JAJSRT9 October   2023 TPS25730

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
      1. 6.1.1 TPS25730D and TPS25730S - Absolute Maximum Ratings
      2. 6.1.2 TPS25730D - Absolute Maximum Ratings
      3. 6.1.3 TPS25730S - Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
      1. 6.3.1 TPS25730D - Recommended Operating Conditions
      2. 6.3.2 TPS25730S - Recommended Operating Conditions
    4. 6.4  Recommended Capacitance
    5. 6.5  Thermal Information
      1. 6.5.1 TPS25730D - Thermal Information
      2. 6.5.2 TPS25730S - Thermal Information
    6. 6.6  Power Supply Characteristics
    7. 6.7  Power Consumption
    8. 6.8  PPHV Power Switch Characteristics - TPS25730D
    9. 6.9  PP_EXT Power Switch Characteristics - TPS25730S
    10. 6.10 Power Path Supervisory
    11. 6.11 CC Cable Detection Parameters
    12. 6.12 CC PHY Parameters
    13. 6.13 Thermal Shutdown Characteristics
    14. 6.14 ADC Characteristics
    15. 6.15 Input/Output (I/O) Characteristics
    16. 6.16 I2C Requirements and Characteristics
    17. 6.17 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  USB-PD Physical Layer
        1. 8.3.1.1 USB-PD Encoding and Signaling
        2. 8.3.1.2 USB-PD Bi-Phase Marked Coding
        3. 8.3.1.3 USB-PD BMC Transmitter
        4. 8.3.1.4 USB-PD BMC Receiver
        5. 8.3.1.5 Squelch Receiver
      2. 8.3.2  Power Management
        1. 8.3.2.1 Power-On And Supervisory Functions
        2. 8.3.2.2 VBUS LDO
      3. 8.3.3  Power Paths
        1. 8.3.3.1 TPS25730D Internal Sink Path
        2. 8.3.3.2 TPS25730S - External Sink Path Control PP_EXT
      4. 8.3.4  Cable Plug and Orientation Detection
      5. 8.3.5  Overvoltage Protection (CC1, CC2)
      6. 8.3.6  Default Behavior Configuration (ADCIN1, ADCIN2)
      7. 8.3.7  ADC
      8. 8.3.8  Digital Interfaces
      9. 8.3.9  Digital Core
      10. 8.3.10 I2C Interface
        1. 8.3.10.1 I2C Interface Description
          1. 8.3.10.1.1 I2C Clock Stretching
          2. 8.3.10.1.2 Unique Address Interface
          3. 8.3.10.1.3 Pin Strapping to Configure Default Behavior
      11. 8.3.11 Minimum Voltage Configuration
      12. 8.3.12 Maximum Voltage Configuration
      13. 8.3.13 Sink Current Configuration
      14. 8.3.14 Autonegotiate Sink Minimum Power
      15. 8.3.15 Extended Sink Capabilities Power Delivery Power
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power States
    5. 8.5 Schottky for Current Surge Protection
    6. 8.6 Thermal Shutdown
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Supported Sink Power Configurations
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 3.3-V Power
        1. 9.3.1.1 VIN_3V3 Input Switch
      2. 9.3.2 1.5-V Power
      3. 9.3.3 Recommended Supply Load Capacitance
    4. 9.4 Layout
      1. 9.4.1 TPS25730D - Layout
        1. 9.4.1.1 Layout Guidelines
          1. 9.4.1.1.1 Top Placement and Bottom Component Placement and Layout
        2. 9.4.1.2 Layout Example
        3. 9.4.1.3 Component Placement
        4. 9.4.1.4 Routing VBUS, VIN_3V3, LDO_3V3, LDO_1V5
        5. 9.4.1.5 Routing CC and GPIO
      2. 9.4.2 TPS25730S - Layout
        1. 9.4.2.1 Layout Guidelines
          1. 9.4.2.1.1 Top Placement and Bottom Component Placement and Layout
        2. 9.4.2.2 Layout Example
        3. 9.4.2.3 Component Placement
        4. 9.4.2.4 Routing VBUS, PPHV, VIN_3V3, LDO_3V3, LDO_1V5
        5. 9.4.2.5 Routing CC and GPIO
  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 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 ドキュメントの更新通知を受け取る方法
    4. 10.4 サポート・リソース
    5. 10.5 Trademarks
    6. 10.6 静電気放電に関する注意事項
    7. 10.7 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

8.3.3.2 TPS25730S - External Sink Path Control PP_EXT

The TPS25730S has two N-ch gate drivers designed to control a sinking path from VBUS to VSYS. The charge pump for these gate drivers requires VBUS to be above VVBUS_UVLO. When a sink path is enabled, the circuitry includes a slew rate control loop to ensure that external switches do not turn on too quickly (SS). The TPS25730S senses the VSYS and VBUS voltages to control the gate voltages to enable or disable the external FETs.

The sink-path control includes overvoltage protection (OVP), and reverse current protection (RCP). Adding resistance in series with a GATE pin of the TPS25730S and the gate pin of the N-ch MOSFET slows down the turnoff time when OVP or RCP occurs. Any such resistance must be minimized, and not allowed to exceed 3 Ω.

GUID-B8FD4C74-4962-4C15-88A8-BD24BF742244-low.gif Figure 8-13 PP_EXT External Sink Path Control
Figure 8-14 shows the GATE_VSYS gate driver in more detail.
GUID-2D2AB803-A5C2-4BF8-B580-F880E650F14C-low.gif Figure 8-14 Details of the VSYS Gate Driver