Texas Instruments TPS51200 User Manual
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Texas Instruments TPS51200 User Manual

Texas Instruments TPS51200 User Manual

Evm sink/source ddr termination regulator
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Using theTPS51200 EVM Sink/Source DDR Termination
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References
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I/O and Jumper Connections
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List of Materials
SLUU323 - JUNE 2008
Submit Documentation Feedback
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Contents
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List of Figures
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List of Tables
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Using theTPS51200 EVM Sink/Source DDR Termination Regulator
User's Guide
SLUU323 - JUNE 2008
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  • Page 1: Table Of Contents

    User's Guide SLUU323 – JUNE 2008 Using theTPS51200 EVM Sink/Source DDR Termination Regulator Contents ........................Introduction ........................Description ..................Electrical Performance Specifications ........................Test Setup ....................... Test Procedure ..............Performance Data and Typical Characteristic Curves ......................EVM Assembly ......................List of Materials ........................

  • Page 2: Introduction

    TPS51200. Background The TPS51200 is designed to provide proper termination voltage and a 10-mA buffered reference voltage for DDR memory which covered DDR (2.5 V/1.25 V), DDR2 (1.8 V/0.9 V), DDR3 (1.5 V/0.75 V), LP DDR3 (1.2 V/0.6 V) specifications with a minimum of external components.

  • Page 3: Electrical Performance Specifications

    Electrical Performance Specifications www.ti.com Electrical Performance Specifications Performance Specification Summary Table 1. TPS51120 Performance Specification Summary SPECIFICATION TEST CONDITIONS UNIT Input voltage range, (V VDDQ voltage range (V VDDQ VLDOIN Voltage range (V VLDOIN VTT TERMINATION VOLTAGE 1.25 VTTREF 1.25 DDR2 VTTREF 0.75...

  • Page 4: Evm Schematic

    Electrical Performance Specifications www.ti.com Figure 1. EVM Schematic Using theTPS51200 EVM Sink/Source DDR Termination Regulator SLUU323 – JUNE 2008 Submit Documentation Feedback...

  • Page 5: Evm Schematic

    Electrical Performance Specifications www.ti.com Figure 2. EVM Schematic SLUU323 – JUNE 2008 Using theTPS51200 EVM Sink/Source DDR Termination Regulator Submit Documentation Feedback...

  • Page 6: Test Setup

    Test Setup www.ti.com Test Setup This section shows the test setups used and the tests performed in evaluating the EVM. See the TPS51120 data sheet (SLUS670) for complete details regarding the operation and specifications. Equipment 4.1.1 Voltage Source Table 2. I/O and Jumper Connections JACK CONNECTION The input voltage source 1 should be a 0 V to 10 V variable DC source capable of supplying 1Adc.

  • Page 7: Recommended Test Setup

    Test Setup www.ti.com Recommended Test Setup DC Source 3 DC Source 2 DC Source 4 DC source1 VLDOIN VDDQ 5VINPUT Vin 3.3V 1.2V-2.5V 1.2V-2.5V VTTLoad1 1.25V/0.6V 20M Hz 1M W , AC Oscilloscope Figure 3. Recommended Test Setup SLUU323 – JUNE 2008 Using theTPS51200 EVM Sink/Source DDR Termination Regulator Submit Documentation Feedback...
  • Page 8 Test Setup www.ti.com List of Test Points Table 3 lists the functions of each test point. Table 3. Test Points TEST POINTS NAME DESCRIPTION 3.3V or 2.5V input GND for V and VDDQ measurement VDDQ VDDQ input 1.2 V to 2.5 V VLDOIN VLDOIN input 1.2 V to 2.5 V GND for VLDOIN measurement...

  • Page 9: Test Procedure

    2. Ensure DC Source 4 is OFF. 3. Increase V (DC Source 1) from 0 V to 3.3 V at J1. This is the bias supply required for TPS51200 operation. Using V1, verify V voltage is between 3.25 V and 3.35 V.
  • Page 10 2. Ensure DC Source 4 is OFF. 3. Increase V (DC Source 1) from 0 V to 3.3 V at J1. This is the bias supply required for TPS51200 operation. Using V1, verify that V measures between 3.25 V and 3.35 V.
  • Page 11 2. Ensure DC Source 4 is OFF. 3. Increase V (DC Source 1) from 0 V to 3.3 V at J1. This is the bias supply required for TPS51200 operation. Using V1, verify that V is between 3.25 V and 3.35 V.
  • Page 12 2. Ensure that the DC Source 4 is OFF. 3. Increase V (DC Source 1) from 0 V to 3.3 V at J1. This is the bias supply required for TPS51200 operation. Using V1, verify that the V voltage is between 3.25 V and 3.35 V.

  • Page 13: Control Loop Measurement Setup

    Test Procedure www.ti.com Loop Measurement (TP10, TP11 and TP14) TPS51200EVM contains a 10-Ω series resistor in the feedback loop. The control loop measurement set up as shown in Figure Figure 4. Control Loop Measurement Setup 5.5.1 Control Loop Measurement Process 1.

  • Page 14: Performance Data And Typical Characteristic Curves

    Performance Data and Typical Characteristic Curves www.ti.com Performance Data and Typical Characteristic Curves OUTPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT CURRENT 0.79 0.758 = 2.5 V 0.78 0.757 = 3.3 V 0.77 0.756 0.76 0.75 0.755 0.74 0.73 0.754 0.72 0.753 0.71 0.752...

  • Page 15: Evm Assembly

    EVM Assembly www.ti.com Test condition: VTT Sink/Source 1 A, VTT Test Condition: V =3.3 V, transient load regulation: 22 mV, Test point: =1.5 V, V =0.75 VDDQ VLDOIN VTTREF VTT TP7 (+) and TP6 (–) V, I =1 A Source Test Results: Phase margin: 43.8°, Figure 9.

  • Page 16: Bottom Side Assembly

    EVM Assembly www.ti.com Figure 12. Bottom Side Assembly Figure 13. Bottom Side Copper Using theTPS51200 EVM Sink/Source DDR Termination Regulator SLUU323 – JUNE 2008 Submit Documentation Feedback...

  • Page 17: Top Side Copper

    EVM Assembly www.ti.com Figure 14. Top Side Copper SLUU323 – JUNE 2008 Using theTPS51200 EVM Sink/Source DDR Termination Regulator Submit Documentation Feedback...

  • Page 18: List Of Materials

    List of Materials www.ti.com List of Materials Table 4 lists the materials required for the TPS51120EVM. Table 4. List of Materials REFERENCE VALUE DESCRIPTION SIZE PART NUMBER DESIGNATOR C1, C3, C4, C6, 10 µF Capacitor, Ceramic, 10 V, X7R, ±10% C7, C8, C9, C10, 0805 1 µF...
  • Page 19 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 20 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.
  • Page 21 Authorized Distribution Brand： Website： Welcome to visit www.ameya360.com Contact Us： Address： 401 Building No.5, JiuGe Business Center, Lane 2301, Yishan Rd Minhang District, Shanghai , China Sales： Direct +86 (21) 6401-6692 Email amall@ameya360.com 800077892 Skype ameyasales1 ameyasales2 Customer Service： Email service@ameya360.com Partnership：...

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