SLVSB64I November   2011  – March 2018 TPS65217

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Application Diagram
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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
    6. 7.6 I2C Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Wake-Up and Power-Up Sequencing
        1. 8.3.1.1 Power-Up Sequencing
        2. 8.3.1.2 Power-Down Sequencing
        3. 8.3.1.3 Special Strobes (STROBE 14 and 15)
      2. 8.3.2  Power Good
        1. 8.3.2.1 LDO1, LDO2 Power-Good (LDO_PGOOD)
        2. 8.3.2.2 Primary Power-Good (PGOOD)
        3. 8.3.2.3 Load Switch PGOOD
      3. 8.3.3  Push-Button Monitor (PB_IN)
      4. 8.3.4  nWAKEUP Pin (nWAKEUP)
      5. 8.3.5  Power Enable Pin (PWR_EN)
      6. 8.3.6  Reset Pin (nRESET)
      7. 8.3.7  Interrupt Pin (nINT)
      8. 8.3.8  Analog Multiplexer
      9. 8.3.9  Battery Charger and Power Path
        1. 8.3.9.1 Shorted or Absent Battery (VBAT < 1.5 V)
        2. 8.3.9.2 Dead Battery (1.5 V < VBAT < VUVLO)
        3. 8.3.9.3 Good Battery (VBAT > VUVLO)
        4. 8.3.9.4 AC and USB Input Discharge
      10. 8.3.10 Battery Charging
      11. 8.3.11 Precharge
      12. 8.3.12 Charge Termination
      13. 8.3.13 Battery Detection and Recharge
      14. 8.3.14 Safety Timer
        1. 8.3.14.1 Dynamic Timer Function
        2. 8.3.14.2 Timer Fault
      15. 8.3.15 Battery-Pack Temperature Monitoring
      16. 8.3.16 DC/DC Converters
        1. 8.3.16.1 Operation
        2. 8.3.16.2 Output Voltage Setting
        3. 8.3.16.3 Power-Save Mode and Pulse-Frequency Modulation (PFM)
        4. 8.3.16.4 Dynamic Voltage Positioning
        5. 8.3.16.5 100% Duty-Cycle Low-Dropout Operation
        6. 8.3.16.6 Short-Circuit Protection
        7. 8.3.16.7 Soft Start
      17. 8.3.17 Standby LDO Regulators (LDO1, LDO2)
      18. 8.3.18 Load Switches or LDO Regulators (LS1 or LDO3, LS2 or LDO4)
      19. 8.3.19 White LED Driver
    4. 8.4 Device Functional Modes
      1. 8.4.1 PMIC States
        1. 8.4.1.1 OFF State
        2. 8.4.1.2 ACTIVE State
        3. 8.4.1.3 SLEEP State
        4. 8.4.1.4 RESET State
    5. 8.5 Programming
      1. 8.5.1 I2C Bus Operation
      2. 8.5.2 Password Protection
        1. 8.5.2.1 Level1 Protection
        2. 8.5.2.2 Level2 Protection
      3. 8.5.3 Resetting of Registers to Default Values
    6. 8.6 Register Maps
      1. 8.6.1  Register Address Map
      2. 8.6.2  Chip ID Register (CHIPID) (Address = 0x00) [reset = X]
        1. Table 2. CHIPID Register Field Descriptions
      3. 8.6.3  Power Path Control Register (PPATH) (Address = 0x01) [reset = 0x3D]
        1. Table 3. PPATH Register Field Descriptions
      4. 8.6.4  Interrupt Register (INT) (Address = 0x02) [reset = 0x80]
        1. Table 4. INT Register Field Descriptions
      5. 8.6.5  Charger Configuration Register 0 (CHGCONFIG0) (Address = 0x03) [reset = 0x00]
        1. Table 5. CHGCONFIG0 Register Field Descriptions
      6. 8.6.6  Charger Configuration Register 1 (CHGCONFIG1) (Address = 0x04) [reset = 0xB1]
        1. Table 6. CHGCONFIG1 Register Field Descriptions
      7. 8.6.7  Charger Configuration Register 2 (CHGCONFIG2) (Address = 0x05) [reset = 0x80]
        1. Table 7. CHGCONFIG2 Register Field Descriptions
      8. 8.6.8  Charger Configuration Register 3 (CHGCONFIG3) (Address = 0x06) [reset = 0xB2]
        1. Table 8. CHGCONFIG3 Register Field Descriptions
      9. 8.6.9  WLED Control Register 1 (WLEDCTRL1) (Address = 0x07) [reset = 0xB1]
        1. Table 9. WLEDCTRL1 Register Field Descriptions
      10. 8.6.10 WLED Control Register 2 (WLEDCTRL2) (Address = 0x08) [reset = 0x00]
        1. Table 10. WLEDCTRL2 Register Field Descriptions
      11. 8.6.11 MUX Control Register (MUXCTRL) (Address = 0x09) [reset = 0x00]
        1. Table 11. MUXCTRL Register Field Descriptions
      12. 8.6.12 Status Register (STATUS) (Address = 0x0A) [reset = 0x00]
        1. Table 12. STATUS Register Field Descriptions
      13. 8.6.13 Password Register (PASSWORD) (Address = 0x0B) [reset = 0x00]
        1. Table 13. Password Register (PASSWORD) Field Descriptions
      14. 8.6.14 Power Good Register (PGOOD) (Address = 0x0C) [reset = 0x00]
        1. Table 14. PGOOD Register Field Descriptions
      15. 8.6.15 Power-Good Control Register (DEFPG) (Address = 0x0D) [reset = 0x0C]
        1. Table 15. DEFPG Register Field Descriptions
      16. 8.6.16 DCDC1 Control Register (DEFDCDC1) (Address = 0x0E) [reset = X]
        1. Table 16. DEFDCDC1 Register Field Descriptions
      17. 8.6.17 DCDC2 Control Register (DEFDCDC2) (Address = 0x0F) [reset = X]
        1. Table 17. DEFDCDC2 Register Field Descriptions
      18. 8.6.18 DCDC3 Control Register (DEFDCDC3) (Address = 0x10) [reset = 0x08]
        1. Table 18. DEFDCDC3 Register Field Descriptions
      19. 8.6.19 Slew-Rate Control Register (DEFSLEW) (Address = 0x11) [reset = 0x06]
        1. Table 19. DEFSLEW Register Field Descriptions
      20. 8.6.20 LDO1 Control Register (DEFLDO1) (Address = 0x12) [reset = 0x09]
        1. Table 20. DEFLDO1 Register Field Descriptions
      21. 8.6.21 LDO2 Control Register (DEFLDO2) (Address = 0x13) [reset = 0x38]
        1. Table 21. DEFLDO2 Register Field Descriptions
      22. 8.6.22 Load Switch1 or LDO3 Control Register (DEFLS1) (Address = 0x14) [reset = X]
        1. Table 22. DEFLS1 Register Field Descriptions
      23. 8.6.23 Load Switch2 or LDO4 Control Register (DEFLS2) (Address = 0x15) [reset = X]
        1. Table 23. DEFLS2 Register Field Descriptions
      24. 8.6.24 Enable Register (ENABLE) (Address = 0x16) [reset = 0x00]
        1. Table 24. ENABLE Register Field Descriptions
      25. 8.6.25 UVLO Control Register (DEFUVLO) (Address = 0x18) [reset = 0x03]
        1. Table 25. DEFUVLO Register Field Descriptions
      26. 8.6.26 Sequencer Register 1 (SEQ1) (Address = 0x19) [reset = X]
        1. Table 26. SEQ1 Register Field Descriptions
      27. 8.6.27 Sequencer Register 2 (SEQ2) (Address = 0x1A) [reset = X]
        1. Table 27. SEQ2 Register Field Descriptions
      28. 8.6.28 Sequencer Register 3 (SEQ3) (Address = 0x1B) [reset = X]
        1. Table 28. SEQ3 Register Field Descriptions
      29. 8.6.29 Sequencer Register 4 (SEQ4) (Address = 0x1C) [reset = 0x40]
        1. Table 29. SEQ4 Register Field Descriptions
      30. 8.6.30 Sequencer Register 5 (SEQ5) (Address = 0x1D) [reset = X]
        1. Table 30. SEQ5 Register Field Descriptions
      31. 8.6.31 Sequencer Register 6 (SEQ6) (Address = 0x1E) [reset = 0x00]
        1. Table 31. SEQ6 Register Field Descriptions
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.1.1 Inductor Selection for Buck Converters
          2. 9.2.2.1.2 Output Capacitor Selection
          3. 9.2.2.1.3 Input Capacitor Selection
        2. 9.2.2.2 5-V Operation Without a Battery
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

9.2.2.2 5-V Operation Without a Battery

The TPS65217x device has a linear charger for Li+ batteries, and TI recommends that a battery is included in designs for ideal performance. However, the device can operate without a battery attached. Three basic use cases are available for operation without a battery:

  1. The system is designed for battery operation, but the battery is removable and the end user does not have the battery inserted. The system can be powered by connecting an AC adaptor or USB supply.
  2. A nonportable system operates on a (regulated) 5-V supply, but the PMIC must provide protection against input overvoltage up to 20 V. Electrically, this case is the same as the previous case where the device is powered by an AC adaptor. The battery pins (BAT and BATSENSE) are shorted together and floating, the temperature sensing pin (TS) is left floating, and power is provided through the AC pin. The DC/DC converters, the WLED driver, and the LDO regulators connect to the overvoltage-protected SYS pins. The load switches (or LDO3 and LDO4, depending on configuration) typically connect to one of the lower system rails, but can also be connected to the SYS pin.
  3. A nonportable system operates on a regulated 5-V supply that does not require input overvoltage protection. In this case, the 5-V power supply is connected through the BAT pins. The DC/DC converter inputs, WLED driver, LDO1, and LDO2 are connected directly to the 5-V supply. A standard, constant-value 10-kΩ resistor is connected from the TS pin to ground to simulate the NTC thermistor monitoring the battery. The load switches (or LDO3 and LDO4, depending on configuration) typically connect to one of the lower system rails, but can also be connected directly to the 5-V input supply.

Figure 61 shows the connection of the input power supply to the device for 5-V only operation, with 20-V input overvoltage protection. Figure 62 shows the connection of the input power supply to the device for 5-V only operation without 20-V input overvoltage protection. Table 37 lists the functional differences between both setups.

TPS65217 batteryless_5v_lvsb643.gif
The SYS node and DC/DC converters are protected against input overvoltage up to 20 V.
Figure 61. Power Connection for 5-V Only Operation With OVP, Without a Battery
TPS65217 batteryless_5v_2_lvsb643.gif
1. The DC/DC converters are not protected against input overvoltage.
Figure 62. Power Connection for 5-V Only Operation Directly Wired to BAT Instead of a Battery

Table 37. Functional Differences Between 5-V Only Operation Without a Battery and With and Without 20-V Input Overvoltage Protection

RESOURCE IMPACTED POWER SUPPLIED THROUGH AC PIN
(CASE (1) AND (2))		 POWER SUPPLIED THROUGH BAT PIN
(CASE (3))
Input protection The maximum operating input voltage is 5.8 V, but the device is protected from input overvoltage up to 20 V. The maximum operating input voltage is 5.5 V.
Power efficiency The input current for DC/DC converters passes through AC-SYS power-path switch (approximately 150 mΩ). The internal power path is bypassed to minimize I2R losses.
BATTEMP bit The BATTEMP bit (bit 0 in register 0x03) always reads 1, but has no effect on operation of the device. The BATTEMP bit (bit 0 in register 0x03) always reads 0.
Output rail status on initial power connection The LDO1 regulator is automatically powered up when the AC pin is connected to the 5-V supply, and the device goes to the WAIT PWR_EN state. If the PWR_EN pin is not asserted within 5 s, the LDO1 regulator turns OFF. The LDO1 regulator is OFF when the BAT pin is connected to the 5-V supply. The PB_IN pin must be pulled low to go to the WAIT PWR_EN state. The PB_IN pin cannot stay low for greater than 8 s or a reset will occur.
Response to input overvoltage Device goes to the OFF state.(1) Not applicable
Power path In an application with one source of input power, if the input power drops below UVLO and recovers before reaching 100 mV, the rising edge may not be detected by the device. This condition, known as a brownout, can cause a lockup of the device in which the I2C is responsive but SYS is not connected to the AC or USB through the power path. (2) Not applicable
(1) If a battery is present in the system, the TPS65217x device automatically switches from using the AC pin as the power supply to using BAT as the supply when the AC input exceeds 6.4 V. The device automatically switches back to supplying power from the AC pin when the AC input recovers and the voltages decreases to less than 5.8 V.
(2) As a workaround, supply power through the BAT input pin or change UVLO to 2.73 V by changing the UVLO[1:0] bits in register 0x18 to 00b. This setting must be changed during initialization after the first power-on event of the device. The bits return to the default value when all I2C registers reset. As a result, if a brownout condition can occur during the first power-on event, then external circuitry must be added to prevent the TPS65217x device from being affected by the brownout condition.