Controller chips for 3- to 14-cell Li-ion batteries

Freescale Semiconductor today introduced the MC33772 3- to 6-cell lithium-ion battery cell controller. Along with the previously announced MC33771 14-cell battery cell controller, the MC33772 covers full range of single chip 3- to 14-cell solutions. MC33771 and MC33772 supports broad array of battery chemistries, including lithium iron phosphate, lithium nickel manganese cobalt oxide, lithium titanate, and lithium polymer. MC33771 14-cell battery cell controller, the MC33772 feature advanced diagnostics and functional verification supporting ISO 26262 ASIL-C requirements within a single chip. "Lead-acid automotive batteries are increasingly being replaced by Li-ion chemistries to reduce weight, increase reliability and boost energy efficiency for engine start-stop systems and energy recuperation technologies. Recent advances in Li-ion battery chemistry for cold temperature operation and cold cranking power now enable Li-ion batteries to displace lead-acid even as the starter battery. As a result, the inherent challenges of overcharge, overheating and internal short circuit are increasingly managed by electronics. To maintain safe operating conditions and ensure system-wide control of the battery, next-generation battery cell controllers like Freescale’s must provide accurate, reliable battery diagnostics and high speed communication of status. " explains Freescale in ...