Renesas Electronics, a supplier of advanced semiconductor solutions, recently announced its fourth-generation lithium-ion (Li-ion) battery management IC.
ISL78714 management claims to offer unmatched lifetime accuracy, accurate cell voltage and temperature monitoring, along with cell balancing and extensive system diagnostics to protect 14-cell Li-ion battery packs while maximizing driving time and range for hybrid and electric vehicles (HEV/MHEV/PHEV/BEV).
Key Features of ISL78714 Battery Management IC
• Monitors and manages up to 14 cell voltages with ±2mV measurement accuracy
• Robust two-wire daisy chain communications system using capacitor or transformer coupling up to 1 Mbps
• Fully differential cell input range of ±5V accommodates fuel cell and bus bar measurement requirements for aging battery packs
• 15-year board level accuracy (long term drift) of ±6mV @ ±6?
• High diagnostic coverage for cell voltage and temperature measurements
• AEC-Q100 Grade-2 qualified and specified for operation from -40°C to +105°C
A battery management system (BMS) reference design is available, which includes five ISL78714 ICs and a RH850/P1M MCU to form a complete 70-cell evaluation platform for external balancing. The reference design kit provides setup and data logging via CAN and UART. Also provided is a GUI, Altium layout files and low-level drivers for the RH850 peripherals and ISL78714.
Hardware, software, and interface reference manuals are included, along with an EMC report. Together, the reference design kit makes it easy for electric vehicle system designers to port their software to the RH850 MCU, scale to any battery pack size, and save up to one year of development time.
Mass production quantities of the ISL78714 Li-ion battery management IC are available now in a 64-lead TQFP package.
Source: Press Release