SLUUBZ9 May   2020 TPS92200

 

  1.   TPS92200D1/D2EVM 30-V, 1.5-A Buck LED Driver Evaluation Module
    1.     Trademarks
    2. 1 Introduction
    3. 2 Warnings and Cautions
    4. 3 Description
      1. 3.1 Typical Applications
      2. 3.2 Test Setup
        1. 3.2.1 Connector Description
        2. 3.2.2 Input/Output Connection
    5. 4 Performance Data and Typical Characteristics Curves
      1. 4.1 Efficiency
      2. 4.2 Line Regulation
      3. 4.3 Load Regulation
      4. 4.4 Analog Dimming
      5. 4.5 PWM Dimming Waveforms
    6. 5 Schematic
    7. 6 TPS92200D1/D2EVM PCB Layout
    8. 7 Bill of Materials

4.2 Line Regulation

Figure 4 shows the output current deviation ratio vs. input voltage in analog dimming mode. VDIM is 1.2V. 1 White LED is used as load. The LED current is set at 250mA, 500mA, 1.0A and 1.5A, respectively. The typical forward voltage of the White LED is 3.1 V at 1.5 A, and 2.8 V at 0.35 A.

LineRegulation.gifFigure 4. LED Current Deviation vs. Input Voltage in Analog Dimming Mode, 1 WLED