SLVSDG8B April 2016  – June 2017 TPS25740 , TPS25740A

PRODUCTION DATA. 

  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 USB Type-C CC Logic (CC1, CC2)
      2. 8.3.2 USB PD BMC Transmission (CC1, CC2, VTX)
      3. 8.3.3 USB PD BMC Reception (CC1, CC2)
      4. 8.3.4 Discharging (DSCG, VPWR)
        1. 8.3.4.1Discharging after a Fault (VPWR)
      5. 8.3.5 Configuring Voltage Capabilities (HIPWR, EN9V, EN12V)
      6. 8.3.6 Configuring Power Capabilities (PSEL, PCTRL, HIPWR)
      7. 8.3.7 Gate Driver (GDNG, GDNS)
      8. 8.3.8 Fault Monitoring and Protection
        1. 8.3.8.1Over/Under Voltage (VBUS)
        2. 8.3.8.2Over-Current Protection (ISNS, VBUS)
        3. 8.3.8.3System Fault Input (GD, VPWR)
      9. 8.3.9 Voltage Control (CTL1, CTL2)
      10. 8.3.10Sink Attachment Indicator (UFP, DVDD)
      11. 8.3.11Power Supplies (VAUX, VDD, VPWR, DVDD)
      12. 8.3.12Grounds (AGND, GND)
      13. 8.3.13Output 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. 9.1.2 Use of GD Internal Clamp
      3. 9.1.3Resistor Divider on GD for Programmable Start Up
      4. 9.1.4Selection of the CTL1 and CTL2 Resistors (R(FBL1) and R(FBL2))
      5. 9.1.5Voltage Transition Requirements
      6. 9.1.6VBUS Slew Control using GDNG C(SLEW)
      7. 9.1.7Tuning OCP Using RF and CF
    2. 9.2Typical Application , A/C Power Source (Wall Adapter)
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. 9.2.2.1Power Pin Bypass Capacitors
        2. 9.2.2.2Non-Configurable Components
        3. 9.2.2.3Configurable Components
      3. 9.2.3Application Curves
      4. 9.2.4Typical Application, D/C Power Source
        1. 9.2.4.1Design Requirements
        2. 9.2.4.2Detailed Design Procedure
          1. 9.2.4.2.1Power Pin Bypass Capacitors
          2. 9.2.4.2.2Non-Configurable Components
          3. 9.2.4.2.3Configurable Components
        3. 9.2.4.3Application 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 Power Managed 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. 12.2Related Links
    3. 12.3Receiving Notification of Documentation Updates
    4. 12.4Community Resources
    5. 12.5Trademarks
    6. 12.6Electrostatic Discharge Caution
    7. 12.7Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Features

  • USB Power Delivery (PD) 2.0 Certified Provider,
    USB Type-C™ Rev. 1.2 Compliant Source
  • Pin-Selectable Voltage Advertisement
    • 5 V, 12 V, and/or 20 V (TPS25740)
    • 5 V, 9 V, and/or 15 V (TPS25740A)
  • Pin-Selectable Peak Power Settings
    • 12 options 15 W – 100W (TPS25740)
    • 11 options 15 W – 81W (TPS25740A)
  • 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
    • 2-pin External Power Supply Control
    • Wide VIN Supply (4.65 V – 25 V)
  • Below 10 µA Quiescent Current when Unattached
  • Port Attachment Indicator
  • Port Power Management
  • Built-In 1.8 V at 35 mA Supply Output

Applications

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

Description

The TPS25740, TPS25740A implements a source that is compliant to USB Power Delivery 2.0 version 1.2 and Type-C revision 1.2. 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 up to three different voltages using USB Power Delivery. Four input pins (PSEL, HIPWR, PCTRL, and (EN12V or EN9V) are used to configure the voltages and currents advertised. The device uses the CTL1 and CTL2 pins to select one of three voltages 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 TPS25740, TPS25740A 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 (UFP) 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)

PART NUMBERPACKAGEBODY SIZE (NOM)
TPS25740QFN (24)4.00 mm x 4.00 mm
TPS25740A
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TPS25740 TPS25740A fp_schematic_slvsdg8.gif