SLVUCE0 may   2023 TPS92200

PRODUCTION DATA  

  1.   1
  2.   TPS92200D1/D2RXLREVM 30-V, 1.5-A Buck LED Driver Evaluation Module
  3.   Trademarks
  4. 1Introduction
  5. 2Warnings and Cautions
  6. 3Description
    1. 3.1 Typical Applications
    2. 3.2 Test Setup
      1. 3.2.1 Connector Description
      2. 3.2.2 Input/Output Connection
  7. 4Performance 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
  8. 5Schematic
  9. 6TPS92200EVM PCB Layout
  10. 7Bill of Materials

4.4 Analog Dimming

Figure 4-6 shows the output current ratio to the full-scale output current versus VDIM voltage level in analog dimming mode. VIN = 12 V, 1 White LED is used as load. The LED current is set at 1.0 A with VDIM=1.2V.

GUID-5ABCEF5D-5498-4678-BCFE-4B7ADA0D74DE-low.gifFigure 4-6 Output Current Ratio vs. VDIM in Analog Dimming Mode(TPS92200D1RXLR)

Figure 4-7 shows the output current ratio to the full-scale output current versus PWM duty cycle in analog dimming mode. VIN = 12 V, 2 White LEDs in series used as load. The LED current is set at 1.0 A with 100% PWM duty. PWM frequency is 50 kHz.

GUID-85FEA569-B638-4BA6-A80E-A057FC06B95F-low.gifFigure 4-7 Output Current ratio vs PWM Duty Cycle in Analog Dimming Mode(TPS92200D2RXLR)