ZHCU740 April   2020

 

  1.    说明
  2.    资源
  3.    特性
  4.    应用
  5.    设计图像
  6. 1System Overview
    1. 1.1 Key System Specifications
    2. 1.2 Block Diagram
    3. 1.3 Top Side Pump
    4. 1.4 LED Driver Input Signals
    5. 1.5 LED Driver SDIM/UDIM Settings
    6. 1.6 TPS92641 Board Description
    7. 1.7 Setting the LED Current and Analog Dimming
    8. 1.8 PWM Dimming
  7. 2LED Driver Key Parameters
    1. 2.1 Enable and Disable Delay
    2. 2.2 Rise and Fall Time
    3. 2.3 Ripple
    4. 2.4 Performance Parameters
    5. 2.5 LED Load Capacitor for Rise/Fall Time
    6. 2.6 LED Load Capacitor And Audible Noise
      1. 2.6.1 Layout Considerations
      2. 2.6.2 Electrolytic capacitor considerations
      3. 2.6.3 Standoff Capacitors
    7. 2.7 LED Driver Calculator Tool
  8. 3Layout
  9. 4Related Documentation
    1. 4.1 商标
    2. 4.2 Third-Party Products Disclaimer

1.4 LED Driver Input Signals

Each color receives 2 control signals ENABLE to turn LED on and off, and PWM signal which controls LED current level. Connector J1 shows all digital inputs into LED driver board including EN and PWM signals, as well as SSI_SUBFRAME, SENSE_PLS and PWM_CAL signals which are used for calibration purposes.

Figure 5. Driver Input SignalsTIDA-080008 Input_Connector.gif