SLVSGG9B June   2023  – February 2025 TPS922052 , TPS922053 , TPS922054 , TPS922055

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 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 Adaptive Off-Time Current Mode Control
        1. 7.3.1.1 Switching Frequency Settings
        2. 7.3.1.2 Spread Spectrum
      2. 7.3.2 Setting LED Current
      3. 7.3.3 Undervoltage Lockout
      4. 7.3.4 Internal Soft Start
      5. 7.3.5 Dimming Mode
        1. 7.3.5.1 PWM Dimming
        2. 7.3.5.2 Analog Dimming
        3. 7.3.5.3 Hybrid Dimming
        4. 7.3.5.4 Flexible Dimming
      6. 7.3.6 CC/CV Charging Mode
      7. 7.3.7 Fault Protection
      8. 7.3.8 Thermal Foldback
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 TPS922054 24V Input, 4A Output, 4-piece WLED Driver With Analog Dimming
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Input Capacitor Selection
          3. 8.2.1.2.3 Output Capacitor Selection
          4. 8.2.1.2.4 Sense Resistor Selection
          5. 8.2.1.2.5 Other External Components Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 TPS922054 48V Input, 2A Output, 12-piece WLED Driver with PWM Dimming
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Inductor Selection
          2. 8.2.2.2.2 Input Capacitor Selection
          3. 8.2.2.2.3 Output Capacitor Selection
          4. 8.2.2.2.4 Sense Resistor Selection
          5. 8.2.2.2.5 Other External Components Selection
        3. 8.2.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.6 Typical Characteristics

VIN = 24V, IOUT = 3A, LED count = 2, L = 10µH, FSW = 400kHz, unless otherwise specified
TPS922052 TPS922053 TPS922054 TPS922055 Output Current vs. Input VoltageFigure 6-1 Output Current vs. Input Voltage
TPS922052 TPS922053 TPS922054 TPS922055 ADIM Duty Cycle vs. CSP-CSN Voltage in Analog DimmingFigure 6-3 ADIM Duty Cycle vs. CSP-CSN Voltage in Analog Dimming
TPS922052 TPS922053 TPS922054 TPS922055 Shutdown Current vs. Junction TemperatureFigure 6-5 Shutdown Current vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 Switching FET RDSON vs. Junction TemperatureFigure 6-7 Switching FET RDSON vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 ADIM/HD Threshold vs. Junction TemperatureFigure 6-9 ADIM/HD Threshold vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 Efficiency at 24V Input Voltage, 4A Output CurrentFigure 6-11 Efficiency at 24V Input Voltage, 4A Output Current
TPS922052 TPS922053 TPS922054 TPS922055 Output Current vs. LED CountFigure 6-2 Output Current vs. LED Count
TPS922052 TPS922053 TPS922054 TPS922055 PWM Duty Cycle vs. CSP-CSN Voltage in 20kHz Hybrid DimmingFigure 6-4 PWM Duty Cycle vs. CSP-CSN Voltage in 20kHz Hybrid Dimming
TPS922052 TPS922053 TPS922054 TPS922055 Internal LDO Output vs. Junction TemperatureFigure 6-6 Internal LDO Output vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 VIN UVLO Threshold vs. Junction TemperatureFigure 6-8 VIN UVLO Threshold vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 EN/PWM Threshold vs. Junction TemperatureFigure 6-10 EN/PWM Threshold vs. Junction Temperature
TPS922052 TPS922053 TPS922054 TPS922055 Efficiency at 48V Input Voltage, 4A Output CurrentFigure 6-12 Efficiency at 48V Input Voltage, 4A Output Current