SLVSGG9A June   2023  – September 2023 TPS922052 , TPS922053 , TPS922054 , TPS922055

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adaptive Off-Time Current Mode Control
        1. 8.3.1.1 Switching Frequency Settings
        2. 8.3.1.2 Spread Spectrum
      2. 8.3.2 Setting LED Current
      3. 8.3.3 Undervoltage Lockout
      4. 8.3.4 Internal Soft Start
      5. 8.3.5 Dimming Mode
        1. 8.3.5.1 PWM Dimming
        2. 8.3.5.2 Analog Dimming
        3. 8.3.5.3 Hybrid Dimming
        4. 8.3.5.4 Flexible Dimming
      6. 8.3.6 CC/CV Charging Mode
      7. 8.3.7 Fault Protection
      8. 8.3.8 Thermal Foldback
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 TPS922054 24-V Input, 4-A Output, 4-piece WLED Driver With Analog Dimming
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Inductor Selection
          2. 9.2.1.2.2 Input Capacitor Selection
          3. 9.2.1.2.3 Output Capacitor Selection
          4. 9.2.1.2.4 Sense Resistor Selection
          5. 9.2.1.2.5 Other External Components Selection
        3. 9.2.1.3 Application Curves
      2. 9.2.2 TPS922054 48-V Input, 2-A Output, 12-piece WLED Driver with PWM Dimming
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Input Capacitor Selection
          3. 9.2.2.2.3 Output Capacitor Selection
          4. 9.2.2.2.4 Sense Resistor Selection
          5. 9.2.2.2.5 Other External Components Selection
        3. 9.2.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.6 Typical Characteristics

VIN = 24 V, IOUT = 3 A, LED count = 2, L = 10 µH, FSW = 400 kHz, unless otherwise specified
GUID-8C728789-79CE-4D0B-9D40-D92E5BB8856F-low.svgFigure 7-1 Output Current vs. Input Voltage
GUID-4D8BF3A5-90F1-45D2-A370-97C5E15705AC-low.svgFigure 7-3 ADIM Duty Cycle vs. CSP-CSN Voltage in Analog Dimming
GUID-26D92367-8F3D-41BB-8F6C-9DEBF651855A-low.svgFigure 7-5 Shutdown Current vs. Junction Temperature
GUID-9E68C5CF-97F3-4238-BA63-C4196E565A25-low.svgFigure 7-7 Switching FET RDSON vs. Junction Temperature
GUID-861F4412-1977-422A-9785-D73321BF23CD-low.svgFigure 7-9 ADIM/HD Threshold vs. Junction Temperature
GUID-A3BE4023-7AE8-4C51-8001-D9A71B503ED1-low.svgFigure 7-11 Efficiency at 24-V Input Voltage, 4-A Output Current
GUID-A6B18973-E366-482E-8124-C5B17641FA77-low.svgFigure 7-2 Output Current vs. LED Count
GUID-AB1EC88A-BF0C-4AFB-B3BC-58BB05AA5491-low.svgFigure 7-4 PWM Duty Cycle vs. CSP-CSN Voltage in 20-kHz Hybrid Dimming
GUID-C99E6DAB-C8F6-4488-9DE5-4BDBB37E32B3-low.svgFigure 7-6 Internal LDO Output vs. Junction Temperature
GUID-4E410770-A6B2-4CA6-9C68-DD5E7FCEA366-low.svgFigure 7-8 VIN UVLO Threshold vs. Junction Temperature
GUID-019EB413-331A-4085-B143-74ECB5F50614-low.svgFigure 7-10 EN/PWM Threshold vs. Junction Temperature
GUID-88D42834-0266-46BF-83CD-D9C2C12AE2F9-low.svgFigure 7-12 Efficiency at 48-V Input Voltage, 4-A Output Current