Texas Instruments TPS53125EVM-599 User Manual
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Texas Instruments TPS53125EVM-599 User Manual

Texas Instruments TPS53125EVM-599 User Manual

Texas instruments power supply user manual
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The TPS53125EVM-599 Evaluation Module presents an easy-to-use reference design for a common dual
output power supply using the TPS53125 controller in cost-sensitive applications. Also included are the
schematic, board layout, and bill of materials.
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TPS53125EVM-599 Schematic
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D-CAP2 is a trademark of Texas Instruments.
SLVU392 - July 2010
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Copyright © 2010, Texas Instruments Incorporated
TPS53125EVM-599
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User's Guide
SLVU392 - July 2010
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TPS53125EVM-599

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Summary of Contents for Texas Instruments TPS53125EVM-599

  • Page 1: Table Of Contents

    The TPS53125EVM-599 Evaluation Module presents an easy-to-use reference design for a common dual output power supply using the TPS53125 controller in cost-sensitive applications. Also included are the schematic, board layout, and bill of materials. Description Applications Features TPS53125EVM-599 Electrical Performance Specifications...

  • Page 2: Slvu392 – July

    1.05-V and I/O-type, 1.8-V outputs at up to 4 A from a loosely regulated 12-V (8-V to 22-V) source, the TPS53125EVM-599 includes switches and test points to assist users in evaluating the performance of the TPS53125 controller in their applications.

  • Page 3: Tps53125Evm-599 Schematic

    TPS53125EVM-599 Schematic www.ti.com TPS53125EVM-599 Schematic For Reference Only, See Table x: for Specific Values Figure 1. TPS53125EVM-599 Schematic SLVU392 – July 2010 TPS53125EVM-599 Copyright © 2010, Texas Instruments Incorporated...

  • Page 4: Connector And Test Point Descriptions

    4.2.1 Input Voltage Monitoring – TPS and TP9 The TPS53125EVM-599 provides two test points for measuring the voltage applied to the module. This allows the user to measure the actual module voltage without losses from input cables and connectors. Measure all input voltage measurements between TP9 and TP3. To use TP9 and TP3, connect a voltmeter positive terminal to TP9 and negative terminal to TP3.

  • Page 5: Test Setup

    4.2.6 5-V Regulator Output Monitoring – TP3 and TP10 TPS53125EVM-599 provides a test point for measuring the output of the internal 5-V regulator. TP10 monitors the output voltage of the internal 5-V regulator. To use TP10, connect a voltmeter positive terminal to TP10 and negative terminal to TP3.

  • Page 6: Equipment Setup

    J1 to LOAD1 and J2 to LOAD2 - The connection between J1 and LOAD1 and J2 and LOAD2 of TPS53125EVM-599 can carry as much as 4 Adc each. The minimum recommended wire size is AWG #14, with the total length of wire less than 2 feet (1-foot input, 1-foot return).

  • Page 7: Start-Up/Shutdown Procedures

    5.2.2 Test Setup Diagram Figure 2. TPS53125EVM-599 Recommended Test Setup Start-Up/Shutdown Procedures Perform the start-up and shutdown procedures in the following manner. 1. Increase V from 0 V to 12 Vdc. 2. Vary LOAD1 from 0 V – 4 Adc.

  • Page 8: Output Ripple Voltage Measurement Procedure

    TPS53125EVM-599 Test Data Figure 3 through Figure 10 present typical performance curves for the TPS53125EVM-599. 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. Efficiency = 8 V –...

  • Page 9: Line And Load Regulation

    1.055 1.05 = 8 V – 22 V, V = 1.05 V, I OUT1 Figure 5. TPS53125EVM-599 Output Voltage vs Load Current SLVU392 – July 2010 V = 12 V V = 22 V - Load Current - A LOAD = 0 A –...

  • Page 10: Output Voltage Ripple And Switching Node Waveforms

    Output Voltage Ripple and Switching Node Waveforms = 12, V = 1.05, I = 4 A OUT1 OUT1 Figure 7. TPS53125EVM-599 Output Voltage Ripple and Switching Waveform TPS53125EVM-599 V = 22 V V = 12 V V = 8 V - Load Current - A LOAD = 0 A –...

  • Page 11: Switch Node

    = 12, V = 1.80, I = 4 A OUT2 OUT2 Figure 8. TPS53125EVM-599 Output Voltage Ripple Switch Node = 12, V = 1.05, I = 4A, OUT1 OUT1 Ch1: TP5 (SW1) Figure 9. TPS53125EVM-599 Switching Waveforms SLVU392 – July 2010 Copyright ©...

  • Page 12: Tps53125Evm-599 Assembly Drawings And Layout

    2.7 to allow the user to easily view, probe, and evaluate the TPS53125 control IC in a practical application. Moving components to both sides of the PCB or using additional internal layers can offer additional size reduction for space-constrained systems. Figure 11. TPS53125EVM-599 Component Placement, Viewed From Top TPS53125EVM-599 through...

  • Page 13: Tps53125Evm-599 Top Copper, Viewed From Top

    TPS53125EVM-599 Assembly Drawings and Layout www.ti.com Figure 12. TPS53125EVM-599 Top Copper, Viewed From Top Figure 13. TPS53125EVM-599 Bottom Copper, Viewed From Bottom SLVU392 – July 2010 TPS53125EVM-599 Copyright © 2010, Texas Instruments Incorporated...

  • Page 14: Tps53125Evm-599 Internal 1, X-Ray View From Top

    TPS53125EVM-599 Assembly Drawings and Layout Figure 14. TPS53125EVM-599 Internal 1, X-Ray View From Top Figure 15. TPS53125EVM-599 Internal 2, X-Ray View From Top TPS53125EVM-599 Copyright © 2010, Texas Instruments Incorporated www.ti.com SLVU392 – July 2010...

  • Page 15: Tps53125Evm-599 Bill Of Materials

    TPS53125EVM-599 Bill of Materials Table 3 contains the bill of materials for TPS53125EVM-599. The reference designators reference the schematic in Figure 1 and assembly locations in not populated on the PCB but are provided for reference. Table 3. TPS53125EVM-599 Bill of Materials...

  • Page 16: Fcc Warning

    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 17: 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. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

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