SLUS987B January 2011  – December 2015

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (Continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics: General Purpose I/O
    6. 7.6 Supply Current
    7. 7.7 REG27 LDO
    8. 7.8 Coulomb Counter
    9. 7.9 ADC
    10. 7.10External Capacitor Voltage Balance Drive
    11. 7.11Capacitor Voltage Monitor
    12. 7.12Internal Temperature Sensor
    13. 7.13Thermistor Measurement Support
    14. 7.14Internal Thermal Shutdown
    15. 7.15High-Frequency Oscillator
    16. 7.16Low-Frequency Oscillator
    17. 7.17RAM Backup
    18. 7.18Flash
    19. 7.19Current Protection Thresholds
    20. 7.20Current Protection Timing
    21. 7.21Timing Requirements: SMBus
    22. 7.22Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
      1. 8.1.1Super Capacitor Measurements
        1. 8.1.1.1Voltage
        2. 8.1.1.2Current, Charge and Discharge Counting
        3. 8.1.1.3Device Calibration
        4. 8.1.1.4Temperature
        5. 8.1.1.5Series Capacitor Configuration
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Capacitance Monitoring and Learning
        1. 8.3.1.1Monitoring and Control Operational Overview
        2. 8.3.1.2Main Monitoring Registers
        3. 8.3.1.3Initial Capacitance at Device Reset
        4. 8.3.1.4Qualified Capacitance Learning
        5. 8.3.1.5Health Determination
        6. 8.3.1.6ESR Measurement
        7. 8.3.1.7Monitor Operating Modes
      2. 8.3.2Capacitor Voltage Balancing
      3. 8.3.3Charge Control
        1. 8.3.3.1Charge Termination
        2. 8.3.3.2CHG Over Ride Control
      4. 8.3.4Lifetime Data Gathering
        1. 8.3.4.1Lifetime Maximum Temperature
        2. 8.3.4.2Lifetime Minimum Temperature
        3. 8.3.4.3Lifetime Maximum Capacitor Voltage
      5. 8.3.5Safety Detection Features
        1. 8.3.5.1 Capacitor Overvoltage (OV)
        2. 8.3.5.2 Capacitor Voltage Imbalance (CIM)
        3. 8.3.5.3 Weak Capacitor (CLBAD)
        4. 8.3.5.4 Overtemperature (OT)
        5. 8.3.5.5 Overcurrent During Charging (OC Chg)
        6. 8.3.5.6 Overcurrent During Discharging (OC Dsg)
        7. 8.3.5.7 Short-Circuit During Charging (SC Chg)
        8. 8.3.5.8 Short-Circuit During Discharging (SC Dsg)
        9. 8.3.5.9 AFE Watchdog (WDF)
        10. 8.3.5.10Integrated AFE Communication Fault (AFE_C)
        11. 8.3.5.11Data Flash Fault (DFF)
        12. 8.3.5.12FAULT Indication (FAULT Pin)
      6. 8.3.6Communications
        1. 8.3.6.1SMBus On and Off State
      7. 8.3.7Security (Enables and Disables Features)
      8. 8.3.8Measurement System Calibration
        1. 8.3.8.1 Coulomb Counter Deadband
        2. 8.3.8.2 Auto Calibration
        3. 8.3.8.3 Current Gain
        4. 8.3.8.4 CC Delta
        5. 8.3.8.5 Cap1 K-factor
        6. 8.3.8.6 Cap2 K-factor
        7. 8.3.8.7 Cap3 K-factor
        8. 8.3.8.8 Cap4 K-factor
        9. 8.3.8.9 Cap5 K-factor
        10. 8.3.8.10K-factor Override Flag
        11. 8.3.8.11System Voltage K-factor
        12. 8.3.8.12Stack Voltage K-factor
        13. 8.3.8.13K-factor Stack Override Flag
        14. 8.3.8.14CC Offset
        15. 8.3.8.15Board Offset
        16. 8.3.8.16Int Temp Offset
        17. 8.3.8.17Ext1 Temp Offset
        18. 8.3.8.18CC Current
        19. 8.3.8.19Voltage Signal
        20. 8.3.8.20Temp Signal
        21. 8.3.8.21CC Offset Time
        22. 8.3.8.22ADC Offset Time
        23. 8.3.8.23Current Gain Time
        24. 8.3.8.24Voltage Time
        25. 8.3.8.25Temperature Time
        26. 8.3.8.26Cal Mode Timeout
        27. 8.3.8.27Ext Coef a1..a5, b1..b4, Ext rc0, Ext adc0
        28. 8.3.8.28Rpad
        29. 8.3.8.29Rint
        30. 8.3.8.30Int Coef 1..4, Int Min AD, Int Max Temp
        31. 8.3.8.31Filter
        32. 8.3.8.32Deadband
        33. 8.3.8.33CC Deadband
    4. 8.4Device Functional Modes
      1. 8.4.1Operating Power Modes
    5. 8.5Programming
      1. 8.5.1Communications
        1. 8.5.1.1bq33100 Slave Address
        2. 8.5.1.2SMBus On and Off State
        3. 8.5.1.3Packet Error Checking
      2. 8.5.2SBS Commands
        1. 8.5.2.1SBS Command Summary
        2. 8.5.2.2SBS Command Details
          1. 8.5.2.2.1 ManufacturerAccess (0x00)
            1. 8.5.2.2.1.1 Device Type (0x0001)
            2. 8.5.2.2.1.2 Firmware Version (0x0002)
            3. 8.5.2.2.1.3 Hardware Version (0x0003)
            4. 8.5.2.2.1.4  DF Checksum (0x0004)
            5. 8.5.2.2.1.5  Seal Device (0x0020)
            6. 8.5.2.2.1.6 Lifetime and Capacitor Balancing Enable (0x0021)
            7. 8.5.2.2.1.7  FAULT Activation (0x0030)
            8. 8.5.2.2.1.8  FAULT Clear (0x0031)
            9. 8.5.2.2.1.9  CHGLVL0 Activation (0x0032)
            10. 8.5.2.2.1.10 CHGLVL0 Clear (0x0033)
            11. 8.5.2.2.1.11 CHGLVL1 Activation (0x0033)
            12. 8.5.2.2.1.12 CHGLVL1 Clear (0x0034)
            13. 8.5.2.2.1.13 Learn Load Activation (0x0037)
            14. 8.5.2.2.1.14 Learn Load Clear (0x0038)
            15. 8.5.2.2.1.15Calibration Mode (0x0040)
            16. 8.5.2.2.1.16Reset (0x0041)
            17. 8.5.2.2.1.17Unseal Device (UnsealKey)
            18. 8.5.2.2.1.18Extended SBS Commands
          2. 8.5.2.2.2 Temperature (0x08)
          3. 8.5.2.2.3 Voltage (0x09)
          4. 8.5.2.2.4 Current (0x0a)
          5. 8.5.2.2.5 ESR (0x0b)
          6. 8.5.2.2.6 RelativeStateofCharge (0x0d)
          7. 8.5.2.2.7 Health (0x0e)
          8. 8.5.2.2.8 Capacitance (0x10)
          9. 8.5.2.2.9 ChargingCurrent (0x14)
          10. 8.5.2.2.10ChargingVoltage (0x15)
          11. 8.5.2.2.11CapacitorVoltage5..1 (0x3b..0x3f)
          12. 8.5.2.2.12Extended SBS Commands
            1. 8.5.2.2.12.1FETControl(0x46)
            2. 8.5.2.2.12.2SafetyAlert (0x50)
            3. 8.5.2.2.12.3SafetyStatus (0x51)
            4. 8.5.2.2.12.4OperationStatus (0x54)
            5. 8.5.2.2.12.5SystemVoltage (0x5a)
            6. 8.5.2.2.12.6UnSealKey(0x60)
            7. 8.5.2.2.12.7ManufacturerInfo(0x70)
      3. 8.5.3Data Flash
        1. 8.5.3.1Accessing Data Flash
        2. 8.5.3.2Data Flash Interface
        3. 8.5.3.3Data Flash Summary
        4. 8.5.3.4Specific Data Flash Programming Details
          1. 8.5.3.4.1 OC Dsg
          2. 8.5.3.4.2 OC Dsg Time
          3. 8.5.3.4.3 SC Dsg Cfg
          4. 8.5.3.4.4 SC Chg Cfg
          5. 8.5.3.4.5 Initial Full Charge Capacitance
          6. 8.5.3.4.6 Full Charge Capacitance
          7. 8.5.3.4.7  Firmware Version
          8. 8.5.3.4.8  Hardware Revision
          9. 8.5.3.4.9  Manuf. Info
          10. 8.5.3.4.10Operation Cfg
          11. 8.5.3.4.11FET ACTION
          12. 8.5.3.4.12FAULT
          13. 8.5.3.4.13AFE State_CTL
          14. 8.5.3.4.14Measurement Margin %
          15. 8.5.3.4.15Timer
          16. 8.5.3.4.16V Chg Nominal
          17. 8.5.3.4.17V Chg A
          18. 8.5.3.4.18 V Chg B
          19. 8.5.3.4.19V Chg Max
          20. 8.5.3.4.20Min Voltage
          21. 8.5.3.4.21Learning Frequency
          22. 8.5.3.4.22Dsg Current Threshold
          23. 8.5.3.4.23Chg Current Threshold
          24. 8.5.3.4.24Quit Current
  9. Application and Implementation
    1. 9.1Application Information
    2. 9.2Typical Application
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. 9.2.2.1Selecting Number of Series Capacitor Support
        2. 9.2.2.2Selecting Charging Voltage Values
        3. 9.2.2.3Learning Frequency Selection
      3. 9.2.3Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Documentation Support
      1. 12.1.1Related Documentation
    2. 12.2Community Resources
    3. 12.3Trademarks
    4. 12.4Electrostatic Discharge Caution
    5. 12.5Glossary
  13. 13Mechanical, Packaging, and Orderable Information

1 Features

  • Fully Integrated 2, 3, 4 and 5-Series Super Capacitor Manager
  • Can Be Used With Up to 9 Series Capacitors Without Individual Integrated Capacitor Monitoring and Balancing
  • Active Capacitor Voltage Balancing
    • Prevents Super Capacitor Overvoltage During Charging
  • Capacitor Health Monitoring
    • Capacitance Learning
    • ESR Measurement
    • Operation Status
    • State of Charge
    • State-of-Health
    • Charging Voltage and Current Reports
    • Safety Alerts With Optional Pin Indication
  • Integrated Protection Monitoring and Control
    • Overvoltage
    • Short Circuit
    • Excessive Temperature
    • Excessive Capacitor Leakage
  • 2-Wire SMBus Serial Communications
  • High-Accuracy 16-Bit Delta-Sigma ADC With a 16-Channel Multiplexer for Measurement
    • Used for Voltage, Current and Temperature
  • Low Power Consumption
    • < 660 µA in Normal Operating Mode
    • <1 µA in Shutdown Mode
  • Wide Operating Temperature: –40°C to +85°C

2 Applications

  • Battery Backup Replacements
  • Cache Controllers
  • RAID Systems
  • Server Blade Cards
  • UPS
  • Medical and Test Equipment
  • Portable Instruments

3 Description

The Texas Instruments bq33100 Super Capacitor Manager is a fully integrated, single-chip, solution that provides a rich array of features for charge control, monitoring, and protection, for either 2, 3, 4, or 5 series Super Capacitors with individual capacitor monitoring and balancing or up to 9 series capacitors with only the stack voltage being measured. With a small footprint of 7.8 × 6.4 mm in a compact 24-pin TSSOP package, the bq33100 maximizes functionality and safety while dramatically increasing ease of use and cutting the solution cost and size for Super Capacitor applications.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
bq33100TSSOP (24)7.80 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

bq33100 System Diagram

bq33100 system_diagram_SLUS987.gif