SLVSDR6A June 2017  – September 2017 TPS25740B


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1Absolute Maximum Ratings
    2. 7.2ESD Ratings
    3. 7.3Recommended Operating Conditions
    4. 7.4Thermal Information
    5. 7.5Electrical Characteristics
    6. 7.6Timing Requirements
    7. 7.7Switching Characteristics
    8. 7.8Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
      1. 8.1.1VBUS Capacitance
      2. 8.1.2USB Data Communications
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1 ENSRC
      2. 8.3.2 USB Type-C CC Logic (CC1, CC2)
      3. 8.3.3 USB PD BMC Transmission (CC1, CC2, VTX)
      4. 8.3.4 USB PD BMC Reception (CC1, CC2)
      5. 8.3.5 Discharging (DSCG, VPWR)
        1. after a Fault (VPWR)
      6. 8.3.6 Configuring Voltage Capabilities (HIPWR)
      7. 8.3.7 Configuring Power Capabilities (PSEL, PCTRL, HIPWR)
      8. 8.3.8 Gate Driver (GDNG, GDNS)
      9. 8.3.9 Fault Monitoring and Protection
        1. Voltage (VBUS)
        2. Protection (ISNS, VBUS)
        3. Fault Input (GD, VPWR)
      10. 8.3.10Voltage Control (CTL1, CTL2,CTL3)
      11. 8.3.11Sink Attachment Indicator (DVDD)
      12. 8.3.12Power Supplies (VAUX, VDD, VPWR, DVDD)
      13. 8.3.13Grounds (AGND, GND)
      14. 8.3.14Output Power Supply (DVDD)
    4. 8.4Device Functional Modes
      1. 8.4.1Sleep Mode
      2. 8.4.2Checking VBUS at Start Up
  9. Application and Implementation
    1. 9.1Application Information
      1. 9.1.1System-Level ESD Protection
      2. 9.1.2Using ENSRC to Enable the Power Supply upon Sink Attachment
      3. 9.1.3 Use of GD Internal Clamp
      4. 9.1.4Resistor Divider on GD for Programmable Start Up
      5. 9.1.5Selection of the CTL1, CTL2, and CTL3 Resistors (R(FBL1), R(FBL2), and R(FBL3))
      6. 9.1.6Voltage Transition Requirements
      7. 9.1.7VBUS Slew Control using GDNG C(SLEW)
      8. 9.1.8Tuning OCP using RF and CF
    2. 9.2Typical Applications
      1. 9.2.1Typical Application, A/C Power Source (Wall Adapter)
        1. Requirements
        2. Design Procedure
          1. Pin Bypass Capacitors
          2. Components
          3. Components
        3. Curves
      2. 9.2.2Typical Application, D/C Power Source
        1. Requirements
        2. Design Procedure
          1. Pin Bypass Capacitors
          2. Components
          3. Components
        3. Curves
    3. 9.3System Examples
      1. 9.3.1D/C Power Source (Power Hub)
      2. 9.3.2A/C Power Source (Wall Adapter)
      3. 9.3.3Dual-Port A/C Power Source (Wall Adaptor)
      4. 9.3.4D/C Power Source (Power Hub with 3.3 V Rail)
  10. 10Power Supply Recommendations
    1. 10.1VDD
    2. 10.2VPWR
  11. 11Layout
    1. 11.1Port Current Kelvin Sensing
    2. 11.2Layout Guidelines
      1. 11.2.1Power Pin Bypass Capacitors
      2. 11.2.2Supporting Components
    3. 11.3Layout Example
  12. 12Device and Documentation Support
    1. 12.1Documentation Support
    2. 12.2Receiving Notification of Documentation Updates
    3. 12.3Community Resources
    4. 12.4Trademarks
    5. 12.5Electrostatic Discharge Caution
    6. 12.6Glossary
  13. 13Mechanical, Packaging, and Orderable Information


  • USB PD 2.0 Certified (TID# 1030004) and USB PD 3.0 Compliant Provider,
  • Pin-Selectable Voltage Advertisement
    • 5 V, 9 V, 12 V, and 15 V
    • 5 V, 9 V, 15 V, and 20 V
  • Pin-Selectable Peak Power Settings
    • 8 Options 18 W – 100W
  • High Voltage and Safety Integration
    • Overvoltage, Overcurrent, Overtemperature Protection and VBUS Discharge
    • IEC 61000-4-2 Protection on CC1 and CC2
    • Input Pin for Fast Shutdown Under Fault
    • Control of External N-ch MOSFET
    • 3-Pin External Power Supply Control
    • Wide VIN Supply (4.65 V – 25 V)
  • Below 10 µA Quiescent Current When Unattached
  • Port Attachment Indicator
  • Self-Directed Port Power Management for Dual-Port Applications


  • USB-PD Adaptor (data-less)
  • Dedicated Charging Port (data-less)
  • Power Hub (data-less)
  • Power Bank
  • Cigarette Lighter Adaptor (CLA)


Without any firmware configuration, the TPS25740B implements a source that is certified for USB Power Delivery 2.0 version 1.2 and Type-C™ revision 1.2 designed to minimize time to market. The device is designed to work seamlessly with any USB PD 3.0 compliant sink. It monitors the CC pin to detect when a USB Type-C sink is attached, then it enables a N-ch MOSFET gate driver to turn on VBUS. The device then offers four different voltages using USB Power Delivery. Three input pins (PSEL, HIPWR, and PCTRL) are used to configure the voltages and currents advertised. The device uses the CTL1, CTL2, and CTL3 pins to select the voltage from the power supply based on the voltage requested by the attached sink. The device automatically handles discharging the VBUS output per USB PD requirements.

The TPS25740B typically draws 8.5 µA (or 5.8 µA if VDD = 3.3 V) when no device is attached. Additional system power saving is achievable by using the Port Attachment Indicator (DVDD) output to disable the power source when no device is attached.

Protection features include overvoltage protection, overcurrent protection, over-temperature protection, IEC for CC pins, and system override to disable the gate driver (GD).

Device Information(1)

TPS25740BVQFN (24)4.00 mm x 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TPS25740B fp_schematic_slvsdr6.gif