|
|
LED circuit calculator for flyback topology. (Excel sheet)
The coil and resistor calculation sheet.
This tool is targeting fly back boost topology.
This is a tool to balance and optimize your LED-driver circuit, and to estimate component values. The tool describes simplified how the waveform of the current over the diodes will look like for different number of diodes, type of coil and resistors in your applications.
You will also use the tool to optimize LED current behavior over a specified supply voltage range.
Use this tool and you will get a good reference to design your specific LED driver circuit.
Remarks :
1. This tool describes a fly back design using MLX10803. It is an energy regulation based on forward regulation.
2. In some designs you need additional feedback loop to provide a better control of the regulated LED current. MLX10803 have additional possibilities for these loops but they are not included in this tool.
3. In applications for fly back topology you should put a relatively large capacitor on the output parallel with the LEDs. This tool does not include that optimization of that capacitor! This optimizations is simple to do visually in a later design phase.
4. EMC and EMR filter are not included in the demonstrative schematic in the Excel sheet.
Current Revision:
2.1
File Type: Software & Tools
File Size: 720.0 KB
| Connection |
Download time |
| 56k |
1.76 min |
| DSL/Cable |
0.18 min |
Downloads
30 days: 71
total: 1475
|
|