A high efficiency bidirectional multicell battery balancer has been released by Linear Technology for equalising cell state of charge (SoC) in a series-connected ­battery stack.

The LTC3300-1 can enhance battery performance by transferring charge to or from adjacent cells in order to bring ­mismatched cells into SoC balance within the stack.  

By redistributing charge throughout the stack, this device compensates for lost capacity due to the weakest cells, enabling faster charging and extending the run time and usable lifetime of the battery stack.  

This device operates as a fault-protected controller IC for transformer-based bidirectional active balancing. The part utilises a nonisolated bidirectional ­synchronous flyback topology to balance up to six series-connected cells.

Linear Technology