Hi, I'd like to maintenance charge my Ford chassis battery from my motorhome electrical system. This requires a DC-to-DC charger, which are typically expensive. Could a cheap buck/boost board work for this? Like this one? https://www.ebay.com/itm/262693647349
I'm guessing the battery might draw too much current if/when it's discharged and kill the board?
Item Description:
Modules nature: non-isolated Boost Buck (SEPIC)
Rectification: Non-synchronous rectification
Input voltage: DC 3-30V
Output voltage: DC 0.5-30V
Input current: 3A (MAX)
Power: 25W (MAX)
Conversion efficiency: 95% (MAX)
Switching frequency: 150KHz
Output ripple: 40mV (max)
Load regulation: ± 0.5%
Voltage regulation: ± 2.5%
Operating Temperature: -40 ° C to +85 ° C
Dimension: 48 x 23 x 14 mm
Output short circuit protection: Yes.( If short circuit, the output will be 0, until exclude short-circuit )
Typical output, do not need heatsink (reference):
Input 12V----Output 12V/2A; 24W
Input 12V----Output 5V/3A; 15W
Input 12V----Output 13.8V/1.8A; 25W
Input 5V----Output 3.3V/3A; 9.9W
I'm guessing the battery might draw too much current if/when it's discharged and kill the board?
Item Description:
Modules nature: non-isolated Boost Buck (SEPIC)
Rectification: Non-synchronous rectification
Input voltage: DC 3-30V
Output voltage: DC 0.5-30V
Input current: 3A (MAX)
Power: 25W (MAX)
Conversion efficiency: 95% (MAX)
Switching frequency: 150KHz
Output ripple: 40mV (max)
Load regulation: ± 0.5%
Voltage regulation: ± 2.5%
Operating Temperature: -40 ° C to +85 ° C
Dimension: 48 x 23 x 14 mm
Output short circuit protection: Yes.( If short circuit, the output will be 0, until exclude short-circuit )
Typical output, do not need heatsink (reference):
Input 12V----Output 12V/2A; 24W
Input 12V----Output 5V/3A; 15W
Input 12V----Output 13.8V/1.8A; 25W
Input 5V----Output 3.3V/3A; 9.9W