Go Down

Topic: 8-14V input with regulated 12V output needed (Read 1 time) previous topic - next topic

Z0rr0

This would be for a car application, 8-10V when cranking, 12.5V not running, and 13.5ish when running.
I have a sensor that i need to provide a stable 12V with any of those input voltages.
Anybody got any ideas?

i tried a radio-shack 12V TO220 package regulator, but it wants at least 14v input.. it works, but not very well.

retrolefty

At what maximum current output value?

You could use a switching boost regulator to boost to say 15vdc, feeding a switching buck regulator adjusted down to +12dc output.

Lefty




royco

You would need a sepic or buck/boost switching power supply. Search for them on ebay. They have modules that can power up to 2 Amps.
Panucatt Devices


jwatte

#4
Feb 13, 2012, 11:40 pm Last Edit: Feb 13, 2012, 11:42 pm by jwatte Reason: 1
It's probably actually easier to boost to 16-24V, and then regulate back down to 12V, especially if you don't need a lot of current.
Digi-Key has literally hundreds of different voltage converters that will do the trick.
Try an LM2585 perhaps?
Or a ready-made module for about $5. Something like http://search.digikey.com/us/en/products/VBSD1-S12-S12-SIP/102-1365-ND/989820
Higher-end parts with wider input range: http://search.digikey.com/us/en/products/VWRBS2-D12-S12-SIP/102-1511-ND/1558906

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy