ZHCSOR0 August   2021 TPS25868-Q1 , TPS25869-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Switching Characteristics
    8. 8.8 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  Power-Down or Undervoltage Lockout
      2. 10.3.2  Input Overvoltage Protection (OVP) - Continuously Monitored
      3. 10.3.3  Buck Converter
      4. 10.3.4  FREQ/SYNC
      5. 10.3.5  Bootstrap Voltage (BOOT)
      6. 10.3.6  Minimum ON-Time, Minimum OFF-Time
      7. 10.3.7  Internal Compensation
      8. 10.3.8  Selectable Output Voltage (VSET)
      9. 10.3.9  Current Limit and Short Circuit Protection
        1. 10.3.9.1 USB Switch Programmable Current Limit (ILIM)
        2. 10.3.9.2 Interlocking for Two-Level USB Switch Current Limit
        3. 10.3.9.3 Cycle-by-Cycle Buck Current Limit
        4. 10.3.9.4 OUT Current Limit
      10. 10.3.10 Cable Compensation
      11. 10.3.11 Thermal Management with Temperature Sensing (TS) and OTSD
      12. 10.3.12 Thermal Shutdown
      13. 10.3.13 USB Enable On/Off Control (TPS25869-Q1)
      14. 10.3.14 FAULT Indication
      15. 10.3.15 USB Specification Overview
      16. 10.3.16 USB Type-C® Basics
        1. 10.3.16.1 Configuration Channel
        2. 10.3.16.2 Detecting a Connection
      17. 10.3.17 USB Port Operating Modes
        1. 10.3.17.1 USB Type-C® Mode
        2. 10.3.17.2 Dedicated Charging Port (DCP) Mode (TPS25868-Q1 Only)
          1. 10.3.17.2.1 DCP BC1.2 and YD/T 1591-2009
          2. 10.3.17.2.2 DCP Divider-Charging Scheme
          3. 10.3.17.2.3 DCP 1.2-V Charging Scheme
        3. 10.3.17.3 DCP Auto Mode (TPS25868-Q1)
    4. 10.4 Device Functional Modes
      1. 10.4.1 Shutdown Mode
      2. 10.4.2 Active Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Applications
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Output Voltage Setting
        2. 11.2.2.2 Switching Frequency
        3. 11.2.2.3 Inductor Selection
        4. 11.2.2.4 Output Capacitor Selection
        5. 11.2.2.5 Input Capacitor Selection
        6. 11.2.2.6 Bootstrap Capacitor Selection
        7. 11.2.2.7 Undervoltage Lockout Set-Point
        8. 11.2.2.8 Cable Compensation Set-Point
        9. 11.2.2.9 FAULT Resistor Selection
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
    3. 13.3 Ground Plane and Thermal Considerations
  14. 14Device and Documentation Support
    1. 14.1 接收文档更新通知
    2. 14.2 支持资源
    3. 14.3 Trademarks
    4. 14.4 Electrostatic Discharge Caution
    5. 14.5 术语表
  15. 15Mechanical, Packaging, and Orderable Information

8.6 Timing Requirements

Over the recommended operating junction temperature range of -40 °C to 150 °C (unless otherwise noted)
MINNOMMAXUNIT
FAULT DUE TO BUS OC AND THERMAL SD
tDEGLA_FAULTAsserting deglitch time(Thermal SD Fault assertion is instantaneous, not subject to this timing)2.944.15.42ms
tDEGLD_FAULTDe-asserting deglitch time11.0916.3823.03ms
BUS DISCHARGE
tDEGA_BUS_DCHGDischarge asserting deglitch5.612.321.2ms
tW_BUS_DCHGVBUS discharge time after sink termination removed from CC linesVBUS = 1 V, time ISNK_OUT > 1 mA after sink termination removed from CC lines170260360ms
POWER SWITCH TIMING
tIOS_HI_DEGDeglitch time for USB power switch current limit enableUSB port enter overcurrent (per ILIM setting)1.2282.0482.867ms
tIOS_HI_RSTMFi OCP reset timing9.61622.4ms
tr_USBPA_BUS, PB_BUS voltage rise timeCL = 1 µF, RL = 100 Ω (measured from 10% to 90% of final value)1.67ms
tf_USBPA_BUS, PB_BUS voltage fall timeCL = 1 µF, RL = 100 Ω (measured from 90% to 10% of final value)0.49ms
ton_USBPA_BUS, PB_BUS voltage turnon-timeCL = 1 µF, RL = 100 Ω2.59ms
toff_USBPA_BUS, PB_BUS voltage turnoff-timeCL = 1 µF, RL = 100 Ω2.07ms
tIOS_USBPA_BUS, PB_BUS short-circuit response timeCL = 1 µF, RL = 1 Ω1us
tr_OUTOUT voltage rise timeCL = 1 µF, RL = 100 Ω (measured from 10% to 90% of final value)0.120.20.28ms
tf_OUTOUT voltage fall timeCL = 1 µF, RL = 100 Ω (measured from 90% to 10% of final value)0.160.220.28ms
ton_OUTOUT voltage turnon-timeCL = 1 µF, RL = 100 Ω0.61.11.65ms
toff_OUTOUT voltage turnoff-timeCL = 1 µF, RL = 100 Ω0.220.380.55ms
tIOS_OUTOUT short-circuit response timeCL = 1 µF, RL = 1 Ω1.44us
tIOS_VCONN CC-VCONN short circuit response timeCL = 1 µF, RL = 1 Ω13.5µs
tr_VCONNVCONN output voltage rise timeCL = 1 µF, RL = 100 Ω (measured from 10% to 90% of final value); 5.1 KΩ on CC1 and 1 KΩ on CC20.20.280.35ms
tf_VCONNVCONN output voltage fall timeCL = 1 µF, RL = 100 Ω (measured from 90% to 10% of final value); 5.1 KΩ on CC1 and 1KΩ on CC20.180.230.28ms
ton_VCONNVCONN output voltage turnon timeCL = 1 µF, RL = 100 Ω; 5.1KΩ on CC1 and 1KΩ on CC20.71.21.7ms
toff_VCONNVCONN output voltage turnoff timeCL = 1 µF, RL = 100 Ω; 5.1 KΩ on CC1 and 1 KΩ on CC20.370.440.51ms
HICCUP MODE
THICP_ONOUT, PA_BUS, PB_BUS output hiccup mode ON timeOC, VOUT, VPA_BUS, VPB_BUS drop 10%2.944.15.42ms
THICP_OFFOUT, PA_BUS, PB_BUS output hiccup mode OFF timeOC, OUT, PA_BUS, PB_BUS connect to GND367524715ms
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