Self-controlled cell balancer integrates shunt-type power storage

Rohm's BD14000EFV LSI self-controlled cell balancer IC is now available from Mouser. It has a built-in shunt-type power storage element balancer function that can respond to 4 to 6 cells. All the functions necessary in a cell balancer are built-in making power storage element cell balancing possible only in this LSI. This chip can be used for electric double layer capacitors (EDLC) with cell detection voltage range of 2.4V to 3.1V and power storage capacitors which is important for cell balancers with similar electrical characteristics. The device has a built-in multiple over-voltage detection function and can also detect abnormal mode such as any characteristic deterioration in cells. Also, application-dependent operation can be set since enable control is possible. Applications include renewable energy power storage for automotive, production machinery, and building machinery UPS and other devices that stabilizes power supplies. An evaluation board is also available.