Texas Instruments TPS53129EVM-621 User Manual
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Texas Instruments TPS53129EVM-621 User Manual

Texas Instruments TPS53129EVM-621 User Manual

Evaluation module
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The TPS53129EVM-621 Evaluation Module presents an easy-to-use reference design for a common
dual-output power supply using the TPS53129 controller in cost-sensitive applications.
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Efficiency vs Load
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Output Voltage vs Load
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Output Voltage Ripple
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Switching Waveform
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SLVU432 - February 2011
Submit Documentation Feedback
TPS53129EVM-621 Evaluation Module
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© 2011, Texas Instruments Incorporated
Contents
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List of Figures
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List of Tables
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TPS53129EVM-621 Evaluation Module
User's Guide
SLVU432 - February 2011
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Summary of Contents for Texas Instruments TPS53129EVM-621

  • Page 1: Table Of Contents

    User's Guide SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module The TPS53129EVM-621 Evaluation Module presents an easy-to-use reference design for a common dual-output power supply using the TPS53129 controller in cost-sensitive applications. Contents ........................Introduction ..................Electrical Performance Specifications ........................Schematics ..................

  • Page 2: Introduction

    Providing both a low core-type 1.05-V and I/O type 1.8-V output at up to 4 A from a loosely regulated 12-V (8-V to 22-V) source, the TPS53129EVM-621 includes switches and test points to assist users in evaluating the performance of the TPS53129 controller in their application.

  • Page 3: Schematics

    Schematics www.ti.com Schematics NOTE: For Reference Only, See Table 3 for Specific Values. Figure 1. TPS53129EVM-621 Schematic SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 4: Connector And Test Point Descriptions

    Connector and Test Point Descriptions Enable Switches – SW1 and SW2 TPS53129EVM-621 includes independent enable switches for each of the two outputs. When the switch is in the DIS position, the channel is disabled and discharged per the TPS53129’s internal discharge characteristics.

  • Page 5: Test Setup

    Channel-2 Output Voltage Monitoring – TP6 and TP7 TPS53129EVM-621 provides two test points for measuring the voltage generated at the VOUT2 output by the module. This allows the user to measure the actual output voltage without losses from output cables and connectors.
  • Page 6 Recommended Wire Gauge to J3 – The connection between the source voltage VIN and J1 of TPS53129EVM-621 can carry as much as 2 Adc. The minimum recommended wire size is AWG 16 with the total length of wire less than 2 feet (1-foot input, 1-foot return).

  • Page 7: Test Procedure

    LOAD1 1.05V @ LOAD2 1.8V @ Figure 3. TPS53129EVM-621 Recommended Test Setup Test Procedure Start-Up Procedure 1. Prior to connecting the dc input source VIN, it is advisable to limit the source current from V to 2 Adc maximum. Ensure that V is initially set to 0 V.

  • Page 8: Performance Data And Typical Characteristic Curves

    Figure 4 through Figure 11 present typical performance curves for the TPS53129EVM-621. Because actual performance data can be affected by measurement techniques and environmental variables, these curves are presented for reference and may differ from actual field measurements. TPS53129EVM-621 Evaluation Module SLVU432 –...

  • Page 9: Efficiency Vs Load

    V = 8 V-22 V, = 1.8 V, OUT2 = 0 A-4 A OUT1 - Load Current - A LOAD Figure 5. Efficiency vs Load SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 10: Output Voltage Vs Load

    1.82 1.815 V = 12 V 1.81 V = 8 V 1.805 1.795 - Load Current - A LOAD Figure 7. Output Voltage vs Load TPS53129EVM-621 Evaluation Module SLVU432 – February 2011 Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 11: Output Voltage Ripple

    Output Ripple Figure 8. Output Voltage Ripple TPS53129EVM-621 Test condition: Vin 12 V, Vo2 1.8 V, 4 A Output Ripple Figure 9. Output Voltage Ripple SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 12: Evm Assembly Drawings And Layout

    Figure 17) show the design of the TPS53129EVM-621 printed-circuit board (PCB). The EVM has been designed using a 4-layer, 2-oz copper-clad circuit board of 3.5 inch by 2.7 inch to allow the user to easily view, probe, and evaluate the TPS53129 control integrated circuit in a practical application.

  • Page 13: Top Assembly

    EVM Assembly Drawings and Layout www.ti.com Figure 12. Top Assembly Figure 13. Bottom Assembly SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 14: Top Layer

    EVM Assembly Drawings and Layout www.ti.com Figure 14. Top Layer Figure 15. Bottom Layer TPS53129EVM-621 Evaluation Module SLVU432 – February 2011 Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 15: Internal Layer 1

    EVM Assembly Drawings and Layout www.ti.com Figure 16. Internal Layer 1 Figure 17. Internal Layer 2 SLVU432 – February 2011 TPS53129EVM-621 Evaluation Module Submit Documentation Feedback © 2011, Texas Instruments Incorporated...

  • Page 16: Bill Of Materials

    Bill of Materials www.ti.com Bill of Materials Table 3 contains the bill of materials for the TPS53129EVM-621. The reference designators refer to the schematic in Figure 1 and assembly locations in Figure 12 Figure 13. Components with a quantity of 0 listed are not populated on the PCB but are provided for reference.
  • Page 17 Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
  • Page 18 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.

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