用户手册 — Texas Instruments BQ27505EVM - BQ27505 System-Side, Single-Cell Impedance Track??? Technology Evaluation Module BQ27505E

目录

• 1  INTRODUCTION

  1
  • 1.1 FEATURES

    1
  • 1.2  APPLICATIONS

    1
  • 1.3  DESCRIPTION

    1
• Table of Contents

  2
• 2 DEVICE INFORMATION

  3
  • 2.1 AVAILABLE OPTIONS

    3
  • 2.2  DISSIPATION RATINGS

    3
  • 2.3 PIN ASSIGNMENT

    4
• 3 ELECTRICAL SPECIFICATIONS

  5
  • 3.1 ABSOLUTE MAXIMUM RATINGS

    5
  • 3.2  RECOMMENDED OPERATING CONDITIONS

    5
  • 3.3  POWER-ON RESET

    6
  • 3.4  INTERNAL TEMPERATURE SENSOR CHARACTERISTICS

    6
  • 3.5  HIGH-FREQUENCY OSCILLATOR

    6
  • 3.6  LOW-FREQUENCY OSCILLATOR

    6
  • 3.7  INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS

    6
  • 3.8  ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS

    7
  • 3.9  DATA FLASH MEMORY CHARACTERISTICS

    7
  • 3.10  I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS

    8
• 4 GENERAL DESCRIPTION

  9
  • 4.1 DATA COMMANDS

    10
    • 4.1.1 STANDARD DATA COMMANDS

      10
      • 4.1.1.1  Control( ): 0x00/0x01

        11
      • 4.1.1.2  AtRate( ): 0x02/0x03

        14
      • 4.1.1.3  AtRateTimeToEmpty( ): 0x04/0x05

        14
      • 4.1.1.4  Temperature( ): 0x06/0x07

        14
      • 4.1.1.5  Voltage( ): 0x08/0x09

        14
      • 4.1.1.6  Flags( ): 0x0a/0x0b

        15
      • 4.1.1.7  NominalAvailableCapacity( ): 0x0c/0x0d

        15
      • 4.1.1.8  FullAvailableCapacity( ): 0x0e/0x0f

        15
      • 4.1.1.9  RemainingCapacity( ): 0x10/0x11

        15
      • 4.1.1.10  FullChargeCapacity( ): 0x12/13

        15
      • 4.1.1.11  AverageCurrent( ): 0x14/0x15

        15
      • 4.1.1.12  TimeToEmpty( ): 0x16/0x17

        15
      • 4.1.1.13  TimeToFull( ): 0x18/0x19

        15
      • 4.1.1.14  StandbyCurrent( ): 0x1a/0x1b

        16
      • 4.1.1.15  StandbyTimeToEmpty( ): 0x1c/0x1d

        16
      • 4.1.1.16  MaxLoadCurrent( ): 0x1e/0x1f

        16
      • 4.1.1.17  MaxLoadTimeToEmpty( ): 0x20/0x21

        16
      • 4.1.1.18  AvailableEnergy( ): 0x22/0x23

        16
      • 4.1.1.19  AveragePower( ): 0x24/0x25

        16
      • 4.1.1.20  TimeToEmptyAtConstantPower( ): 0x26/0x27

        16
      • 4.1.1.21 StateofHealth( ): 0x28/0x29

        17
      • 4.1.1.22  StateOfCharge( ): 0x2c/0x2d

        17
      • 4.1.1.23 NormalizedImpedanceCal( ): 0x2e/0x2f

        17
      • 4.1.1.24 InstaneousCurrent Reading( ) 0x30/0x31

        17
    • 4.1.2 EXTENDED DATA COMMANDS

      17
      • 4.1.2.1  DesignCapacity( ): 0x3c/0x3d

        18
      • 4.1.2.2  DataFlashClass( ): 0x3e

        18
      • 4.1.2.3  DataFlashBlock( ): 0x3f

        18
      • 4.1.2.4  BlockData( ): 0x40…0x5f

        18
      • 4.1.2.5  BlockDataChecksum( ): 0x60

        18
      • 4.1.2.6  BlockDataControl( ): 0x61

        18
      • 4.1.2.7  DeviceNameLength( ): 0x62

        19
      • 4.1.2.8  DeviceName( ): 0x63…0x69

        19
      • 4.1.2.9  ApplicationStatus( ): 0x6a

        19
      • 4.1.2.10 Reserved — 0x6b–0x7f

        19
  • 4.2 DATA FLASH INTERFACE

    19
    • 4.2.1 ACCESSING THE DATA FLASH

      19
  • 4.3 MANUFACTURER INFORMATION BLOCKS

    20
  • 4.4 ACCESS MODES

    21
  • 4.5 SEALING/UNSEALING DATA FLASH

    21
  • 4.6 DATA FLASH SUMMARY

    21
• 5 FUNCTIONAL DESCRIPTION

  23
  • 5.1 FUEL GAUGING

    23
  • 5.2 IMPEDANCE TRACK™ VARIABLES

    24
    • 5.2.1 Load Mode

      24
    • 5.2.2 Load Select

      24
    • 5.2.3 Reserve Cap-mAh

      25
    • 5.2.4 Reserve Cap-mWh

      25
    • 5.2.5 Dsg Current Threshold

      25
    • 5.2.6 Chg Current Threshold

      25
    • 5.2.7 Quit Current, DSG Relax Time, CHG Relax Time, and Quit Relax Time

      25
    • 5.2.8 Qmax 0 and Qmax 1

      26
    • 5.2.9 Update Status 0 and Update Status 1

      26
    • 5.2.10 Avg I Last Run

      26
    • 5.2.11 Avg P Last Run

      26
    • 5.2.12 Delta Voltage

      26
    • 5.2.13 Default Ra and Ra Tables

      26
  • 5.3 DETAILED PIN DESCRIPTION

    26
    • 5.3.1 The Operation Configuration Register

      26
    • 5.3.2 Pin Function Code Descriptions

      27
    • 5.3.3 BAT_LOW Pin

      27
    • 5.3.4 Power Path Control With the BAT_GD Pin

      28
    • 5.3.5 Battery Detection Using the BI/TOUT Pin

      29
    • 5.3.6  SOC_INT pin

      29
  • 5.4 TEMPERATURE MEASUREMENT

    30
  • 5.5 OVERTEMPERATURE INDICATION

    30
    • 5.5.1 Overtemperature: Charge

      30
    • 5.5.2 Overtemperature: Discharge

      30
  • 5.6 CHARGING AND CHARGE-TERMINATION INDICATION

    30
    • 5.6.1 Detecting Charge Termination

      30
    • 5.6.2 Charge Inhibit

      30
  • 5.7 POWER MODES

    31
    • 5.7.1 BAT INSERT CHECK Mode

      31
    • 5.7.2 NORMAL MODE

      31
    • 5.7.3 SLEEP MODE

      31
    • 5.7.4 SLEEP+ MODE

      32
    • 5.7.5 HIBERNATE MODE

      32
  • 5.8 POWER CONTROL

    32
    • 5.8.1 WAKE-UP COMPARATOR

      32
    • 5.8.2 FLASH UPDATES

      33
  • 5.9 AUTOCALIBRATION

    33
• 6 APPLICATION-SPECIFIC INFORMATION

  33
  • 6.1 BATTERY PROFILE STORAGE AND SELECTION

    33
    • 6.1.1 Common Profile Aspects

      33
    • 6.1.2 Activities Upon Pack Insertion

      34
      • 6.1.2.1 First OCV and Impedance Measurement

        34
    • 6.1.3  Reading Application Status

      34
  • 6.2 APPLICATION-SPECIFIC FLOW AND CONTROL

    34
• 7 COMMUNICATIONSCOMMUNICATIONS Section

  35
  • 7.1 I2C INTERFACE

    35
  • 7.2 I2C Time Out

    36
  • 7.3 I2C Command Waiting time

    36
  • 7.4 PACKAGE INFORMATION

    36
    • 7.4.1 Package Dimensions

      36
• 8 REFERENCE SCHEMATICS

  37
  • 8.1 SCHEMATIC

    37