Renesas Electronics announced a lithium-ion battery management integrated circuit that provides accurate cell voltage and temperature monitoring.
The ISL78714 IC also has cell balancing and system diagnostics to protect 14-cell Li-ion battery packs for hybrid and electric vehicles to help maximize driving time and range, Renesas said Aug. 8.
The IC monitors and balances up to 14 series connected cells to within plus or minus 2mV accuracy. There is also a 14-bit analog to digital converter and up to six external temperature inputs, as well as fault detection and diagnostics for key internal functions.
Board level accuracy is designed to last 15 years. It is specified to operate at -40 degrees Celsius to 105 degrees Celsius.
Mass production quantities are now shipping in a 64-lead package.
The reference design is available online.
Renesas, based in Tokyo, makes microcontrollers, analog, power and SoC products for auto, industrial, office, home and IT applications.