Manuali utente per Texas Instruments BQ27505EVM - BQ27505 System-Side, Single-Cell Impedance Track??? Technology Evaluation Module BQ27505E

Sommario

• 1  INTRODUCTION

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  • 1.1 FEATURES

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  • 1.2  APPLICATIONS

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  • 1.3  DESCRIPTION

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• Table of Contents

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• 2 DEVICE INFORMATION

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  • 2.1 AVAILABLE OPTIONS

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  • 2.2  DISSIPATION RATINGS

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  • 2.3 PIN ASSIGNMENT

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• 3 ELECTRICAL SPECIFICATIONS

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  • 3.1 ABSOLUTE MAXIMUM RATINGS

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  • 3.2  RECOMMENDED OPERATING CONDITIONS

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  • 3.3  POWER-ON RESET

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  • 3.4  INTERNAL TEMPERATURE SENSOR CHARACTERISTICS

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  • 3.5  HIGH-FREQUENCY OSCILLATOR

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  • 3.6  LOW-FREQUENCY OSCILLATOR

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  • 3.7  INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS

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  • 3.8  ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS

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  • 3.9  DATA FLASH MEMORY CHARACTERISTICS

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  • 3.10  I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS

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• 4 GENERAL DESCRIPTION

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  • 4.1 DATA COMMANDS

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    • 4.1.1 STANDARD DATA COMMANDS

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      • 4.1.1.1  Control( ): 0x00/0x01

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      • 4.1.1.2  AtRate( ): 0x02/0x03

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      • 4.1.1.3  AtRateTimeToEmpty( ): 0x04/0x05

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      • 4.1.1.4  Temperature( ): 0x06/0x07

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      • 4.1.1.5  Voltage( ): 0x08/0x09

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      • 4.1.1.6  Flags( ): 0x0a/0x0b

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      • 4.1.1.7  NominalAvailableCapacity( ): 0x0c/0x0d

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      • 4.1.1.8  FullAvailableCapacity( ): 0x0e/0x0f

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      • 4.1.1.9  RemainingCapacity( ): 0x10/0x11

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      • 4.1.1.10  FullChargeCapacity( ): 0x12/13

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      • 4.1.1.11  AverageCurrent( ): 0x14/0x15

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      • 4.1.1.12  TimeToEmpty( ): 0x16/0x17

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      • 4.1.1.13  TimeToFull( ): 0x18/0x19

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      • 4.1.1.14  StandbyCurrent( ): 0x1a/0x1b

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      • 4.1.1.15  StandbyTimeToEmpty( ): 0x1c/0x1d

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      • 4.1.1.16  MaxLoadCurrent( ): 0x1e/0x1f

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      • 4.1.1.17  MaxLoadTimeToEmpty( ): 0x20/0x21

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      • 4.1.1.18  AvailableEnergy( ): 0x22/0x23

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      • 4.1.1.19  AveragePower( ): 0x24/0x25

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      • 4.1.1.20  TimeToEmptyAtConstantPower( ): 0x26/0x27

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      • 4.1.1.21 StateofHealth( ): 0x28/0x29

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      • 4.1.1.22  StateOfCharge( ): 0x2c/0x2d

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      • 4.1.1.23 NormalizedImpedanceCal( ): 0x2e/0x2f

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      • 4.1.1.24 InstaneousCurrent Reading( ) 0x30/0x31

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    • 4.1.2 EXTENDED DATA COMMANDS

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      • 4.1.2.1  DesignCapacity( ): 0x3c/0x3d

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      • 4.1.2.2  DataFlashClass( ): 0x3e

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      • 4.1.2.3  DataFlashBlock( ): 0x3f

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      • 4.1.2.4  BlockData( ): 0x40…0x5f

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      • 4.1.2.5  BlockDataChecksum( ): 0x60

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      • 4.1.2.6  BlockDataControl( ): 0x61

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      • 4.1.2.7  DeviceNameLength( ): 0x62

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      • 4.1.2.8  DeviceName( ): 0x63…0x69

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      • 4.1.2.9  ApplicationStatus( ): 0x6a

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      • 4.1.2.10 Reserved — 0x6b–0x7f

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  • 4.2 DATA FLASH INTERFACE

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    • 4.2.1 ACCESSING THE DATA FLASH

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  • 4.3 MANUFACTURER INFORMATION BLOCKS

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  • 4.4 ACCESS MODES

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  • 4.5 SEALING/UNSEALING DATA FLASH

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  • 4.6 DATA FLASH SUMMARY

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• 5 FUNCTIONAL DESCRIPTION

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  • 5.1 FUEL GAUGING

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  • 5.2 IMPEDANCE TRACK™ VARIABLES

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    • 5.2.1 Load Mode

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    • 5.2.2 Load Select

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    • 5.2.3 Reserve Cap-mAh

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    • 5.2.4 Reserve Cap-mWh

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    • 5.2.5 Dsg Current Threshold

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    • 5.2.6 Chg Current Threshold

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

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    • 5.2.8 Qmax 0 and Qmax 1

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    • 5.2.9 Update Status 0 and Update Status 1

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    • 5.2.10 Avg I Last Run

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    • 5.2.11 Avg P Last Run

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    • 5.2.12 Delta Voltage

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    • 5.2.13 Default Ra and Ra Tables

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  • 5.3 DETAILED PIN DESCRIPTION

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    • 5.3.1 The Operation Configuration Register

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    • 5.3.2 Pin Function Code Descriptions

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    • 5.3.3 BAT_LOW Pin

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    • 5.3.4 Power Path Control With the BAT_GD Pin

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    • 5.3.5 Battery Detection Using the BI/TOUT Pin

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    • 5.3.6  SOC_INT pin

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  • 5.4 TEMPERATURE MEASUREMENT

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  • 5.5 OVERTEMPERATURE INDICATION

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    • 5.5.1 Overtemperature: Charge

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    • 5.5.2 Overtemperature: Discharge

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  • 5.6 CHARGING AND CHARGE-TERMINATION INDICATION

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    • 5.6.1 Detecting Charge Termination

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    • 5.6.2 Charge Inhibit

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  • 5.7 POWER MODES

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    • 5.7.1 BAT INSERT CHECK Mode

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    • 5.7.2 NORMAL MODE

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    • 5.7.3 SLEEP MODE

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    • 5.7.4 SLEEP+ MODE

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    • 5.7.5 HIBERNATE MODE

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  • 5.8 POWER CONTROL

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    • 5.8.1 WAKE-UP COMPARATOR

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    • 5.8.2 FLASH UPDATES

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  • 5.9 AUTOCALIBRATION

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• 6 APPLICATION-SPECIFIC INFORMATION

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  • 6.1 BATTERY PROFILE STORAGE AND SELECTION

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    • 6.1.1 Common Profile Aspects

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    • 6.1.2 Activities Upon Pack Insertion

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      • 6.1.2.1 First OCV and Impedance Measurement

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    • 6.1.3  Reading Application Status

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  • 6.2 APPLICATION-SPECIFIC FLOW AND CONTROL

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• 7 COMMUNICATIONSCOMMUNICATIONS Section

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  • 7.1 I2C INTERFACE

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  • 7.2 I2C Time Out

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  • 7.3 I2C Command Waiting time

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  • 7.4 PACKAGE INFORMATION

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    • 7.4.1 Package Dimensions

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• 8 REFERENCE SCHEMATICS

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  • 8.1 SCHEMATIC

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