I need to power a Raspberry Pi 3 from 12V.
Usually, I really like the MP1584 modules, but they seem to be at their limit with the Rpi3 current requirements.
Can anybody suggest a module that can deal with this? Please no LM2696 that are advertised at 3A. Something more modern with a higher switching frequency.
Lots of others to choose from.
Out of curiosity, why are you concerned about the switching frequency?
If you want small, efficient, high-end, well documented, then look at the Pololu range.
Be prepared to pay more than average.
Leo..
CurtCarpenter:
This?
What chip is that based on?
CurtCarpenter:
Lots of others to choose from.
I know. That is why I am asking for a proper one.
CurtCarpenter:
Out of curiosity, why are you concerned about the switching frequency?
Size, clean output and efficiency. Compare the Polulu 15A regulators to your 9A regulator.
Might go for Polulu ...
Oh -- sorry. It's not actually my module design. I've had good luck with similar modules though -- although I've never pushed them very hard and that seems to make a big difference.
For $4 you could make some of your own measurements on things like switching frequency and efficiency vs. load. It would be interesting to see some hard comparison data.
I guess my question would be whether I was going to get an order-of-magnitude better life-time performance by paying an order-of-magnitude higher price. Maybe so, I don't know.
Here is a vendor that provides detailed data sheets for its modules, including efficiency data and switching speed: https://www.mornsunamerica.com/index.html