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

2.7 LED Driver Calculator Tool

If LED driver has changes based on different LED specifications or even Lasers, you can use LED Driver Components Calculator. LED driver components calculator is an excel-based calculator that allows customers to calculate various components values based on led driver specifications in tab Component Values. You can enter values in blue such as LED voltage signal, LED current and others, and the calculator will calculate the rest of the values needed for the driver to work as shown in Figure 12.

Figure 12. Driver Component Calculator ToolTIDA-080008 LED_Calc_Tool_1.gif

Second tab ComponentRatings tab shown in Figure 13 calculates various component ratings based on selected specs from ComponentValues tab. This should help customers choose appropriate power and voltage ratings.

Figure 13. Component Ratings ToolTIDA-080008 LED_Calc_Tool_2.gif