ZHCSLZ4D May   2020  – September 2021 TPS25850-Q1 , TPS25851-Q1 , TPS25852-Q1

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Device Comparison Table
  7. Pin Configuration and Functions
  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. 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 (TPS25852-Q1)
      14. 10.3.14 FAULT Indication (TPS25851-Q1 and TPS25852-Q1)
      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
        3. 10.3.16.3 Plug Polarity Detection (TPS25851-Q1)
      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 (TPS25850-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 (TPS25850-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
      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

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机械数据 (封装 | 引脚)
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订购信息

Typical Characteristics

Unless otherwise specified the following conditions apply: VIN = 13.5 V, fSW = 2.1 MHz, L = 0.68 µH, CSENSE = 66 µF, CPA_BUS = 1 µF, CPB_BUS = 1 µF, TA = 25 °C.

GUID-20200930-CA0I-ZSDZ-N4KX-6LVVZBRG3N4V-low.gif
VEN/EULVO = 0 V PA_CC1 = Rd PB_CC1 = Rd
Figure 8-1 Shutdown Quiescent Current
GUID-20200930-CA0I-J74S-BDPW-JCXQJPVS2PSD-low.gifFigure 8-3 Precision Device Enable Threshold
GUID-20200930-CA0I-HGQQ-2K3R-H41WB5VSWJP9-low.gif
VSET = GND
Figure 8-5 VSENSE Voltage vs Junction Temperature
GUID-20200930-CA0I-QF8H-6RZN-CTP182FQFK6C-low.gif
VEN/EULVO = VSENSE PA_CC1= Rd PB_CC1= Rd
Figure 8-7 DCDC UVLO Threshold
GUID-20200930-CA0I-MSNB-DWMG-QBKR1K9QMNPX-low.gifFigure 8-9 Low-side Current Limit vs Input Voltage
GUID-20201001-CA0I-FWXB-WSLC-N1VPZDBC43FZ-low.gif
IPA_BUS = 3 A IPB_BUS = 3 A
Figure 8-11 Low-side MOSFET on Resistance vs Junction Temperature
GUID-20201001-CA0I-W6QN-P2N1-HNCXFX1HPBQM-low.gif
RILIM = 9.53 kΩ
Figure 8-13 USB Power Switch Current Limit vs Junction Temperature
GUID-20201001-CA0I-82TX-0HNL-CNSCJ9TRWQWX-low.gifFigure 8-15 OUT Power Switch Current Limit vs Junction Temperature
GUID-20201001-CA0I-Z0L7-QFSB-FMKGWWGSB8H6-low.gif
IPA/B_BUS = 2.4 A VSET = GND
Figure 8-17 Cable Compensation Voltage vs Junction Temperature
GUID-20201001-CA0I-ZXQK-6GN3-CPMQJHDWFFJK-low.gifFigure 8-19 OUT Power Switch On Resistance vs Junction Temperature
GUID-20201005-CA0I-ZCHL-ZMKH-PXWHGJGLL8KR-low.gif
RFREQ = 49.9 kΩ
Figure 8-21 Switching Frequency vs Junction Temperature
GUID-20201001-CA0I-LRRH-Z7RV-BWJFSWFMCNRJ-low.gifFigure 8-23 CC Sourcing Current vs Junction Temperature
GUID-20201001-CA0I-MKMH-S2D6-XKKNNZFGNSC8-low.gifFigure 8-25 TS Temperature Hot Threshold vs Junction Temperature
GUID-20200930-CA0I-G1NV-LXSK-WRX58QNPWPJX-low.gif
VEN/UVLO = VSENSE PA_CC1/2 = OPEN PB_CC1/2 = OPEN
Figure 8-2 Standby Quiescent Current
GUID-20200930-CA0I-8ZDX-WF4J-GHJ6HLBBTXMD-low.gifFigure 8-4 Precision USB PA/PB Enable Threshold
GUID-20200930-CA0I-G7HV-XXDM-GJQL15LK9X1L-low.gif
RVSET = 80.6 kΩ
Figure 8-6 VSENSE Voltage vs Junction Temperature
GUID-20200930-CA0I-XBZW-NMXD-KFQN0MQGZB0F-low.gifFigure 8-8 High-side Current Limit vs Input Voltage
GUID-20201005-CA0I-FG3Z-RJ0M-TBWR9N23GGX6-low.gif
IPA_BUS = 3 A IPB_BUS = 3 A
Figure 8-10 High-side MOSFET on Resistance vs Junction Temperature
GUID-20201001-CA0I-VVSN-XNBZ-G0CM0BGVT8FH-low.gif
ILIM = GND
Figure 8-12 USB Power Switch Current Limit vs Junction Temperature
GUID-20201001-CA0I-V9JR-7F7J-8GTCKHC5ZT5C-low.gif
RILIM = 15.4 kΩ
Figure 8-14 USB Power Switch Current Limit vs Junction Temperature
GUID-20201001-CA0I-VNK1-XQGH-8G42H02BN3FD-low.gifFigure 8-16 VCONN Power Switch Current Limit vs Junction Temperature
GUID-20201005-CA0I-SV4X-F6JN-HNLGVPTMT0Z0-low.gifFigure 8-18 USB Power Switch On Resistance vs Junction Temperature
GUID-20201001-CA0I-JJC5-4FKB-WLLBWDZ8WWNM-low.gifFigure 8-20 VCONN Power Switch On Resistance vs Junction Temperature
GUID-20201001-CA0I-FS1C-G4VG-ZJW8GSQQQGGS-low.gif
RFREQ = 8.45 kΩ
Figure 8-22 Switching Frequency vs Junction Temperature
GUID-20201001-CA0I-GZ9H-H6TJ-RTPRW5S5KZN8-low.gifFigure 8-24 TS Temperature Wam Threshold vs Junction Temperature
GUID-20201001-CA0I-JTRF-LBTL-QXFM3CND0HKK-low.gifFigure 8-26 SENSE Voltage in Temperature Hot vs Junction Temperature