Texas Instruments bq25970 User Manual
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Texas Instruments bq25970 User Manual

Pwr893 evaluation module
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bq25970 PWR893 Evaluation Module
User's Guide
Literature Number: SLUUBR4A
February 2018 – Revised December 2018

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Summary of Contents for Texas Instruments bq25970

  • Page 1 PWR893 Evaluation Module User's Guide Literature Number: SLUUBR4A February 2018 – Revised December 2018...

  • Page 2: Evm Features

    This EVM does not include the EV2300 or EV2400 (EV2x00) interface board. To evaluate the EVM, a EV2x00 interface board must be ordered separately. There are two bq25970 on the EVM, users can configure the EVM either as a single bq25970 or a parallel bq25970 operation based on the jumper setting described in next section.
  • Page 3 Max current from VBUS to VOUT VOUT Operating free-air temperature range –40 °C Over operating free-air temperature range (unless otherwise noted) SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 4: Test Summary

    Download bqstudio from http://www.ti.com/tool/bqstudio. Follow the installation steps to install the tool. The software supports the Microsoft Windows XP and Windows 7 operating systems. ® ® bq25970 PWR893 Evaluation Module SLUUBR4A – February 2018 – Revised December 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 5: Equipment Setup

    3. Turn on the battery simulator, set to constant voltage mode and output to 3.6 V. Turn off (disable) the load. Connect load to J2 (VOUT and GND) as shown in Figure Figure 1. Test Setup for BQ25970 4. Connect the EV2x00 USB interface board to the computer with a USB cable and from I C port to J3 with the 4-pin cable.

  • Page 6: Test Procedure

    Test Summary www.ti.com 5. Turn on the computer. Launch Battery Management Studio (bqStudio). Select Charger and bq25970 evaluation software. The main window of the software is shown in Figure Figure 3. Select “Charger” in bqStudio Window Test Procedure The steps for the test procedure follow: 1.

  • Page 7: Communication Verification

    Normal Figure 4. Sample of Register Map 5. Click the Read button. Observe → Everything normal at Fault box SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 8: Board Layout, Schematic, And Bill Of Materials

    Board Layout Figure 5 through Figure 10 illustrate the board layouts for this EVM. Figure 5. BQ25970EVM-893 top layer bq25970 PWR893 Evaluation Module SLUUBR4A – February 2018 – Revised December 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 9 Board Layout, Schematic, and Bill of Materials www.ti.com Figure 6. BQ25970EVM-893 Mid Layer 1 Figure 7. BQ25970EVM-893 Mid-Layer 2 SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 10 Board Layout, Schematic, and Bill of Materials www.ti.com Figure 8. BQ25970EVM-893 Mid-Layer 3 Figure 9. BQ25970EVM-893 Mid-Layer 4 bq25970 PWR893 Evaluation Module SLUUBR4A – February 2018 – Revised December 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 11 Board Layout, Schematic, and Bill of Materials www.ti.com Figure 10. BQ25970EVM-893 Bottom Layer Figure 11. bq25970EVM-893 Top Layer Assembly SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 12 3.1.1 PCB Layout Guideline The bq25970 supports up to a 8-A charge current. It is critical to maximize the BUS and VOUT Cu trace. TI recommends following the PCB layout guidelines: 1. VBUS traces should be as short and wide as possible to accommodate for high current.
  • Page 13 Board Layout, Schematic, and Bill of Materials www.ti.com Schematic Figure 13 Figure 14 illustrate the schematic for this EVM. Figure 13. bq25970EVM-893 Schematic (page 1) SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 14 Board Layout, Schematic, and Bill of Materials www.ti.com Figure 14. bq25970EVM-893 Schematic (page 2) bq25970 PWR893 Evaluation Module SLUUBR4A – February 2018 – Revised December 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 15 SH-JP7, SH-JP8, SH-JP11, SH-JP12, SH- JP16, SH-JP17, SH-JP18, SH-JP19, SH- JP20, SH-JP21 Unless otherwise noted, all parts may be substituted with equivalents. SLUUBR4A – February 2018 – Revised December 2018 bq25970 PWR893 Evaluation Module Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 16 Bourns SH-JP6, SH-JP9, SH-JP10, SH-JP13, SH- Shunt, 100mil, Gold plated, Black 969102-0000-DA or SNT-100-BK-G 3M or Samtec JP14, SH-JP15 bq25970 PWR893 Evaluation Module SLUUBR4A – February 2018 – Revised December 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...

  • Page 17: Revision History

    NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (February 2018) to A Revision ....................Page ....................... • Changed the Schematic images SLUUBR4A – February 2018 – Revised December 2018 Revision History Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated...
  • Page 18 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • 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 3.4 European Union 3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive): This is a class A product intended for use in environments other than domestic environments that are connected to a low-voltage power-supply network that supplies buildings used for domestic purposes.
  • 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 © 2018, Texas Instruments Incorporated...
  • Page 22 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2018, Texas Instruments Incorporated...

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