JAJSRP9 September   2024

ADVANCE INFORMATION  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 説明
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Rating
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Pulse Frequency Modulation (PFM)
      2. 7.3.2 Forced PWM Mode
      3. 7.3.3 Low Dropout Operation (100% Duty Cycle)
      4. 7.3.4 Soft Start
      5. 7.3.5 Switch Current Limit and HICCUP Short-Circuit Protection
      6. 7.3.6 Undervoltage Lockout
      7. 7.3.7 Thermal Warning and Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable and Disable (EN)
      2. 7.4.2 Output Discharge
      3. 7.4.3 Power Good (PG)
      4. 7.4.4 Voltage Setting and Mode Selection (VSET/MODE)
    5. 7.5 Programming
      1. 7.5.1 Serial Interface Description
      2. 7.5.2 Standard-, Fast-, and Fast-Mode Plus Protocol
      3. 7.5.3 HS Mode Protocol
      4. 7.5.4 I2C Update Sequence
      5. 7.5.5 I2C Register Reset
  9. 8 Register Map
    1. 8.1 Target Address Byte
    2. 8.2 Register Address Byte
    3. 8.3 VOUT Register 1
    4. 8.4 VOUT Register 2
    5. 8.5 CONTROL Register
    6. 8.6 STATUS Register
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Setting The Output Voltage
        3. 9.2.2.3 Output Filter Design
        4. 9.2.2.4 Inductor Selection
        5. 9.2.2.5 Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
        1. 9.4.2.1 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 サード・パーティ製品に関する免責事項
      2. 10.1.2 Development Support
        1. 10.1.2.1 Custom Design With WEBENCH® Tools
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 ドキュメントの更新通知を受け取る方法
    4. 10.4 サポート・リソース
    5. 10.5 Trademarks
    6. 10.6 静電気放電に関する注意事項
    7. 10.7 用語集
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information

9.2.3 Application Curves

VIN = 5.0V, VOUT = 1.2V, TA = 25°C, BOM = Table 9-2, unless otherwise noted. Solid lines show the FPWM mode and dashed lines show PFM.

TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 5VTA = 25°CPFM and FPWM
Figure 9-4 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 5VTA = 85°CPFM and FPWM
Figure 9-6 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 5VTA = 85°CFPWM
Figure 9-8 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Load Regulation
VIN= 5VTA = 25°C

PFM

Figure 9-10 Load Regulation
TPS6286A06 TPS6286B10 Load Regulation
VIN= 5VTA = 25°CFPWM
Figure 9-12 Load Regulation
TPS6286A06 TPS6286B10 Switching Frequency
VIN = 3.3VTA = 25°CPFM
Figure 9-14 Switching Frequency
TPS6286A06 TPS6286B10 Safe Operating Area
VIN = 5.0VRθJA = 43.2°C/W

TJMAX= 125°C

Figure 9-16 Safe Operating Area
TPS6286A06 TPS6286B10 Line Regulation
VIN = 2.4V to 5.5V to 2.4V in 1V/usVOUT = 1.2VLoad = 10mA
Figure 9-18 Line Regulation
TPS6286A06 TPS6286B10 PFM Operation
VIN = 5.0VBOM = 2 × 22uF
VOUT = 1.2VPFM, No Load
Figure 9-20 PFM Operation
TPS6286A06 TPS6286B10 FPWM Operation
VIN = 5.0VBOM = 2 × 22uF
VOUT = 1.2VFPWM, IOUT = 6A
Figure 9-22 FPWM Operation
TPS6286A06 TPS6286B10 Start-up into Full Load
TPS6286B10VOUT = 1.2VLoad = 10A
Figure 9-24 Start-up into Full Load
TPS6286A06 TPS6286B10 Load Transient - FPWM Operation
VIN = 5.0VBOM = 2 × 22uF
VOUT = 1.2VIOUT = 10mA to 6A
Figure 9-26 Load Transient - FPWM Operation
TPS6286A06 TPS6286B10 HICCUP Short-Circuit ProtectionFigure 9-28 HICCUP Short-Circuit Protection
TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 3.3VTA = 25°CPFM and FPWM
Figure 9-5 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 3.3VTA = 85°CPFM and FPWM
Figure 9-7 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Efficiency versus Output Current
VIN= 3.3VTA = 85°CFPWM
Figure 9-9 Efficiency versus Output Current
TPS6286A06 TPS6286B10 Load Regulation
VIN= 3.3VTA = 25°C

PFM

Figure 9-11 Load Regulation
TPS6286A06 TPS6286B10 Load Regulation
VIN = 3.3VTA = 25°CFPWM
Figure 9-13 Load Regulation
TPS6286A06 TPS6286B10 Switching Frequency
VIN = 5.0VTA = 25°CPFM
Figure 9-15 Switching Frequency
TPS6286A06 TPS6286B10 Safe Operating Area
VIN = 3.3VRθJA = 43.2°C/W

TJMAX= 125°C

Figure 9-17 Safe Operating Area
TPS6286A06 TPS6286B10 Line Regulation
VIN = 2.4V to 5.5V to 2.4V in 1V/usVOUT = 1.2VLoad = 10A
Figure 9-19 Line Regulation
TPS6286A06 TPS6286B10 FPWM Operation
VIN= 5.0VBOM = 2 × 22uF
VOUT= 1.2VFPWM, No Load
Figure 9-21 FPWM Operation
TPS6286A06 TPS6286B10 Start-up With No Load
TPS6286A06VOUT = 1.2VNo Load
Figure 9-23 Start-up With No Load
TPS6286A06 TPS6286B10 Load Transient - PFM Operation
VIN = 5.0VBOM = 2 × 22uF
VOUT = 1.2VIOUT = 10mA to 6A
Figure 9-25 Load Transient - PFM Operation
TPS6286A06 TPS6286B10 Load Transient - FPWM Operation
VIN = 5.0VBOM = 2 × 22uF
VOUT = 1.2VIOUT = 3A to 6A
Figure 9-27 Load Transient - FPWM Operation