How to select an Inductor and capacitor for a switch mode power supply.
What are the formulas for selecting an Inductor and capacitor for a step up and step down power supply?
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How to select an Inductor and capacitor for a switch mode power supply.
What are the formulas for selecting an Inductor and capacitor for a step up and step down power supply?
Section 8 of the data sheet gives the equations needed and examples for deciding on what value components to use. Here is the datasheet link. You can also use the WEBENCH design tool by clicking this link. The tool is at the bottom of the page.
Thanks,
Caleb
Hello Caleb.
Thank you for replying.
I am trying to understand how the initial values of the L and C were chosen. Such as the 10uH and 47uF. I did not see this in the data sheet. Are there other SMPS application notes or other books which show how to make this calculation. How does the WEBENCH calculate them?
The data sheet does have the calculation for current determination.
This might help. Click this link. The diagram shows a buck converter that utilizes a diode instead of another switch, but the equations still apply.