JAJSOL2 August   2024 TPS55287

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 I2C Timing Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  VCC Power Supply
      2. 6.3.2  EXTVCC Power Supply
      3. 6.3.3  Operation Mode Setting
      4. 6.3.4  Input Undervoltage Lockout
      5. 6.3.5  Enable and Programmable UVLO
      6. 6.3.6  Soft Start
      7. 6.3.7  Shutdown and Load Discharge
      8. 6.3.8  Switching Frequency
      9. 6.3.9  Switching Frequency Dithering
      10. 6.3.10 Inductor Current Limit
      11. 6.3.11 Internal Charge Path
      12. 6.3.12 Output Voltage Setting
      13. 6.3.13 Output Current Monitoring and Cable Voltage Droop Compensation
      14. 6.3.14 Output Current Limit
      15. 6.3.15 Overvoltage Protection
      16. 6.3.16 Output Short Circuit Protection
      17. 6.3.17 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 PWM Mode
      2. 6.4.2 Power Save Mode
    5. 6.5 Programming
      1. 6.5.1 Data Validity
      2. 6.5.2 START and STOP Conditions
      3. 6.5.3 Byte Format
      4. 6.5.4 Acknowledge (ACK) and Not Acknowledge (NACK)
      5. 6.5.5 Target Address and Data Direction Bit
      6. 6.5.6 Single Read and Write
      7. 6.5.7 Multiread and Multiwrite
    6. 6.6 Register Maps
      1. 6.6.1 REF Register (Address = 0h, 1h)
      2. 6.6.2 IOUT_LIMIT Register (Address = 2h) [reset = 11100100h]
      3. 6.6.3 VOUT_SR Register (Address = 3h) [reset = 00000001h]
      4. 6.6.4 VOUT_FS Register (Address = 4h) [reset = 00000011h]
      5. 6.6.5 CDC Register (Address = 5h) [reset = 11100000h]
      6. 6.6.6 MODE Register (Address = 6h) [reset = 00100000h]
      7. 6.6.7 STATUS Register (Address = 7h) [reset = 00000011h]
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Switching Frequency
        2. 7.2.2.2 Output Voltage Setting
        3. 7.2.2.3 Inductor Selection
        4. 7.2.2.4 Input Capacitor
        5. 7.2.2.5 Output Capacitor
        6. 7.2.2.6 Output Current Limit
        7. 7.2.2.7 Loop Stability
      3. 7.2.3 Application Curves
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 サード・パーティ製品に関する免責事項
    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. 11Revision History
  13. 12Mechanical, 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

5.7 Typical Characteristics

VIN = 12 V, TA = 25°C, unless otherwise noted
VIN = 12 V, TA = 25°C, unless otherwise notedTPS55287 Efficiency vs Output Current, VOUT = 5 V, fSW = 400 kHz, FPWMFigure 5-1 Efficiency vs Output Current,
VOUT = 5 V, fSW = 400 kHz, FPWM. VIN = 12 V, TA = 25°C, unless otherwise noted
TPS55287 Efficiency vs Output Current, VOUT = 9 V, fSW = 400 kHz, FPWMFigure 5-3 Efficiency vs Output Current,
VOUT = 9 V, fSW = 400 kHz, FPWM
TPS55287 Efficiency vs Output Current, VOUT = 12 V, fSW = 400 kHz, FPWMFigure 5-5 Efficiency vs Output Current,
VOUT = 12 V, fSW = 400 kHz, FPWM
TPS55287 Efficiency vs Output Current, VOUT = 15 V, fSW = 400 kHz, FPWMFigure 5-7 Efficiency vs Output Current,
VOUT = 15 V, fSW = 400 kHz, FPWM
TPS55287 Efficiency vs Output Current, VOUT = 20 V, fSW = 400 kHz, FPWMFigure 5-9 Efficiency vs Output Current,
VOUT = 20 V, fSW = 400 kHz, FPWM
TPS55287 Efficiency vs Output Current, VOUT = 9 V, fSW = 2 MHz, FPWMFigure 5-11 Efficiency vs Output Current,
VOUT = 9 V, fSW = 2 MHz, FPWM
TPS55287 Efficiency vs Output Current, VOUT = 12 V, fSW = 2 MHz, FPWMFigure 5-13 Efficiency vs Output Current,
VOUT = 12 V, fSW = 2 MHz, FPWM
TPS55287 Efficiency vs Input Voltage, VOUT = 12 V, IOUT = 2A, FPWMFigure 5-15 Efficiency vs Input Voltage,
VOUT = 12 V, IOUT = 2A, FPWM
TPS55287 Reference Voltage vs Temperature (VREF = 0.282V)Figure 5-17 Reference Voltage vs Temperature (VREF = 0.282V)
TPS55287 Reference Voltage vs Temperature (VREF = 0.846V)Figure 5-19 Reference Voltage vs Temperature (VREF = 0.846V)
TPS55287 Quiescent Current vs TemperatureFigure 5-21 Quiescent Current vs Temperature
TPS55287 ENABLE/UVLO Rising Threshold vs TemperatureFigure 5-23 ENABLE/UVLO Rising Threshold vs Temperature
TPS55287 CDC Voltage vs Output Current with RSENSE = 10mΩFigure 5-25 CDC Voltage vs Output Current with RSENSE = 10mΩ
TPS55287 Efficiency vs Output Current, VOUT = 5 V, fSW = 400 kHz, PFMFigure 5-2 Efficiency vs Output Current,
VOUT = 5 V, fSW = 400 kHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 9 V, fSW = 400 kHz, PFMFigure 5-4 Efficiency vs Output Current,
VOUT = 9 V, fSW = 400 kHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 12 V, fSW = 400 kHz, PFMFigure 5-6 Efficiency vs Output Current,
VOUT = 12 V, fSW = 400 kHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 15 V, fSW = 400 kHz, PFMFigure 5-8 Efficiency vs Output Current,
VOUT = 15 V, fSW = 400 kHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 20 V, fSW = 400 kHz, PFMFigure 5-10 Efficiency vs Output Current,
VOUT = 20 V, fSW = 400 kHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 9 V, fSW = 2 MHz, PFMFigure 5-12 Efficiency vs Output Current,
VOUT = 9 V, fSW = 2 MHz, PFM
TPS55287 Efficiency vs Output Current, VOUT = 12 V, fSW = 2 MHz, PFMFigure 5-14 Efficiency vs Output Current,
VOUT = 12 V, fSW = 2 MHz, PFM
TPS55287 Switching Frequency vs Setting ResistanceFigure 5-16 Switching Frequency vs Setting Resistance
TPS55287 Reference Voltage vs Temperature (VREF = 0.508V)Figure 5-18 Reference Voltage vs Temperature (VREF = 0.508V)
TPS55287 Reference Voltage vs Temperature (VREF = 1.129V)Figure 5-20 Reference Voltage vs Temperature (VREF = 1.129V)
TPS55287 Shutdown Current vs TemperatureFigure 5-22 Shutdown Current vs Temperature
TPS55287 Switching Frequency vs TemperatureFigure 5-24 Switching Frequency vs Temperature