Designing a charger for a 7 cell Li-ion battery pack

[srijan]

I need to design a charger for a 7 cell battery back.
The output voltage must be constant at around 30 V and the charger current during the constant current charging phase must be 10 A.

Using switching regulators a constant output voltage of 30 V seems feasible but I can't seem to find anything that drives 10 A.

Once the output voltage has charged till about 29.3 V the and the current has decayed till about 0.1 A (I don't know how to take this into account), the charging should stop.

 

[grieblm]

Look at the Linear Tech LTC4000 controller in combination with the LT3845 regulator. You'll also need external FETs to handle this much power.