SLVS950I July   2009  – May 2018 TPS65070 , TPS65072 , TPS65073 , TPS650731 , TPS650732

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Block Diagram
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Options
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Electrical Characteristics
    6. 8.6  Electrical Characteristics - DCDC1 Converter
    7. 8.7  Electrical Characteristics - DCDC2 Converter
    8. 8.8  Electrical Characteristics - DCDC3 Converter
    9. 8.9  Electrical Characteristics - VLDO1 and VLDO2 Low Dropout Regulators
    10. 8.10 Electrical Characteristics - wLED Boost Converter
    11. 8.11 Electrical Characteristics - Reset, PB_IN, PB_OUT, PGood, Power_on, INT, EN_EXTLDO, EN_wLED
    12. 8.12 Electrical Characteristics - ADC Converter
    13. 8.13 Electrical Characteristics - Touch Screen Interface
    14. 8.14 Electrical Characteristics - Power Path
    15. 8.15 Electrical Characteristics - Battery Charger
    16. 8.16 Timing Requirements
    17. 8.17 Dissipation Ratings
    18. 8.18 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  Battery Charger and Power Path
      2. 10.3.2  Power Down
      3. 10.3.3  Power-On Reset
      4. 10.3.4  Power-Path Management
        1. 10.3.4.1 SYS Output
      5. 10.3.5  Battery Charging
        1. 10.3.5.1 I-PRECHARGE
        2. 10.3.5.2 ITERM
        3. 10.3.5.3 Battery Detection and Recharge
        4. 10.3.5.4 Charge Termination On/Off
        5. 10.3.5.5 Timers
        6. 10.3.5.6 Dynamic Timer Function
        7. 10.3.5.7 Timer Fault
      6. 10.3.6  Battery Pack Temperature Monitoring
      7. 10.3.7  Battery Charger State Diagram
      8. 10.3.8  DC-DC Converters and LDOs
        1. 10.3.8.1 Operation
        2. 10.3.8.2 DCDC1 Converter
        3. 10.3.8.3 DCDC2 Converter
        4. 10.3.8.4 DCDC3 Converter
      9. 10.3.9  Power Save Mode
        1. 10.3.9.1 Dynamic Voltage Positioning
        2. 10.3.9.2 100% Duty Cycle Low Dropout Operation
        3. 10.3.9.3 Undervoltage Lockout
      10. 10.3.10 Short-Circuit Protection
        1. 10.3.10.1 Soft Start
      11. 10.3.11 Enable
        1. 10.3.11.1 RESET (TPS65070, TPS65073, TPS650731, TPS650732 Only)
        2. 10.3.11.2 PGOOD (Reset Signal For Applications Processor)
        3. 10.3.11.3 PB_IN (Push-Button IN)
        4. 10.3.11.4 PB_OUT
        5. 10.3.11.5 POWER_ON
        6. 10.3.11.6 EN_wLED (TPS65072 Only)
        7. 10.3.11.7 EN_EXTLDO (TPS65072 Only)
      12. 10.3.12 Short-Circuit Protection
      13. 10.3.13 Thermal Shutdown
        1. 10.3.13.1 Low Dropout Voltage Regulators
        2. 10.3.13.2 White LED Boost Converter
        3. 10.3.13.3 A/D Converter
        4. 10.3.13.4 Touch Screen Interface (only for TPS65070, TPS65073, TPS650731, TPS650732)
          1. 10.3.13.4.1 Performing Measurements Using the Touch Screen Controller
    4. 10.4 Device Functional Modes
    5. 10.5 Programming
      1. 10.5.1 I2C Interface Specification
        1. 10.5.1.1 Serial interface
    6. 10.6 Register Maps
      1. 10.6.1  PPATH1. Register Address: 01h
      2. 10.6.2  INT. Register Address: 02h
      3. 10.6.3  CHGCONFIG0. Register Address: 03h
      4. 10.6.4  CHGCONFIG1. Register Address: 04h
      5. 10.6.5  CHGCONFIG2. Register Address: 05h
      6. 10.6.6  CHGCONFIG3. Register Address: 06h
      7. 10.6.7  ADCONFIG. Register Address: 07h
      8. 10.6.8  TSCMODE. Register Address: 08h
      9. 10.6.9  ADRESULT_1. Register Address: 09h
      10. 10.6.10 ADRESULT_2. Register Address: 0Ah
      11. 10.6.11 PGOOD. Register Address: 0Bh
      12. 10.6.12 PGOODMASK. Register Address: 0Ch
      13. 10.6.13 CON_CTRL1. Register Address: 0Dh
      14. 10.6.14 CON_CTRL2. Register Address: 0Eh
      15. 10.6.15 CON_CTRL3. Register Address: 0Fh
      16. 10.6.16 DEFDCDC1. Register Address: 10h
      17. 10.6.17 DEFDCDC2_LOW. Register Address: 11h
      18. 10.6.18 DEFDCDC2_HIGH. Register Address: 12h
      19. 10.6.19 DEFDCDC3_LOW. Register Address: 13h
      20. 10.6.20 DEFDCDC3_HIGH. Register Address: 14h
      21. 10.6.21 DEFSLEW. Register Address: 15h
      22. 10.6.22 LDO_CTRL1. Register Address: 16h
      23. 10.6.23 DEFLDO2. Register Address: 17h
      24. 10.6.24 WLED_CTRL1. Register Address: 18h
      25. 10.6.25 WLED_CTRL2. Register Address: 19h
  11. 11Application and Implementation
    1. 11.1 Application Information
      1. 11.1.1 Power Solutions For Different Application Processors
        1. 11.1.1.1 Default Settings
        2. 11.1.1.2 Starting TPS6507x
    2. 11.2 Typical Applications
      1. 11.2.1 General PMIC Application
        1. 11.2.1.1 Design Requirements
        2. 11.2.1.2 Detailed Design Procedure
          1. 11.2.1.2.1 Output Filter Design (Inductor and Output Capacitor)
            1. 11.2.1.2.1.1 Inductor Selection
            2. 11.2.1.2.1.2 Output Capacitor Selection
            3. 11.2.1.2.1.3 Input Capacitor Selection/Input Voltage
            4. 11.2.1.2.1.4 Output Voltage Selection
            5. 11.2.1.2.1.5 Voltage Change on DCDC2 and DCDC3
          2. 11.2.1.2.2 LDOs
            1. 11.2.1.2.2.1 Output Capacitor Selection
            2. 11.2.1.2.2.2 Input Capacitor Selection
            3. 11.2.1.2.2.3 Output Voltage Change For LDO1 and LDO2
            4. 11.2.1.2.2.4 Unused LDOs
          3. 11.2.1.2.3 White-LED Boost Converter
            1. 11.2.1.2.3.1 LED-Current Setting/Dimming
            2. 11.2.1.2.3.2 Setup
            3. 11.2.1.2.3.3 Setting the LED Current
            4. 11.2.1.2.3.4 Inductor Selection
            5. 11.2.1.2.3.5 Diode Selection
            6. 11.2.1.2.3.6 Output Capacitor Selection
            7. 11.2.1.2.3.7 Input Capacitor Selection
          4. 11.2.1.2.4 Battery Charger
            1. 11.2.1.2.4.1 Temperature Sensing
            2. 11.2.1.2.4.2 Changing the Charging Temperature Range (Default 0°C to 45°C)
        3. 11.2.1.3 Application Curves
      2. 11.2.2 Powering OMAP-L138
        1. 11.2.2.1 Design Requirements
        2. 11.2.2.2 Detailed Design Procedure
      3. 11.2.3 Powering Atlas IV
        1. 11.2.3.1 Design Requirements
        2. 11.2.3.2 Detailed Design Procedure
          1. 11.2.3.2.1 Prima SLEEP Mode and DEEP SLEEP Mode Support
          2. 11.2.3.2.2 SLEEP Mode
          3. 11.2.3.2.3 DEEP SLEEP Mode
      4. 11.2.4 OMAP35xx (Supporting SYS-OFF Mode)
        1. 11.2.4.1 Design Requirements
        2. 11.2.4.2 Detailed Design Procedure
      5. 11.2.5 TPS650731 for OMAP35xx
        1. 11.2.5.1 Design Requirements
        2. 11.2.5.2 Detailed Design Procedure
      6. 11.2.6 Powering AM3505 Using TPS650732
        1. 11.2.6.1 Design Requirements
        2. 11.2.6.2 Detailed Design Procedure
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Device Support
      1. 14.1.1 Third-Party Products Disclaimer
    2. 14.2 Documentation Support
      1. 14.2.1 Related Documentation
    3. 14.3 Related Links
    4. 14.4 Receiving Notification of Documentation Updates
    5. 14.5 Community Resources
    6. 14.6 Trademarks
    7. 14.7 Electrostatic Discharge Caution
    8. 14.8 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

10.3.13.4.1 Performing Measurements Using the Touch Screen Controller

To take measurements with the touch screen controller, the ADC has to be enabled and configured for use with the touch screen controller (TSC) first. In case the TSC is planned to be operated interrupt driven, the TSC needs to be in TSC standby mode per default. Only in TSC standby mode an interrupt is generated based on a touch of the screen. The TSC should therefore be in this mode until a touch is detected. Afterwards, the TSC has to be configured for x-position measurement followed by y-position measurement. Now, the TSC can be set to TSC standby again to wait for the next touch of the screen. For a non-interrupt driven sequence, see TSCMODE. Register Address: 08h (page 50) in the Registers section. A typical interrupt driven sequence is given below:

  • Set TSCMODE to 101 to set TSC to TSC standby, so an interrupt is generated when the screen is touched
  • Set Bit AD enable = 1 to provide power to the ADC
  • Set input select for the ADC in register ADCONFIG to 1110 (AD_IN14 selected)
  • In register INT, set MASK TSC = 1 to unmask the interrupt on a touch of the touch screen
  • Read Bit TSC INT as it will be set after the TSC has been configured. Reading clears the interrupt.
  • After a touch was detected, an interrupt is generated by INT pin going LOW
  • Read Bit TSC INT to clear the interrupt
  • Set TSCMODE to 000 to select x-position measurement
  • Start an ADC conversion by setting CONVERSION START =1; wait until END OF CONVERSION = 1
  • Read register ADRESULT_1 and AD_RESULT_2
  • Set TSCMODE to 001 to select y-position measurement
  • Start an ADC conversion by setting CONVERSION START =1; wait until END OF CONVERSION = 1
  • Read register ADRESULT_1 and AD_RESULT_2
  • Set TSCMODE to 101 to set TSC to TSC standby again
TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 two_posi_lvs950.gifFigure 36. Two Position Measurement
TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 press_meas_lvs950.gifFigure 37. Pressure Measurement
TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 two_plate_lvs950.gifFigure 38. Two Plate Resistance Measurement
TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 standby_lvs950.gifFigure 39. Touch Screen Standby Mode