Convert 24V 36V 48V 72V to 12V high current
60V 48V 36V to 12V 3A 5A 8A DC DC Converter 48VDC to 12VDC Voltage Converter Step Down Buck Car Truck Vehicle Power Supply

This circuit can work in wide voltage range. From 24V to 72V, Output 12V - 30A. Can use it to charge battery from solar panel. It dont have overcurrent protection. If you want, I can add overcurrent and overheat protection in V2 version.

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Diagram here : File 79 in [ Ссылка ]
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All my projects are free, I design them on EAGLE 6.0. I uploaded it to Google drive. You need to use a web browser to download the file and open the file with winrar software (extract) on the PC. Open schematic file (.SCH) and PCB file (.BRD) with EAGLE software.
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