SWCS138F June   2017  – October 2024 TPS650864

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: Total Current Consumption
    6. 6.6  Electrical Characteristics: Reference and Monitoring System
    7. 6.7  Electrical Characteristics: Buck Controllers
    8. 6.8  Electrical Characteristics: Synchronous Buck Converters
    9. 6.9  Electrical Characteristics: LDOs
    10. 6.10 Electrical Characteristics: Load Switches
    11. 6.11 Digital Signals: I2C Interface
    12. 6.12 Digital Input Signals (CTLx)
    13. 6.13 Digital Output Signals (IRQB, GPOx)
    14. 6.14 Timing Requirements
    15. 6.15 Switching Characteristics
    16. 6.16 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1  Overview
    2. 7.2  Functional Block Diagram
    3. 7.3  TPS6508640 Design and Settings
      1. 7.3.1 TPS6508640 OTP Summary
    4. 7.4  TPS65086401 Design and Settings
      1. 7.4.1 TPS65086401 OTP Summary
      2.      31
    5. 7.5  TPS6508641 Design and Settings
      1. 7.5.1 TPS6508641 OTP Summary
    6. 7.6  TPS65086470 Design and Settings
      1. 7.6.1 TPS65086470 OTP Summary
    7. 7.7  SMPS Voltage Regulators
      1. 7.7.1 Controller Overview
      2. 7.7.2 Converter Overview
      3. 7.7.3 DVS
      4. 7.7.4 Decay
      5. 7.7.5 Current Limit
    8. 7.8  LDOs and Load Switches
      1. 7.8.1 VTT LDO
      2. 7.8.2 LDOA1–LDOA3
      3. 7.8.3 Load Switches
    9. 7.9  Power Goods (PGOOD or PG) and GPOs
    10. 7.10 Power Sequencing and VR Control
      1. 7.10.1 CTLx Sequencing
      2. 7.10.2 PG Sequencing
      3. 7.10.3 Enable Delay
      4. 7.10.4 Power-Up Sequence
      5. 7.10.5 Power-Down Sequence
      6. 7.10.6 Sleep State Entry and Exit
      7. 7.10.7 Emergency Shutdown
    11. 7.11 Device Functional Modes
      1. 7.11.1 Off Mode
      2. 7.11.2 Standby Mode
      3. 7.11.3 Active Mode
    12. 7.12 I2C Interface
      1. 7.12.1 F/S-Mode Protocol
    13. 7.13 Register Maps
      1. 7.13.1  Register Map Summary
      2. 7.13.2  DEVICEID1: 1st PMIC Device and Revision ID Register (offset = 00h) [reset = X]
      3. 7.13.3  DEVICEID2: 2nd PMIC Device and Revision ID Register (offset = 01h) [reset = X]
      4. 7.13.4  IRQ: PMIC Interrupt Register (offset = 02h) [reset = 0000 0000]
      5. 7.13.5  IRQ_MASK: PMIC Interrupt Mask Register (offset = 03h) [reset = 1111 1111]
      6. 7.13.6  PMICSTAT: PMIC Status Register (offset = 04h) [reset = 0000 0000]
      7. 7.13.7  SHUTDNSRC: PMIC Shut-Down Event Register (offset = 05h) [reset = 0000 0000]
      8. 7.13.8  BUCK1CTRL: BUCK1 Control Register (offset = 20h) [reset = X]
      9. 7.13.9  BUCK2CTRL: BUCK2 Control Register (offset = 21h) [reset = X]
      10. 7.13.10 BUCK3DECAY: BUCK3 Decay Control Register (offset = 22h) [reset = X]
      11. 7.13.11 BUCK3VID: BUCK3 VID Register (offset = 23h) [reset = X]
      12. 7.13.12 BUCK3SLPCTRL: BUCK3 Sleep Control VID Register (offset = 24h) [reset = X]
      13. 7.13.13 BUCK4CTRL: BUCK4 Control Register (offset = 25h) [reset = X]
      14. 7.13.14 BUCK5CTRL: BUCK5 Control Register (offset = 26h) [reset = X]
      15. 7.13.15 BUCK6CTRL: BUCK6 Control Register (offset = 27h) [reset = X]
      16. 7.13.16 LDOA2CTRL: LDOA2 Control Register (offset = 28h) [reset = X]
      17. 7.13.17 LDOA3CTRL: LDOA3 Control Register (offset = 29h) [reset = X]
      18. 7.13.18 DISCHCTRL1: 1st Discharge Control Register (offset = 40h) [reset = X]
      19. 7.13.19 DISCHCTRL2: 2nd Discharge Control Register (offset = 41h) [reset = X]
      20. 7.13.20 DISCHCTRL3: 3rd Discharge Control Register (offset = 42h) [reset = X]
      21. 7.13.21 PG_DELAY1: 1st Power Good Delay Register (offset = 43h) [reset = X]
      22. 7.13.22 FORCESHUTDN: Force Emergency Shutdown Control Register (offset = 91h) [reset = 0000 0000]
      23. 7.13.23 BUCK1SLPCTRL: BUCK1 Sleep Control Register (offset = 92h) [reset = X]
      24. 7.13.24 BUCK2SLPCTRL: BUCK2 Sleep Control Register (offset = 93h) [reset = X]
      25. 7.13.25 BUCK4VID: BUCK4 VID Register (offset = 94h) [reset = X]
      26. 7.13.26 BUCK4SLPVID: BUCK4 Sleep VID Register (offset = 95h) [reset = X]
      27. 7.13.27 BUCK5VID: BUCK5 VID Register (offset = 96h) [reset = X]
      28. 7.13.28 BUCK5SLPVID: BUCK5 Sleep VID Register (offset = 97h) [reset = X]
      29. 7.13.29 BUCK6VID: BUCK6 VID Register (offset = 98h) [reset = X]
      30. 7.13.30 BUCK6SLPVID: BUCK6 Sleep VID Register (offset = 99h) [reset = X]
      31. 7.13.31 LDOA2VID: LDOA2 VID Register (offset = 9Ah) [reset = X]
      32. 7.13.32 LDOA3VID: LDOA3 VID Register (offset = 9Bh) [reset = X]
      33. 7.13.33 BUCK123CTRL: BUCK1-3 Control Register (offset = 9Ch) [reset = X]
      34. 7.13.34 PG_DELAY2: 2nd Power Good Delay Register (offset = 9Dh) [reset = X]
      35. 7.13.35 SWVTT_DIS: SWVTT Disable Register (offset = 9Fh) [reset = X]
      36. 7.13.36 I2C_RAIL_EN1: 1st VR Pin Enable Override Register (offset = A0h) [reset = X]
      37. 7.13.37 I2C_RAIL_EN2/GPOCTRL: 2nd VR Pin Enable Override and GPO Control Register (offset = A1h) [reset = X]
      38. 7.13.38 PWR_FAULT_MASK1: 1st VR Power Fault Mask Register (offset = A2h) [reset = X]
      39. 7.13.39 PWR_FAULT_MASK2: 2nd VR Power Fault Mask Register (offset = A3h) [reset = X]
      40. 7.13.40 GPO1PG_CTRL1: 1st GPO1 PG Control Register (offset = A4h) [reset = X]
      41. 7.13.41 GPO1PG_CTRL2: 2nd GPO1 PG Control Register (offset = A5h) [reset = X]
      42. 7.13.42 GPO4PG_CTRL1: 1st GPO4 PG Control Register (offset = A6h) [reset = X]
      43. 7.13.43 GPO4PG_CTRL2: 2nd GPO4 PG Control Register (offset = A7h) [reset = X]
      44. 7.13.44 GPO2PG_CTRL1: 1st GPO2 PG Control Register (offset = A8h) [reset = X]
      45. 7.13.45 GPO2PG_CTRL2: 2nd GPO2 PG Control Register (offset = A9h) [reset = X]
      46. 7.13.46 GPO3PG_CTRL1: 1st GPO3 PG Control Register (offset = AAh) [reset = X]
      47. 7.13.47 GPO3PG_CTRL2: 2nd GPO3 PG Control Register (offset = ABh) [reset = X]
      48. 7.13.48 MISCSYSPG Register (offset = ACh) [reset = X]
        1. 7.13.48.1 VTT_DISCH_CTRL Register (offset = ADh) [reset = X]
      49. 7.13.49 LDOA1_SWB2_CTRL: LDOA1 and SWB2 Control Register (offset = AEh) [reset = X]
      50. 7.13.50 PG_STATUS1: 1st Power Good Status Register (offset = B0h) [reset = 0000 0000]
      51. 7.13.51 PG_STATUS2: 2nd Power Good Status Register (offset = B1h) [reset = 0000 0000]
      52. 7.13.52 PWR_FAULT_STATUS1: 1st Power Fault Status Register (offset = B2h) [reset = 0000 0000]
      53. 7.13.53 PWR_FAULT_STATUS2: 2nd Power Fault Status Register (offset = B3h) [reset = 0000 0000]
      54. 7.13.54 TEMPCRIT: Temperature Fault Status Register (offset = B4h) [reset = 0000 0000]
      55. 7.13.55 TEMPHOT: Temperature Hot Status Register (offset = B5h) [reset = 0000 0000]
      56. 7.13.56 OC_STATUS: Overcurrent Fault Status Register (offset = B6h) [reset = 0000 0000]
  9. 8 Applications, Implementation, and Layout
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Controller Design Procedure
          1. 8.2.2.1.1 Selecting the Inductor
          2. 8.2.2.1.2 Selecting the Output Capacitors
          3. 8.2.2.1.3 Selecting the FETs
          4. 8.2.2.1.4 Bootstrap Capacitor
          5. 8.2.2.1.5 Setting the Current Limit
          6. 8.2.2.1.6 Selecting the Input Capacitors
        2. 8.2.2.2 Converter Design Procedure
          1. 8.2.2.2.1 Selecting the Inductor
          2. 8.2.2.2.2 Selecting the Output Capacitors
          3. 8.2.2.2.3 Selecting the Input Capacitors
        3. 8.2.2.3 LDO Design Procedure
      3. 8.2.3 Application Curves
      4. 8.2.4 Layout
        1. 8.2.4.1 Layout Guidelines
        2. 8.2.4.2 Layout Example
      5. 8.2.5 VIN 5-V Application
        1. 8.2.5.1 Design Requirements
        2. 8.2.5.2 Design Procedure
        3. 8.2.5.3 Application Curves
    3. 8.3 Power Supply Coupling and Bulk Capacitors
    4. 8.4 Do's and Don'ts
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information
8.2.2.2.2 Selecting the Output Capacitors

Ceramic capacitors with low ESR values are recommended because they provide the lowest output voltage ripple. The output capacitor requires either an X7R or X5R rating. Y5V and Z5U capacitors, aside from the wide variation in capacitance over temperature, become resistive at high frequencies.

At light load currents, the converter operates in PFM mode and the output voltage ripple is dependent on the output-capacitor value and the PFM peak inductor current. Higher output-capacitor values minimize the voltage ripple in PFM mode. To achieve specified regulation performance and low output voltage ripple, the DC-bias characteristic of ceramic capacitors must be considered. The effective capacitance of ceramic capacitors drops with increasing DC-bias voltage.

For the output capacitors of the BUCK converters, TI recommends placing small ceramic capacitors between the inductor and load with many vias to the PGND plane. This solution typically provides the smallest and lowest-cost solution available.

The minimum output capacitance recommended is 22 µF for stability. Equation 7 and Equation 8 can be used to estimate the required output capacitance for a given load transient. Note that VIN will be different for the converters and that the switching frequency can be estimated using Section 6.15. Equation 9 can be neglected for converters as there is no on time extension and the VIN - VOUT term is typically smaller.