ZHCSHC3B january   2018  – june 2023 TPS61280D , TPS61280E , TPS61281D

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Device Comparison Table
  8. 7 Pin Configuration and Functions
  9. 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 I2C Interface Timing Characteristics #GUID-BD85FD7C-B9AF-4F5D-9DFF-CD61365A592A/SLVS5401494
    7. 8.7 I2C Timing Diagrams
    8. 8.8 Typical Characteristics
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Voltage Scaling Management (VSEL)
      2. 9.3.2 Spread Spectrum, PWM Frequency Dithering
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power-Save Mode
      2. 9.4.2 Pass-Through Mode
      3. 9.4.3 Mode Selection
      4. 9.4.4 Current Limit Operation
      5. 9.4.5 Start-Up and Shutdown Mode
      6. 9.4.6 Undervoltage Lockout
      7. 9.4.7 Thermal Shutdown
      8. 9.4.8 Fault State and Power-Good
    5. 9.5 Programming
      1. 9.5.1 Serial Interface Description (TPS61280D/E)
      2. 9.5.2 Standard-, Fast-, Fast-Mode Plus Protocol
      3. 9.5.3 HS-Mode Protocol
      4. 9.5.4 TPS6128xD/E I2C Update Sequence
    6. 9.6 Register Maps
      1. 9.6.1  Slave Address Byte
      2. 9.6.2  Register Address Byte
      3. 9.6.3  I2C Registers, E2PROM, Write Protect
      4. 9.6.4  E2PROM Configuration Parameters
      5. 9.6.5  CONFIG Register [reset = 0x01]
      6. 9.6.6  VOUTFLOORSET Register [reset = 0x02]
      7. 9.6.7  VOUTROOFSET Register [reset = 0x03]
      8. 9.6.8  ILIMSET Register [reset = 0x04]
      9. 9.6.9  Status Register [reset = 0x05]
      10. 9.6.10 E2PROMCTRL Register [reset = 0xFF]
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 TPS61281D with 2.5V-4.35 VIN, 1500 mA Output Current (TPS61280D with default I2C Configuration)
        1. 10.2.1.1 Design Requirement
        2. 10.2.1.2 Detailed Design Parameters
          1. 10.2.1.2.1 Inductor Selection
          2. 10.2.1.2.2 Output Capacitor
          3. 10.2.1.2.3 Input Capacitor
          4. 10.2.1.2.4 Checking Loop Stability
        3. 10.2.1.3 Application Performance Curves
      2. 10.2.2 TPS61282D with 2.5V-4.35 VIN, 2000 mA Output Current (TPS61280D with I2C Programmable)
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedures
        3. 10.2.2.3 Application Performance Curves
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Information
  14. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 静电放电警告
    6. 13.6 术语表
  15. 14Mechanical, Packaging, and Orderable Information
    1. 14.1 Package Summary

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10.2.1.3 Application Performance Curves

GUID-5E6D48CB-FAFE-4BD7-9022-FC0675B32EBF-low.gif
VOUT = 3.15 VVSEL = LowMode = Low
Figure 10-2 TPS61281D Efficiency vs Output Current
GUID-951B619C-2213-4A2F-BA4D-B43F90A41725-low.gif
VOUT = 3.35 VVSEL = HighMode = Low
Figure 10-4 TPS61281D Efficiency vs Output Current
GUID-08EFE847-EB2C-4FB8-9466-EA027B300368-low.gif
VOUT = 3.15 VMode = Low
Figure 10-6 TPS61281D DC Output Voltage vs Output Current
GUID-62610587-DE71-4C1E-98D2-E4902A902FD4-low.gif
VOUT = 3.35 VMode = Low
Figure 10-8 TPS61281D DC Output Voltage vs Output Current
GUID-CFD72D6A-CDFB-4489-B300-76A6C86038AF-low.gif
VOUT = 3.15 VVSEL = Low
Figure 10-10 TPS61281D DC Output Voltage vs Input Voltage
GUID-C6E79B3A-6A23-47AA-B312-15C244582BFF-low.gif
VOUT = 3.35 VTA = 85°CMode = Low
Figure 10-12 TPS61281D Maximum Output Current vs Input Voltage
GUID-946CFA78-30F9-4735-9DD2-4C6541863F86-low.gifFigure 10-14 TPS61281D Dynamic Voltage Management (VSEL) Load Current 50 mA
GUID-6E1B4C0B-DA59-4B3C-B502-4B5ACE5F122D-low.gifFigure 10-16 TPS61281D Forced Pass-Through to Boost Mode Transition
GUID-50C95B73-BFF5-4B10-8353-DE3ECC843883-low.gifFigure 10-18 TPS61280D, 81A Load Transient Response In PFM/PWM Operation
GUID-91B329E6-B9D7-470F-AA47-99F1D295D915-low.gifFigure 10-20 Start-Up at 30-Ω Load
GUID-2A786878-2135-4355-8DDA-A72640648C9E-low.gif
VOUT = 3.15 VVSEL = LowMode = Low
Figure 10-3 TPS61281D Efficiency vs Output Current
GUID-10986870-DC22-4D42-B0AD-DFDC5CA941F5-low.gif
VOUT = 3.35 VVSEL = HighMode = Low
Figure 10-5 TPS61281D Efficiency vs Output Current
GUID-569A1234-A4D5-476F-B59B-9FDA8DABFD97-low.gif
VOUT = 3.15 VMode = Low
Figure 10-7 TPS61281D DC Output Voltage vs Output Current
GUID-E3A157D9-94E2-447D-94AA-E7BB228E3C3A-low.gif
VOUT = 3.35 VMode = Low
Figure 10-9 TPS61281D DC Output Voltage vs Output Current
GUID-F82376D2-42AD-4016-B1AB-6F4CC9DC9CC9-low.gif
VOUT = 3.35 VVSEL = HighMode = Low
Figure 10-11 TPS61281D DC Output Voltage vs Input Voltage
GUID-618FB373-38CA-4C79-BAAA-9DE986789F5A-low.gifFigure 10-13 Boost to Pass-Through Mode Exit / Entry
GUID-3BBDFE75-0FC1-4568-9A37-9980B8D2E1CD-low.gifFigure 10-15 TPS61281D Dynamic Voltage Management (VSEL) Load Current 500 mA
GUID-30B33B72-09D8-4CD4-A63E-E431442603DE-low.gifFigure 10-17 TPS61280D, 81A Load Transient Response In PFM/PWM Operation
GUID-A835EDF6-1B95-4E68-A0C3-79AFA2C9028F-low.gifFigure 10-19 Start-Up at No Load