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

9.2.1.3 Application Curves

GUID-E1D128F9-4FAA-490D-A439-73C8C021259C-low.svg
Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current Ripple (AC)
Figure 9-2 LED Current Ripple at PWMADIM = 100%, 1 kHz and FSW = 400 kHz
GUID-FDFEB0AC-E401-4703-80ED-A1F9FF29A3E8-low.svg
Black: PWMADIM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-4 LED Current Transient for a PWMADIM Transition from 1% to 99%, 1 kHz
GUID-AA27D140-16DC-4C1D-B60A-7F2BCE64374C-low.svg
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-6 Start-Up at PWMADIM = 100%, 1 kHz
GUID-82FE8127-B8EF-416A-B0C2-AAD0B96B3E63-low.svg
Black: UVP, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-8 LED Open-Load Protection
GUID-7BF15419-D074-4600-A35F-1DCF2767D63F-low.svg
Black: LED- Voltage, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-10 LED+ and LED– Short-Circuit Protection
GUID-0BB85E32-C6BB-43A5-B750-C3119FC45FEC-low.svg
Light Blue: SW, Red: FAULT, Orange: Inductor Current, Deep Blue: LED Current, Green: CSP-CSN
Figure 9-12 Sense-Resistor Open Protection
GUID-FB648183-292E-48E8-AB5F-EDC0797781B2-low.svg
Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current Ripple (AC)
Figure 9-3 LED Current Ripple at PWMADIM = 10%, 1 kHz and FSW = 400 kHz
GUID-484E479D-96A0-4CCA-9E54-4C8D8F9B12CA-low.svg
Black: PWMADIM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-5 LED Current Transient for a PWMADIM Transition from 99% to 1%, 1 kHz
GUID-00492054-20CF-430F-A268-539C9D8C3673-low.svg
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 9-7 Shutdown at PWMADIM = 100%, 1 kHz
GUID-9CE57A1F-A38A-4F11-8375-D34C175B00E1-low.svg
Black: UVP, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Green: LED- Voltage
Figure 9-9 LED– Short-to-PGND Protection
GUID-86CB5474-884D-4862-9287-3635FDDFF863-low.svg
Black: UVP, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Green: CSP-CSN
Figure 9-11 Switching FET Short-Circuit Protection
GUID-EF528995-0738-4D01-BFEE-47ECA387AA00-low.svg
Black: COMP, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Green: CSP-CSN
Figure 9-13 Sense-Resistor Short-Circuit Protection