEVM-235). The
TPS23753AEVM-235 contains evaluation and reference circuitry for the TPS23753A device. The
TPS23753A device is an IEEE 802.3-2005 compliant, powered-device (PD) controller and power supply
controller optimized for isolated converter topologies. TPS23753AEVM-235 is targeted at a high efficiency
10-W PD solution.
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SLVUA27A - January 2014 - Revised March 2014
Submit Documentation Feedback
TPS23753AEVM-235 Evaluation Module
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Copyright © 2014, Texas Instruments Incorporated
SLVUA27A - January 2014 - Revised March 2014
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Summary of Contents for Texas Instruments TPS23753AEVM-235

  • Page 1: Table Of Contents

    TPS23753AEVM-235 contains evaluation and reference circuitry for the TPS23753A device. The TPS23753A device is an IEEE 802.3-2005 compliant, powered-device (PD) controller and power supply controller optimized for isolated converter topologies. TPS23753AEVM-235 is targeted at a high efficiency 10-W PD solution.

  • Page 2: Introduction

    Introduction www.ti.com Introduction The TPS23753AEVM-235 allows reference circuitry evaluation of the TPS23753A device. It contains input and output power connectors and an array of onboard test points for circuit evaluation. Features • High-efficiency synchronous flyback converter • Class 3, 5-V 2-A 10-W DC output Applications •...

  • Page 3: Description

    Description www.ti.com Description The TPS23753AEVM-235 enables full evaluation of the TPS23753A device. Refer to the schematic shown Figure 1. Ethernet power is applied from J1 and is dropped to the bridge rectifier (D1, D2, D3, D4, Q1, Q2, R1, R2, R3, R4, R5, R6, R7, R8). The Power over Ethernet (PoE) transformer needed to transfer power or data is internal to J1.

  • Page 4: Schematic

    TLV431AIDBVR 90.9 100 V SMAJ58A 14.3 k 0.25 W 0.047 F µ 50 V Not Installed Figure 1. TPS23753AEVM-235 Schematic TPS23753AEVM-235 Evaluation Module SLVUA27A – January 2014 – Revised March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 5: General Configuration And Description

    EVM. Ethernet Device VOUT TPS23753AEVM-235 Ethernet Cable DC Supply (If No PSE) Figure 2. Typical TPS23753AEVM-235 Test Setup SLVUA27A – January 2014 – Revised March 2014 TPS23753AEVM-235 Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 6: Tps23753Aevm-235 Performance Data

    TPS23753AEVM-235 Performance Data www.ti.com TPS23753AEVM-235 Performance Data Startup Figure 3 shows the startup response of the TPS23753AEVM-235. Figure 3. Startup Response to Full Load (2 A) for a 48-V Input Transient Response Figure 4 shows the transient response of the TPS23753AEVM-235.

  • Page 7: Efficiency

    TPS23753AEVM-235 Performance Data www.ti.com Efficiency Figure 5 shows the efficiency of the TPS23753AEVM-235. 48 V at J1 48 V at J4 Iout (A) C001 Figure 5. Efficiency of the TPS23753AEVM-235 SLVUA27A – January 2014 – Revised March 2014 TPS23753AEVM-235 Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 8: Evm Assembly Drawings And Layout Guidelines

    EVM Assembly Drawings and Layout Guidelines PCB Drawings Figure 6 Figure 11 show the component placement and layout of the TPS23753AEVM-235. Figure 6. Top-Side Component Placement Figure 7. Top-Side Routing TPS23753AEVM-235 Evaluation Module SLVUA27A – January 2014 – Revised March 2014 Submit Documentation Feedback Copyright ©...

  • Page 9: Layer 2 Routing

    EVM Assembly Drawings and Layout Guidelines www.ti.com Figure 8. Layer 2 Routing Figure 9. Layer 3 Routing SLVUA27A – January 2014 – Revised March 2014 TPS23753AEVM-235 Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 10: Bottom-Side Routing

    EVM Assembly Drawings and Layout Guidelines www.ti.com Figure 10. Bottom-Side Routing Figure 11. Bottom Component Placement TPS23753AEVM-235 Evaluation Module SLVUA27A – January 2014 – Revised March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 11: Layout Guidelines

    Keep the high-current and high-voltage switching away from low-level sensing circuits including those outside the power supply • Proper spacing around the high-voltage sections of the converter SLVUA27A – January 2014 – Revised March 2014 TPS23753AEVM-235 Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 12: Emi Containment

    • Possible use of integrated RJ-45 jacks (shielded with internal transformer and Bob Smith terminations) • End-product enclosure considerations (shielding) TPS23753AEVM-235 Evaluation Module SLVUA27A – January 2014 – Revised March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...

  • Page 13: Bill Of Materials

    These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable. These assemblies must comply with workmanship standards IPC-A-610 Class 2. SLVUA27A – January 2014 – Revised March 2014 TPS23753AEVM-235 Evaluation Module Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...
  • Page 14 NA6223-AL Transformer, Flyback 12.7x17.75 NA6223-AL Coilcraft 750314433 Wurth Electronics PCB, 3.7 In x 1.6 In x 0.062 In PWR235 TPS23753AEVM-235 Evaluation Module SLVUA27A – January 2014 – Revised March 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...
  • Page 15 • Changed the Bill of Materials NOTE: Page numbers for previous revisions may differ from page numbers in the current version. SLVUA27A – January 2014 – Revised March 2014 Revision History Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated...
  • Page 16 ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR EVALUATION MODULES Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following: 1.
  • Page 17 RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold, or loaned to users may or may not be subject to radio frequency regulations in specific countries.
  • Page 18 Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2014, Texas Instruments Incorporated spacer Important Notice for Users of EVMs Considered “Radio Frequency Products”...
  • Page 19 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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