Robust, reliable analog solutions MC33771 and MC33664 Battery Cell Controller and Transformer Physical Layer The MC33664 transformer physical layer and MC33771 battery cell controller solution enable reliable, safe low-cost Li-ion cell control applications with affordable, robust and high-speed isolated communication. AUTOMOTIVE APPLICATIONS FEATURES High-voltage battery management systems (> 800 V) 9.6 V VPWR 61.6 V operation, 75 V transient Isolated 2 Mbps differential communication or 48 V battery management systems 4 Mbps SPI INDUSTRIAL APPLICATIONS 14 x differential cells voltage and stack voltage Energy storage systems (ESS) measurements Uninterrupted power supply (UPS) High-precision current measurement (+/- 1500 A) with low resolution E-bikes, E-scooters Coulomb counter These fully integrated battery monitoring devices are for Synchronized cell voltage/current measurement automotive and industrial mission-critical applications. 100 s skew Battery topology flexibility is supported with compatibility including 48 V batteries with one analog front end (AFE). 7 x ADC/GPIO/temperature sensor inputs Addressable on initialization High-speed and robust daisy chain provides a smart alternative to CAN solutions. Fast data acquisition and Onboard 300 mA passive cell balancing low ohmic communication to the pack controller can be achieved in MOSFETS with diagnostics only 3.0 ms for the pack controller to acquire conversions Low-power modes from 96 cells. Also, determination of individual cell 64-pin LQFP package impedances in one shot is synchronized for cell voltages Designed to support ISO 26262, up to ASIL D and current measurements within 114 s. safety capability With functional verification and diagnostics, the MC33664 transformer physical layer and and MC33771 battery cell controller support ISO 26262 SafeAssure functional safety. Functional verification of cell measure, current measure, cell terminal openings or leakage and ADC precision checks are all performed.Features Benefits Integrated current channel and coulomb counting Reduces bill of materials (BOM) for 48 V battery applications (only one AFE required) Integrated current channel synchronized with cell Determination of individual cell impedances in one shot for improved SoC/SoH prediction voltage measurements Addresses all existing battery management system topologies (centralized, distributed daisy chain, distributed Optional high-speed isolated or SPI communication CAN) High-speed (2.0 Mbit/s) isolated high-speed Allows BOM cost reduction by transition from CAN to daisy chain without compromise on communication differential communication speed Fast data acquisition and communication to Determination of individual cell impedances in one shot, synchronized cell voltages and current measurements pack controller within 114 s Robust against hot plug and random cell connection No pre-damaging of cell and no damaging of devices during customer battery/electronics assembly Strong electrostatic discharge (ESD) protection and electromagnetic compatibility (EMC) avoid the need ESD/EMC robustness for external components Supports ISO 26262 SafeAssure functional safety Has functional verification and diagnostics with single package solution Low-level drivers Simplifies software development and reduces switching cost MC33771 AND MC33664 HIGH-VOLTAGE BATTERY MC33664 AND MC33771 PRODUCTS MANAGEMENT SYSTEM HV BMS 14 cells 33771 14 cells DEVELOPMENT TOOLS: FRDM33771BTPLEVB 33664 FRDM33771BSPIEVB current FRDM33664BEVB 33771 www.nxp.com/battery NXP, the NXP logo and SafeAssure are trademarks of NXP B.V. All other product or service names are the property of their respective owners. 20142018 NXP B.V. Document Number: MC33664FSA4 REV 4
