power supply adpter(AC to DC) selection

Status
Not open for further replies.
J

jigar.patel

Newbie level 3
Joined
Apr 17, 2013
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Visit site
Activity points
1,320
Hello All,
I don't have 5V, 5A power supply adapter (AC to DC ).
I have 12V, 3A power supply adapter.

my current requirement is 5A at 5V.

So, can (12V,3A) adapter replace (5V,5A) adapter?
because 12V power supply adapter has only 3A current capability & i require 5A current & 5V.

this adapter will be used to source the power to step down DC DC converter.

so can i use (12V,3A) power supply adapter instead of (5V,5A) adapter?
 

If you are using a switched type DCDC converter to convert 12V to 5V you can theoretically get 5V at 5A.

Max Power input = 12Vx3A = 36W.
Max Power output = 5Vx5A = 25W.

You cannot use a linear converter since the 12V adaptor cannot handle more than 3A.
 

Thanks to all for helping me to choose right adapter for my 12V to 5V step down DC DC converter.
I will use 12V, 3A (AC to DC) power supply adapter for (12V to 5V,5A) step down DC DC converter.

Once again thanks to All.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…