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

5.7 Flexible Dimming Performance

Figure 5-14, Figure 5-15 and Figure 5-16 show the flexible dimming waveforms at different ADIM/HD pin and PWM/EN pin input duty cycles. Input voltage is 48V, with 7 white LEDs in series used as load. The full-scale LED current is set at 4A. The frequency of the input PWM signal at the ADIM/HD pin and PWM/EN pin is 20kHz.

TPS922055EVM TPS922055 Waveforms at 50% Duty Cycle ADIM/HD and 50% Duty Cycle PWM/EN Figure 5-14 Waveforms at 50% Duty Cycle ADIM/HD and 50% Duty Cycle PWM/EN
TPS922055EVM TPS922055 Waveforms at 10% Duty Cycle ADIM/HD and 90% Duty Cycle PWM/EN Figure 5-15 Waveforms at 10% Duty Cycle ADIM/HD and 90% Duty Cycle PWM/EN
TPS922055EVM TPS922055 Waveforms at 90% Duty Cycle ADIM/HD and 10% Duty Cycle PWM/EN Figure 5-16 Waveforms at 90% Duty Cycle ADIM/HD and 10% Duty Cycle PWM/EN