JAJSK02 October   2020 TPS23731

PRODUCTION DATA  

  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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: DC-DC Controller Section
    6. 7.6 Electrical Characteristics PoE
    7.     14
    8. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  CLS Classification
      2. 8.3.2  DEN Detection and Enable
      3. 8.3.3  APD Auxiliary Power Detect
      4. 8.3.4  Internal Pass MOSFET
      5. 8.3.5  T2P and APDO Indicators
      6. 8.3.6  DC-DC Controller Features
        1. 8.3.6.1 VCC, VB, VBG and Advanced PWM Startup
        2.       27
        3. 8.3.6.2 CS, Current Slope Compensation and blanking
        4. 8.3.6.3 COMP, FB, EA_DIS, CP, PSRS and Opto-less Feedback
        5. 8.3.6.4 FRS Frequency Setting and Synchronization
        6. 8.3.6.5 DTHR and Frequency Dithering for Spread Spectrum Applications
        7. 8.3.6.6 SST and Soft-Start of the Switcher
        8. 8.3.6.7 SST, I_STP, LINEUV and Soft-Stop of the Switcher
      7. 8.3.7  Switching FET Driver - GATE
      8. 8.3.8  EMPS and Automatic MPS
      9. 8.3.9  VDD Supply Voltage
      10. 8.3.10 RTN, AGND, GND
      11. 8.3.11 VSS
      12. 8.3.12 Exposed Thermal pads - PAD_G and PAD_S
    4. 8.4 Device Functional Modes
      1. 8.4.1  PoE Overview
      2. 8.4.2  Threshold Voltages
      3. 8.4.3  PoE Start-Up Sequence
      4. 8.4.4  Detection
      5. 8.4.5  Hardware Classification
      6. 8.4.6  Maintain Power Signature (MPS)
      7. 8.4.7  Advanced Start-Up and Converter Operation
      8. 8.4.8  Line Undervoltage Protection and Converter Operation
      9. 8.4.9  PD Self-Protection
      10. 8.4.10 Thermal Shutdown - DC-DC Controller
      11. 8.4.11 Adapter ORing
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Detailed Design Procedure
          1. 9.2.1.1.1  Input Bridges and Schottky Diodes
          2. 9.2.1.1.2  Input TVS Protection
          3. 9.2.1.1.3  Input Bypass Capacitor
          4. 9.2.1.1.4  Detection Resistor, RDEN
          5. 9.2.1.1.5  Classification Resistor, RCLS.
          6. 9.2.1.1.6  APD Pin Divider Network, RAPD1, RAPD2
          7. 9.2.1.1.7  Setting Frequency (RFRS) and Synchronization
          8. 9.2.1.1.8  Bias Supply Requirements and CVCC
          9. 9.2.1.1.9  APDO, T2P Interface
          10. 9.2.1.1.10 Output Voltage Feedback Divider, RAUX, R1,R2
          11. 9.2.1.1.11 Frequency Dithering for Conducted Emissions Control
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 EMI Containment
    4. 11.4 Thermal Considerations and OTSD
    5. 11.5 ESD
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 サポート・リソース
    3. 12.3 Trademarks
    4. 12.4 静電気放電に関する注意事項
    5. 12.5 用語集
  13. 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

Typical Characteristics

GUID-20200916-CA0I-B2TW-LFPG-DGHMHNTGMLQF-low.gifFigure 7-1 Detection Bias Current vs Voltage
GUID-20200916-CA0I-MMKJ-BXZ3-9VGQ0WCB56CN-low.gifFigure 7-3 Pass FET Resistance vs Temperature
GUID-20200916-CA0I-WDHD-JTPB-BMPLT9BC5XPX-low.gifFigure 7-5 Converter Startup Current vs VDD Input Voltage
GUID-20200916-CA0I-31SH-TBNL-VTFP4H8J3JZ1-low.gifFigure 7-7 Converter Startup Voltage vs Current
GUID-20200916-CA0I-LG1Z-5LMQ-4D5KVHSMPCSZ-low.gifFigure 7-9 Controller Bias Current vs Voltage
GUID-20200916-CA0I-MJMM-VLQM-GBVVBMLLJTXC-low.gifFigure 7-11 Switching Frequency vs Programmed Resistance
GUID-20200916-CA0I-XF0F-BDXT-QBVCJ3N09BXJ-low.gifFigure 7-13 Feedback Regulation Voltage vs Temperature
GUID-20200916-CA0I-1FXK-NGNP-KWFWL3STKT3V-low.gifFigure 7-15 Blanking Period vs Temperature
GUID-20200916-CA0I-CMTN-TBLK-H357ZT2N2SS9-low.gifFigure 7-17 Error Amplifier Sink Current
GUID-20200916-CA0I-RDVC-LKTC-VXDJBX5SK87H-low.gifFigure 7-19 Error Amplifier Phase vs Frequency
GUID-20200916-CA0I-JF2G-NXT8-ZQSC7K5NDMHZ-low.gifFigure 7-2 PoE Current Limit vs Temperature
GUID-20200916-CA0I-41XQ-HMBN-XZSKSNSPMW9G-low.gifFigure 7-4 VDD Supply Current vs Voltage
GUID-20200916-CA0I-DH3L-T7LD-B78JKPWQSG2W-low.gifFigure 7-6 Converter Startup Current vs VDD Input Voltage
GUID-20200916-CA0I-XQLF-L3XD-VN6SZGVZL3TP-low.gifFigure 7-8 Controller SST Soft Stop Sink Current vs Programmed Resistance
GUID-20200916-CA0I-99TH-3J4C-9Q57NWQ6WBJJ-low.gifFigure 7-10 Switching Frequency vs Temperature
GUID-20200916-CA0I-DZ3S-HBWD-PS4NZDMVMKPK-low.gifFigure 7-12 Maximum Duty Cycle vs Temperature
GUID-20200916-CA0I-8MFB-0ZFX-HXRHQMMV7HMP-low.gifFigure 7-14 Current Slope Compensation Current vs Temperature
GUID-20200916-CA0I-2GSX-N3BP-3W6QHQSZHLLB-low.gifFigure 7-16 Error Amplifier Source Current
GUID-20200916-CA0I-0PTJ-T1Q7-GQTLFTRMQVRX-low.gifFigure 7-18 Error Amplifier Gain vs Frequency