Cell Balancing and Safety: Intersil's ISL9208, ISL9216 and ISL9217


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iDesign with Anna Logue Anna Logue teaches Slide Rule Lou a thing or two about designing multi-cell balancing analog front ends for li-ion battery packs.


Prolonging Life in Multiple Cells Through Cell Balancing The past 18-24 months have seen a dramatic increase in the number of high voltage battery packs that are using lithium based cells. These new lithium based battery packs are replacing previous generations of battery packs that were typically nickel cadmium or lead acid and the new packs are delivering improved performance, longer usable life between charges, and more charge cycles over their lifetime. These types of packs are becoming standard equipment in applications such as power tools, e-bikes, light delivery vehicles, uninterruptible power supplies, mobile medical and diagnostic equipment and other even higher power consuming products such as hybrid and plug-in hybrid electric vehicles. Intersil’s Analog Front Ends for Multi-Cell Balancing ISL9208: Multi-Cell Li-ion Battery Pack OCP/Analog Front End ISL9216: 8 to 12 Cell Li-Ion Battery Overcurrent Protection and Analog Front End Chip Set ISL9217: 8 to 12 Cell Li-Ion Battery Overcurrent Protection and Analog Front End Chip Set Multi-Cell Balancing Selection Table Learn more about using these devices in recent Intersil application notes. Designing Multi-Cell Li-ion Battery Packs Using the ISL9208 Analog Front End Designing Multi-Cell Li-ion Battery Packs Using the ISL9216, ISL9217 Analog Front End Look for Mike Coletta’s article in October’s issue of Power System Design Europe.