General question regarding design with PI parts

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Dear,

I need to design an device attached to mains (universal) and using 2G/3G modem for communication.

Usually, it will consume approx 1.5W (5V, 300mA), but during the 2G bursts (duration few milliseconds), it may go up to 2W (5V, 2A).

My question is how to select a proper regulator (not over-sized)? Can someone suggest some part?

Thanks.

Hi,
Thank you for considering Power Integrations for your solution.

We have a product selector guide available on our website for Low Power Designs. Please refer:
https://ac-dc.power.com/products/product-documents/product-selector-guide-low-power-adapter-charger-products/

If you need further assistance with choosing the right product for your design, please contact any of our sales offices. A full list of our sales offices is available here:
https://ac-dc.power.com/sales/

Best Regards,
PI-Kryten