Electronics > Beginners
Can I get 5V 2.5A from a 12V 1.5A power brick?
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Mr. Scram:
You could measure the wire resistance and calculate the expected drop.
digsys:
Unless you want to go to the trouble of rolling your own, something like the TI PTN78060W is perfect. 3A, high efficiency.
Actually designing them in right now :-) into a few projects. Just add a couple caps and a Vset resistor.
Zero999:
You'll probably find building a 12V to 5V converter will cost as much or more, than the correct power supply in the first place. You might be able to save a tiny amount by purchasing a 12V to 5V ready made module, but that's just penny pinching.
technix:

--- Quote from: digsys on August 17, 2018, 06:07:48 am ---Unless you want to go to the trouble of rolling your own, something like the TI PTN78060W is perfect. 3A, high efficiency.
Actually designing them in right now :-) into a few projects. Just add a couple caps and a Vset resistor.

--- End quote ---
Currently it is choosing between a single-phase SGM6130 based design or go with a M1VRv2-2DX2 software-defined multi-phase converter design.
technix:

--- Quote from: Hero999 on August 17, 2018, 07:46:39 am ---You'll probably find building a 12V to 5V converter will cost as much or more, than the correct power supply in the first place. You might be able to save a tiny amount by purchasing a 12V to 5V ready made module, but that's just penny pinching.

--- End quote ---
I need to build a MCU board for the NeoPixel strip anyway, so this power module is simply piggybacking. No significant cost occurred with or without that power module.
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