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Channel: Any downside to feeding a buck regulator into a linear one? - Electrical Engineering Stack Exchange
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Answer by Autistic for Any downside to feeding a buck regulator into a linear...

The downside is power losses .The linear will waste some power .When you go from 5 to 3V3 you can expect the linear reg to be 66% efficient .If your buck converter is 90% efficient your overall...

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Answer by Passerby for Any downside to feeding a buck regulator into a linear...

The only drawback is loss of efficiency if any. Depends on how efficient a 12 to 3.3V linear regulator would be or a 5v to 3.3v switching regulator would be. Otherwise, a linear regulator typically...

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Any downside to feeding a buck regulator into a linear one?

I need to convert 12 V down to 5 V and 3.3 V. I am using linear regulators right now but they get pretty warm and eventually I would like to supply more current for it (around 500-700 mA). If I used a...

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