Texas Instruments TPS92691EVM-752 User Manual
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Texas Instruments TPS92691EVM-752 User Manual

Texas Instruments TPS92691EVM-752 User Manual

Boost and boost-to-battery led driver evaluation board
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TPS92691 Boost and Boost-to-Battery LED Driver
This user's guide describes the characteristics, operation, and use of the TPS92691 boost and boost-to-
battery evaluation module (EVM). A complete schematic diagram, printed-circuit board layouts, and bill of
materials are included in this document.
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All trademarks are the property of their respective owners.
SLVUAO7 - March 2016
Submit Documentation Feedback
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(Boost, VIN = 14 V, Number of LEDs in Series = 18, Up to 25 W)
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TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board
Copyright © 2016, Texas Instruments Incorporated
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User's Guide
SLVUAO7 - March 2016
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Summary of Contents for Texas Instruments TPS92691EVM-752

  • Page 1: Table Of Contents

    ........... Typical Waveforms (Boost Configuration, VIN = 14 V, 18 LEDs) ................................Optimizing EVM Performance Based on LED String Voltage and Current ............. TPS92691EVM-752 Assembly Drawing and PCB layout ......................Bill of Materials List of Figures ......................Connection Diagram ...................
  • Page 2 Bottom Layer and Bottom Overlay (Bottom View) List of Tables ............TPS92691EVM-752 Electrical Performance Specifications ......................Bill of Materials TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board SLVUAO7 – March 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 3: Introduction

    Flyback, based on the output LED stack voltage. Description The TPS92691EVM-752 is a fully assembled and tested boost and boost-to-battery LED driver designed to power a single string of series-connected LEDs. Accurate closed-loop LED current regulation is achieved using a low-offset current sense amplifier that is compatible with either high- or low-side current- sensing implementations.

  • Page 4: Connector Description

    Configuring for Boost or Boost-to-Battery (J1, J3) The TPS92691EVM-752 can be configured as a boost regulator or a boost-to-battery regulator simply by connecting the LED load to either connector J1 or to connector J3 as described in this section. Do not attempt to use J1 and J3 simultaneously.

  • Page 5: J4, Iadj Drive Select

    3 V and 5 V. The dimming frequency range is 100 Hz to 1 kHz. SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 6: Electrical Performance Specifications

    Electrical Performance Specifications www.ti.com Electrical Performance Specifications Table 1. TPS92691EVM-752 Electrical Performance Specifications Parameter Test Conditions Unit Input Characteristics Input voltage range Input UVLO setting Maximum switch node voltage Output Characteristics Output voltage, VOUT LED+ to LED– (Boost) LED+ to VIN (Boost-to-Battery) Output current 62.5...

  • Page 7: Schematic

    Schematic www.ti.com Schematic Figure 2 illustrates the EVM schematic. Figure 2. TPS92691EVM-752 Schematic SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 8: Performance Data And Typical Characteristic Curves

    13 LEDs 18 LEDs 350.2 349.8 349.6 349.4 Input Voltage (V) D001 Figure 4. Output LED Current vs Input Voltage TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board SLVUAO7 – March 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 9: Temperature Characteristics

    J4. To ensure proper operation and limit temperature rise, the maximum output power should be limited to 25 W for any given LED stack voltage and LED current combination. SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 10: Pwm Dimming

    PWM test point, TP8. The PWM pin can be pulled to ground to disable switching under fault conditions. TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board SLVUAO7 – March 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 11: Typical Waveforms (Boost Configuration, Vin = 14 V, 18 Leds)

    SS pin voltage; Time: 400 ms/div spaCh4: LED current; Time: 1 µs/div Figure 10. Overvoltage Protection Figure 9. Nominal Operation SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 12: Pwm Dimming (Duty Cycle = 4 %, Frequency = 240 Hz)

    Figure 13. PWM Dimming (Duty cycle = 96 %, Frequency = 123456781Ch2: Input voltage; Ch3: LED current; Time: 200 ms/div 240 Hz) Figure 14. Start-Stop (Warm-Crank) Transient Response TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board SLVUAO7 – March 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 13: Emi

    Figure 15. Conducted EMI Based on CISPR 25 Class 3 Limits Boost, 32 V Output, R6 = 47 Ω SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...

  • Page 14: Optimizing Evm Performance Based On Led String Voltage And Current

    Figure 17, and Figure 18 show the design and assembly of the TPS92691EVM-752 printed circuit board. The EVM dimensions are x = 3.05 in and y = 2.7 in. Figure 16. Assembly Drawing TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board SLVUAO7 –...

  • Page 15: Top Layer And Top Overlay (Top View)

    TPS92691EVM-752 Assembly Drawing and PCB layout www.ti.com Figure 17. Top Layer and Top Overlay (Top View) Figure 18. Bottom Layer and Bottom Overlay (Bottom View) SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback...

  • Page 16: Bill Of Materials

    Bill of Materials www.ti.com Bill of Materials Table 2 lists the TPS92691EVM-752 components list according to the schematic shown in Figure Table 2. Bill of Materials Designator Value Description Package PartNumber Manufacturer Multi-Topology LED Driver with Rail-to-Rail Current PWP0016J TPS92691QPWPRQ1...
  • Page 17 RES, 1.43 k, 1%, 0.1 W 0603 CRCW06031K43FKEA Vishay-Dale 11.8k RES, 11.8 k, 1%, 0.1 W 0603 CRCW060311K8FKEA Vishay-Dale SLVUAO7 – March 2016 TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
  • Page 18 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
  • Page 19 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 20 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER 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.
  • Page 21 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 © 2015, Texas Instruments Incorporated...

  • Page 22: Important Notice

    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.
  • Page 23 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS92691EVM-752...

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