Hi,
I have to charge a 24V lead acid battery stack but for that, the output voltage has to reach 29V (which is above the limit for the BQ24650) .
The input voltage is also high. Two solar panel in series with Vmmpt = 17.2V (25C) each. The reason of combining these in series is that I have to use the same battery stack (24V) as for a wind turbine, which has better power output capabilities at that voltage. Furthermore, the BQ24650 is a buck converter so I need an input voltage higher than those 29V.
Is there a way to achieve higher voltages? (Both at the input and output by adding an external circuit, ICs, etc).
Also, I don't understand the "Solar Cell Half Panel" label on VIN. http://www.ti.com/general/docs/datasheetdiagram.tsp?genericPartNumber=BQ24650&diagramId=SLUSA75
Thank you!