Texas Instruments bq2980 User Manual
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Texas Instruments bq2980 User Manual

Texas Instruments bq2980 User Manual

Low power protector with integrated high-side driver for fast charging single cell evaluation module
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bq2980 Low Power Protector With Integrated High-Side
Driver For Fast Charging Single Cell Evaluation Module
This engineering evaluation module (EVM) is a complete evaluation system for the bq2980 voltage,
current, temperature protector with integrated high-side NFET drivers with external FETs shutdown control
for single lithium-ion and lithium polymer cell. The EVM includes one bq2980 and dual FETs to control
current in a configuration typical for switching currents to turn ON or OFF the charging and discharging
power path for battery cell protection. The EVM module includes one bq2980 integrated circuit (IC), a 1-
mΩ sense resistor, EFC8811R FETs, and all other onboard components necessary to switch charge and
discharge current. The evaluation module connects between a "battery" source and a "pack" load or
charger. In addition to the voltage and current protection,bq2980 also supports overtemperature protection
that can be tested on this EVM.
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Trademarks
All trademarks are the property of their respective owners.
SLVUB38 - May 2017
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bq2980 Low Power Protector With Integrated High-Side Driver For Fast
Copyright © 2017, Texas Instruments Incorporated
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Charging Single Cell Evaluation Module
User's Guide
SLVUB38 - May 2017
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Summary of Contents for Texas Instruments bq2980

  • Page 1: Table Of Contents

    NFET drivers with external FETs shutdown control for single lithium-ion and lithium polymer cell. The EVM includes one bq2980 and dual FETs to control current in a configuration typical for switching currents to turn ON or OFF the charging and discharging power path for battery cell protection.

  • Page 2: Features

    NOTE: The PWR883 board is constructed and rated to withstand an absolute maximum of 10 A. Using a 1-mΩ sense resistor and OCC and OCD threshold of +8 mV (the bq2980 is pre- programmed from the factory), OCC, OCD testing can be performed at 8 A. If performing SCD testing (SCD threshold set to 20 mV), the sense resistor must be scaled up and the necessary wattage resistor must be installed.

  • Page 3: Bq2980Evm Quick Start Guide

    Quick Start Guide www.ti.com bq2980EVM Quick Start Guide This section provides the step-by-step procedures required to use a new bq2980 EVM and configure it for operation in a engineering laboratory environment. Before You Begin The following warnings and cautions are noted for the safety of anyone using or working close to the bq2980 EVM.

  • Page 4: List Of Figures 1 Bq2980Evm-Pwr883 Connection For Basic Operations

    DMM leads or scope probes connected on the CHG or DSG (CHG/DSG) line, increases the charge pump loading of the bq2980 at the expense of the device current consumption on VDD. Device power consumption returns to normal when the scope probes and leads are disconnected from the CHG/DSG line.

  • Page 5: Bq2980Evm-Pwr883 Demonstration Of Undervoltage

    5. Set power supply #2 to 4.0 V with the ability sink or source 100 mA–200 mA, enable the supply and disable supply. Observe bq2980 to transition from SHUTDOWN to NORMAL mode. The bq2980 device can also enter NORMAL mode, if the VDD pin is SHORTED to the PACK pin. Also note in NORMAL mode, both drivers (charge and discharge FETs are ON) are to be operating at greater than 9.5 V, as detailed in...

  • Page 6: Bq2980Evm-Pwr883 Demonstration Of Overvoltage

    #1 voltage(VBAT) < (Vovp – Vovp_hys), or when the power supply #1 voltage - (VBAT) < (Vovp) and the load resistor is in place and being detected. 4. For load detection, the bq2980 needs the condition of (VBAT – VPACK) > 400 mV. 5. If complete, power down BAT+ and PACK+, disconnect setup, if complete.

  • Page 7: Bq2980Evm-Pwr883 Demonstration Fet Override With Control Pin (Ctr)

    2. Set power supply #2 to 4.0 V with the ability sink or source 100 mA–200 mA, enable the supply and disable supply. Observe that the bq2980 transitions from SHUTDOWN to NORMAL mode. 3. Connect CTR to LOW ( < 400 mV) for NORMAL operation.

  • Page 8: Additional Evaluation Setups

    ABS maximum of VDD specification of the bq2980. Figure 5. bq2980EVM-PWR883 Demonstration of Overcurrent Discharge Fault at 8 A bq2980 Low Power Protector With Integrated High-Side Driver For Fast SLVUB38 – May 2017 Charging Single Cell Evaluation Module Submit Documentation Feedback Copyright ©...

  • Page 9: Troubleshooting

    NORMAL mode currents being violated as described in the bq2980 data sheet (SLUSCS3). • If the bq2980 does not appear to be operating after applying the wake pulse signal on the PACK+ pin, check the VDD voltage at the battery connection and PACK+ connectors.

  • Page 10: Circuit Module Physical Layouts

    Circuit Module Physical Layouts www.ti.com Circuit Module Physical Layouts This section contains the schematics, the printed-circuit board (PCB) layout, and assembly drawings for the bq2980 circuit module. Schematic Figure 6 shows the bq2980EVM schematic. Figure 6. bq2980EVM Schematic bq2980 Low Power Protector With Integrated High-Side Driver For Fast SLVUB38 –...

  • Page 11: Board Layout

    Circuit Module Physical Layouts www.ti.com Board Layout This section shows the PCB layers and assembly drawing for the bq2980 module (see Figure 7 through Figure 10). The board is a 2-layer, 2-oz copper clad, single-sided assembly board. There are no components placed on the bottom of the EVM.

  • Page 12: Top Layer

    Circuit Module Physical Layouts www.ti.com Figure 9. Top Layer bq2980 Low Power Protector With Integrated High-Side Driver For Fast SLVUB38 – May 2017 Charging Single Cell Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated...

  • Page 13: Bottom Layer

    Circuit Module Physical Layouts www.ti.com Figure 10. Bottom Layer SLVUB38 – May 2017 bq2980 Low Power Protector With Integrated High-Side Driver For Fast Charging Single Cell Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated...

  • Page 14: Bill Of Materials

    R1, R2 5.1Meg RES, 5.1 M, 5%, 0.063 W, 0402 0402 CRCW04025M10JNED Vishay-Dale bq2980 Low Power Protector With Integrated High-Side Driver For Fast SLVUB38 – May 2017 Charging Single Cell Evaluation Module Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated...

  • Page 15: Related Documentation From Texas Instruments

    Current, Temperature Protector with Integrated High Side NFET Driver for Fast/Flash Charging Single-Cell Li-ion and Li-Polymer Batteries (SLUSCS3) SLVUB38 – May 2017 bq2980 Low Power Protector With Integrated High-Side Driver For Fast Charging Single Cell Evaluation Module Submit Documentation Feedback...
  • Page 16 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 17 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 18 【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 19 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 © 2017, Texas Instruments Incorporated...
  • Page 20 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...
  • Page 21 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ2980EVM-883...

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