This synchronous buck converter design calculator excel – external switches is intended to help engineers speed up their designs by providing quick component selections. It is fully automated with detailed notes in each line item thus making it easy to understand.

This design calculator is made in excel so that it is accessible to all engineers or any users. As the title of this design calculator, this is specific for synchronous buck converter with external switches. There is an another Synchronous Buck Converter Excel Design Template publish here but it is focused on internal switches. Internal switches means the switching devices are internal to the controller.

The Features of this Synchronous Buck Converter Design Calculator Excel – External Switches

The calculator is equipped with the applicable schematic and the notes. As long as your design is according to these, you can use this design calculator.

The first section of the calculator is the declaration of input or given values. There is a voltage spike assumption here to consider a good margin in selecting the MOSFET in terms of voltage rating.

The second section is about parameter sizing and calculations. There are only two fields here that need input from the user. The first one is the %ripple allowance. This is necessary to select the initial value of the inductance. The second one is the actual inductance the user selected to use. The rests are all automated calculations.

The third section is about power losses of the components. There are some fields that need user inputs. These are the items that need effort from the user but not that hard since all these are provided in the manufacturer’s datasheet. Once all these fields are filled, the remaining fields will yield automated results.

The last section is efficiency estimation. It is estimation since the result of it depends how accurate the values supplied by the user.

This design calculator is almost the same to the Buck Converter Design Using Excel Calculator.

The only difference of the two is that this template is focused in using both MOSFETs instead of a MOSFET and a diode for the other design calculator.

This design template is derived carefully and checked through other means like simulations and separate derivations using Mathcad. Actual past projects are also designed using this calculator.

After downloading this Synchronous Buck Converter Design Calculator Excel-External Switches and have trouble understanding, contact [email protected].

If you are interested to learn more details about how to design buck converter, read Buck Converter Design Tutorial.

There is another design template for buck converter design but in Mathcad format. It can be used for external switch and diode or switches for synchronous operations.

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