We are looking for a PFC & LLC power supply which are going to use to charge an array of 18 PCS of lead-acid batteries with a 13.8V nominal voltage each (total voltage 248VDC and maximum power of 600W). We would like to have the option to adjust the voltage and the current of your power supply from our board. We could use a 0-5V input for the voltage adjustment and a 0-5V input for current limit adjustment. We could also accept a RS232 interface to adjust voltage an current, if you are able to provide.