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

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

10.3.13.4 Touch Screen Interface (only for TPS65070, TPS65073, TPS650731, TPS650732)

The touch screen itself consists of two parallel plates, called the X and Y plates, separated by short distance; contact is initiated by using a stylus or your finger. This action creates a series of resistances noted by RX1, RX2, RY1, RY2 , and Rcontact, shown in Figure 36. The points shown in the diagram as TSX1, TSX2, TSY1 and TSY2 are connected to the TPS6507x touch screen interface. The resistances RX1 and RX2 scale linearly with the x-position of the point of contact, where the RY1 and RY2 resistances scale with the y-position. The Rcontact resistance decreases as the pressure applied at the point of contact increases and increases as the pressure decreases. Using these relationships, the touch screen interface can make measurements of either position or pressure.

TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 touch_sc_lvs950.gifFigure 35. Touch Screen

The touch screen interface consists of a digital state machine, a voltage reference, and an analog switch matrix which is connected to the four wire resistive touch screen inputs (TSX1, TSX2, TSY1, TSY2) and an internal 10-Bit ADC. The state machine controls the sequencing of the switch matrix to cycle through the three types of measurement modes (position, pressure, plate resistance) and the low power standby mode. The separate internal voltage reference (TSREF) is disabled in standby and off modes. The voltage is generated by an internal LDO. Its voltage is bypassed by a capacitor connected to pin INT_LDO. The state of the touch screen is controlled by the TSC_M[2,0] Bits of the TSCMODE register (08h) as shown in Table 3. The touch screen controller uses transfer gates to the internal ADC on input channels AD_IN14 and AD_IN15.

Table 3. TSC Modes

CONTROL MULTIPLEXER CONNECTIONS MODE MEASUREMENT
TSC_M2 TSC_M1 TSC_M0 TSX1 TSX2 TSY1 TSY2
0 0 0 TSREF
PMOS		 GND
NMOS		 ADC_IN3
TGATE		 ADC_IN4
TGATE		 X-Position Voltage TSY1
0 0 1 ADC_IN1
TGATE		 ADC_IN2
TGATE		 TSREF
PMOS		 GND
NMOS		 Y-Position Voltage TSX1
0 1 0 TSREF TSREF GND
NMOS		 GND
NMOS		 Pressure Current TSX1 and TSX2
0 1 1 TSREF
PMOS		 GND
NMOS		 HiZ HiZ Plate X
Reading on ADC_IN14		 Current TSX1
1 0 0 HiZ HiZ TSREF
PMOS		 GND
NMOS		 Plate Y
Reading on ADC_IN14		 Current TSY1
1 0 1 TSREF
TGATE		 TSREF
TGATE		 GND
NMOS		 GND
NMOS		 TSC standby Voltage TSX1 and TSX2
1 1 0 A/D
TGATE		 A/D
TGATE		 A/D
TGATE		 A/D
TGATE		 A/D ADC used as stand alone
ADC using its analog inputs
1 1 1 OPEN OPEN OPEN OPEN Disabled (no interrupt) None

If the Touch screen multiplexer is set to disabled mode [111], touch to the screen will not be detected. Standby mode is entered by setting TSC_M[2:0] to 101. When there is a touch, the controller will detect a change in voltage at the TSX1 point and after a 8ms deglitch the INT pin will be asserted if the interrupt is unmasked in register INT. Once the host detects the interrupt signal, will enable the ADC converter and set the TSC_M<2:0> through the I2C bus to select any of five measurements (position, pressure, plate) as shown in Table 4.

Table 4. TSC Equations

MEASUREMENT CHANNEL EQUATION
X Plate resistance AD_IN14 Rx = VTSREF/ [(VADC / 22k) × 150]
Y plate resistance AD_IN14 Ry = VTSREF / [(VADC / 22k) × 150]
X position AD_IN14 Xpos = Rx2 / (Rx1 + Rx2) = Rx2 / Rx
Rx2 = VADC x Rx/ VTSREF; Rx1 = Rx – Rx2
Xpos = ADRESULT / 1024
Y position AD_IN14 Ypos = Ry2 / (Ry1 + Ry2) = Ry2 / Ry
Ry2 = VADC x Ry/ VTSREF; Ry1 = Ry – Ry2
Ypos = ADRESULT / 1024
Pressure AD_IN14 Rc = R – Rx1//Rx2 – Ry1//Ry2
R = VTSREF/ [(VADC / 22k) × 150]
Rx1//Rx2 = Rx × Xpos × (1 – Xpos)
Ry1//Ry2 = Ry × Ypos × (1 – Ypos)