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LED circuit calculator for flyback topology. (Excel sheet)
The excel coil and sense resistor calculation sheet.
This tool is targeting fly back boost topology.
This is a tool to balance your LED-driver circuit, and to estimate component values. The tool describes (a bit simplified) how the wave from of the current over the diodes will look like for different number of diodes, type of coil and current sensing.
Play with this tool and you will get a sense how to design your specific circuit.
Remarks:
1. This tool describes the simplest function of a fly back design using MLX10803. In many designs you need additional feedback loop to provide a good control of the regulated LED current. MLX10803 have additional inputs for these loops but they are not used in this tool
2. In your application especially 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!
Current Revision:
1.0
File Type: Software & Tools
File Size: 264.5 KB
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Downloads
30 days: 151
total: 655
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