Hi to all !
I'm using bq24650 to charge a 6V/10Ah lead acid battery from panel solar or from an external source of 12V+-10%.
The panel solar is 18V at MPP, so I set MPPSET to 17,8V (like demoboard).
When i connect the external source of 12V, I don't have charge current in the battery. If I increase Vin up to 17,8V, the bq24650 works correctly. I think the problem is the voltage in the pin MPPSET : the Bq24650 reduces the charge current until the input voltage increases....but input voltage remains 12V !.
There is a trick to disable MPPSET when bq24650 is supplied from external source, that isn't PV ?
I can accept a dip-switch configuration, to set depending on source of supply
Thanks in advice
Simone