Inductor selection of MP2480

Lighting Solutions
1

Hi,
I am working with MP2480 in my design

VIN = 24V; Vout = 19V; Iout = 40mA (Backlight max current)

Stuck with the inductor selection.

Screenshot 2024-12-20 105518

Using the formula in datasheet.
For calculation, I have taken the switching frequency as Fs = 2MHz; getting the inductor value 0.000198H (0.198mH).

Kindly suggest that the inductor value calculated is fine or provide the inductor value ranges

2

Using this equation it seems to be correct.

3

Thanks for your response.

Then it will be fine while using inductor of mH ranges also right.

4

Hello anjanaan,

You are able to use a larger inductor if you would like. You still have to make sure the selection agrees with what your use case is. The datasheet states “A larger-value inductor will result in smaller switching frequency.”