JAJSMG2 November   2023 TPS6287B10 , TPS6287B25

PRODMIX  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Options
  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
    6. 6.6 I2C Interface Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Fixed-Frequency DCS-Control Topology
      2. 8.3.2  Forced-PWM and Power-Save Modes
      3. 8.3.3  Transient Non-Synchronous Mode (optional)
      4. 8.3.4  Precise Enable
      5. 8.3.5  Start-Up
      6. 8.3.6  Output Voltage Setting
        1. 8.3.6.1 Output Voltage Range
        2. 8.3.6.2 Output Voltage Setpoint
        3. 8.3.6.3 Non-Default Output Voltage Setpoint
        4. 8.3.6.4 Dynamic Voltage Scaling
        5. 8.3.6.5 Droop Compensation
      7. 8.3.7  Compensation (COMP)
      8. 8.3.8  Mode Selection / Clock Synchronization (MODE/SYNC)
      9. 8.3.9  Spread Spectrum Clocking (SSC)
      10. 8.3.10 Output Discharge
      11. 8.3.11 Undervoltage Lockout (UVLO)
      12. 8.3.12 Overvoltage Lockout (OVLO)
      13. 8.3.13 Overcurrent Protection
        1. 8.3.13.1 Cycle-by-Cycle Current Limiting
        2. 8.3.13.2 Hiccup Mode
        3. 8.3.13.3 Current-Limit Mode
      14. 8.3.14 Power Good (PG)
        1. 8.3.14.1 Standalone / Primary Device Behavior
        2. 8.3.14.2 Secondary Device Behavior
      15. 8.3.15 Remote Sense
      16. 8.3.16 Thermal Warning and Shutdown
      17. 8.3.17 Stacked Operation
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-On Reset
      2. 8.4.2 Undervoltage Lockout
      3. 8.4.3 Standby
      4. 8.4.4 On
    5. 8.5 Programming
      1. 8.5.1 Serial Interface Description
      2. 8.5.2 Standard-, Fast-, Fast-Mode Plus Protocol
      3. 8.5.3 HS-Mode Protocol
      4. 8.5.4 I2C Update Sequence
      5. 8.5.5 I2C Register Reset
      6. 8.5.6 Dynamic Voltage Scaling (DVS)
  10. 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 Inductor Selection
        2. 9.2.2.2 Selecting the Input Capacitors
        3. 9.2.2.3 Selecting the Compensation Resistor
        4. 9.2.2.4 Selecting the Output Capacitors
        5. 9.2.2.5 Selecting the Compensation Capacitor CC
        6. 9.2.2.6 Selecting the Compensation Capacitor CC2
      3. 9.2.3 Application Curves
    3. 9.3 Typical Application - TPS6287BxV Devices
      1. 9.3.1 Design Requirements for TPS6287BxV
    4. 9.4 Typical Application Using Two TPS6287B25 in a Stacked Configuration
      1. 9.4.1 Design Requirements For Two Stacked Devices
      2. 9.4.2 Detailed Design Procedure
        1. 9.4.2.1 Selecting the Compensation Resistor
        2. 9.4.2.2 Selecting the Output Capacitors
        3. 9.4.2.3 Selecting the Compensation Capacitor CC
      3. 9.4.3 Application Curves for Two Stacked Devices
    5. 9.5 Typical Application Using Three TPS6287B25 in a Stacked Configuration
      1. 9.5.1 Application Curves
    6. 9.6 Power Supply Recommendations
    7. 9.7 Layout
      1. 9.7.1 Layout Guidelines
      2. 9.7.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Device Registers
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.3.6.2 Output Voltage Setpoint

Together with the selected range, the VSET[7:0] bits in the VSET register control the output voltage setpoint of the device (see Table 8-3).

Table 8-3 Start-Up Voltage Settings
VRANGE[1:0]Output Voltage Setpoint
0b000.4 V + VSET[7:0] × 1.25 mV
0b010.4 V + VSET[7:0] × 2.5 mV
0b10 (default)0.4 V + VSET[7:0] × 5 mV
0b110.4 V + VSET[7:0] × 5 mV

During initialization, the device reads the state of the VSET1 and VSET2 pins and selects the default output voltage according to . Note that the VSET1 and VSET2 pins also selects the I2C target address of the device (see below).

Table 8-4 Default Output Voltage Setpoints for TPS6287BxL

VSET1 pin

VSET2 pin

I2C Device AddressOutput Voltage Setpoint

Short Circuit to GND

Short Circuit to GND

0x45

400 mV

Short Circuit to GND

6.2kΩ to GND

0x44

425 mV

Short Circuit to GND

47kΩ to VIN

0x47

450 mV

Short Circuit to GNDShort Circuit to VIN

0x46

475 mV

6.2kΩ to GNDShort Circuit to GND

0x45

500 mV

6.2kΩ to GND6.2kΩ to GND

0x44

525 mV

6.2kΩ to GND47kΩ to VIN

0x47

550 mV

6.2kΩ to GNDShort Circuit to VIN

0x46

575 mV

47kΩ to VINShort Circuit to GND0x45

600 mV

47kΩ to VIN6.2kΩ to GND0x44

625 mV

47kΩ to VIN47kΩ to VIN0x47

650 mV

47kΩ to VINShort Circuit to VIN0x46

675 mV

Short Circuit to VINShort Circuit to GND0x45

700 mV

Short Circuit to VIN6.2kΩ to GND0x44

725 mV

Short Circuit to VIN47kΩ to VIN0x47

750 mV

Short Circuit to VINShort Circuit to VIN0x46

775 mV

Table 8-5 Default Output Voltage Setpoints for TPS6287BxH

VSET1 pin

VSET2 pin

I2C Device AddressOutput Voltage Setpoint

Short Circuit to GND

Short Circuit to GND

0x45

800 mV

Short Circuit to GND

6.2kΩ to GND

0x44

850 mV

Short Circuit to GND

47kΩ to VIN

0x47

900 mV

Short Circuit to GNDShort Circuit to VIN

0x46

950 mV

6.2kΩ to GNDShort Circuit to GND

0x45

1000 mV

6.2kΩ to GND6.2kΩ to GND

0x44

1050 mV

6.2kΩ to GND47kΩ to VIN

0x47

1100 mV

6.2kΩ to GNDShort Circuit to VIN

0x46

1150 mV

47kΩ to VINShort Circuit to GND0x45

1200 mV

47kΩ to VIN6.2kΩ to GND0x44

1250 mV

47kΩ to VIN47kΩ to VIN0x47

1300 mV

47kΩ to VINShort Circuit to VIN0x46

1350 mV

Short Circuit to VINShort Circuit to GND0x45

1400 mV

Short Circuit to VIN6.2kΩ to GND0x44

1450 mV

Short Circuit to VIN47kΩ to VIN0x47

1500 mV

Short Circuit to VINShort Circuit to VIN0x46

1550 mV

Table 8-6 Default Voltage Setpoints for TPS6287BxV
VSET4=LOWVSET4=HIGH

VSET1 pin

VSET2 pin

VSET3=LOWVSET3=HIGHVSET3=LOWVSET3=HIGH

Short Circuit to GND

Short Circuit to GND

400 mV

425 mV

900 mV

925 mV

Short Circuit to GND

6.2kΩ to GND

450 mV

475 mV

950 mV

975 mV

Short Circuit to GND

47kΩ to VIN

500 mV

525 mV

1000 mV

1025 mV

Short Circuit to GNDShort Circuit to VIN

550 mV

575 mV

1050 mV

1075 mV

6.2kΩ to GNDShort Circuit to GND

600mV

625 mV

1100 mV

1125 mV

6.2kΩ to GND6.2kΩ to GND

650 mV

675 mV

1150 mV

1175 mV
6.2kΩ to GND47kΩ to VIN

700 mV

725 mV

1200 mV

1225 mV

6.2kΩ to GNDShort Circuit to VIN

750 mV

775 mV

1250 mV

1275 mV

47kΩ to VINShort Circuit to GND

800 mV

825 mV

1300 mV

1325 mV

47kΩ to VIN6.2kΩ to GND

850 mV

875 mV

1350 mV

1375 mV

47kΩ to VIN47kΩ to VIN

900 mV

925 mV

1400 mV

1425 mV

47kΩ to VINShort Circuit to VIN

950 mV

975 mV

1450 mV

1475 mV

Short Circuit to VINShort Circuit to GND

1000 mV

1025 mV

1500 mV

1525 mV

Short Circuit to VIN6.2kΩ to GND

1050 mV

1075 mV

1550 mV

1575 mV

Short Circuit to VIN47kΩ to VIN

1100 mV

1125 mV

1600 mV

1625 mV

Short Circuit to VINShort Circuit to VIN

1150 mV

1175 mV

1650 mV

1675 mV

If you program new output voltage setpoint (VOUT[7:0]), output voltage range (VRANGE[1:0]), or soft-start time (SSTIME[1:0]) settings when the device has already begun its soft-start sequence, the device ignores the new values until the soft-start sequence is complete. For example, if you change the value of VSET[7:0] during soft-start, the device first ramps to the value that VSET[7:0] had when the soft-start sequence began and then, when soft-start is complete, ramps up or down to the new value.

If you change VOUT[7:0], VRAMP[1:0], or SSTIME[1:0] while EN is low, the device uses the new values the next time you enable it.

During start-up the output voltage ramps up to the target value set by the VSET1 and VSET2 pins before ramping up or down to any new value programmed to the device over the I2C interface.