48V DC-DC converter [if to off-topic, admin pls remove]
-
Hi,
I'm using my Omega2 in an off-grid project. One of the items is to monitor a 48V battery bank. Looking for an efficient DC-DC converter that supports 48V to 5V. The only SKU I have been able to find is ! $50.
It seems there is several people here with lots of electronics knowledge, hoping somebody might have a suggestion for a component that will support 48V
TX!
Bas
-
@Bas-Rijniersce Something like e.g. http://www.ebay.com/itm/DC-DC-24V-36V-48V-to-5V-Buck-Step-Down-Module-Voltage-Converter-for-Car-/262800062746 might do the trick for you. Or search for "48v 5v step down module", without parentheses, on eBay or Aliexpress.
-
@Bas-Rijniersce Here are several US branded units at surplus prices, $5 each - 48V to 5V at 3amps Artesyn CXE15-48S and 48V to 5V at 6amps Lucent JW03OA1-M. Electronic Goldmine has many other DC-DC convertors for other in/ out voltages.
-
Do you want to monitor it or derive power from it, or both?
They are somewhat different problems - power supplies may hide moderate variations in input voltage, while just measuring voltage could be as simple as a divider made with high value resistors (possibly a few in series) and maybe a clamp as backup input protection.
-
@Chris-Stratton said in 48V DC-DC converter [if to off-topic, admin pls remove]:
Do you want to monitor it or derive power from it, or both?
They are somewhat different problems - power supplies may hide moderate variations in input voltage, while just measuring voltage could be as simple as a divider made with high value resistors (possibly a few in series) and maybe a clamp as backup input protection.
Hi Chris,
I should have been more clear. The way I wrote it is confusing. I'm wanting to use a Omega2 /w AD converter to measure cells of the battery bank. The input to the AD will be done using a divider circuit.
My other problem is to power the Omega2 directly from that same battery bank as efficiently as possible. It's typically not recommended to use power from one of the 12V cells in the battery bank (unbalance), otherwise I could have used any cheap car adapter.
@WereCatf @Ken-Conrad
Awesome, thank you very much for these suggestions!!Bas
