One approach is to raise the switching frequency so that smaller inductors and capacitors can be used. Is there anything that needs to be taken into consideration when determining the frequency?|FAQ|ROHM Semiconductor

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One approach is to raise the switching frequency so that smaller inductors and capacitors can be used. Is there anything that needs to be taken into consideration when determining the frequency?
- There are various things to be considered. One is the need to suppress output ripple voltages to a value that can be tolerated by the device being fed power. The output ripple voltage depends on the amplitude of the ripple current flowing in the inductor. The ripple current in the inductor depends on the output inductance and capacitance (LC), and on the switching frequency. Hence optimal devices must be selected, also including inductor and capacitor sizes.