SLUUCQ0C August   2025  – September 2025 TPS922052 , TPS922053 , TPS922054 , TPS922055

PRODUCTION DATA  

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6. 1 Introduction
  7. 2 Warnings and Cautions
  8. 3 Description
    1. 3.1 Typical Applications
  9. 4 Test Setup
    1. 4.1 Connector Description
    2. 4.2 Input/Output Connection
  10. 5 Typical Characteristics Curves and Waveforms
    1. 5.1 Efficiency
    2. 5.2 Line Regulation
    3. 5.3 Load Regulation
    4. 5.4 Analog Dimming Performance
    5. 5.5 PWM Dimming Performance
    6. 5.6 Hybrid Dimming Performance
    7. 5.7 Flexible Dimming Performance
  11. 6 Schematic
  12. 7 Layout
  13. 8 Bill of Materials
  14. 9 Additional Information
    1.     Trademarks
  15. 10Revision History

5.1 Efficiency

Figure 5-1 shows the efficiency versus input duty cycle in analog dimming mode. The full-scale LED current IFS is set at 4A. The frequency of the input PWM signal at the ADIM/HD pin is 20kHz. Input voltage VIN is 48V. The load is 8 white LEDs in series.

Figure 5-2 shows the efficiency versus input duty cycle in PWM dimming mode. The full-scale LED current IFS is set at 4A. The frequency of the input PWM signal at the PWM/EN pin is 20kHz. Input voltage VIN is 48V. The load is 8 white LEDs in series.

TPS922055EVM TPS922055 Efficiency vs. Input Duty Cycle in Analog Dimming ModeFigure 5-1 Efficiency vs. Input Duty Cycle in Analog Dimming Mode
TPS922055EVM TPS922055 Efficiency vs. Input Duty Cycle in PWM Dimming ModeFigure 5-2 Efficiency vs. Input Duty Cycle in PWM Dimming Mode