Other Parts Discussed in Thread: EMB1428Q, EM1402EVM
Hello,
I am working on a custom active balancing board. Board uses EMB1499 + EMB1428 chipset. Balancing part is made according to the TI's Active Chipset Reference. The circuit is designed to work with 12s battery: there are two stacked sets of EMB1499 + EMB1428. Energy is transfered between selected cell and the whole stack. I can discharge all cells normally (current set to 2.5 - 5.0 A). But when I try to charge cell 6th (top cell in the bottom half-stack), I receive "Secondary side limit" error. Schematics are attached below. Other cells can be charged and discharged successfully.
Regards
Vladislavas
7026.Stack.pdf6366.Bottom Switch Matrix.pdf1185.Bottom_Converter.pdf