Robust, reliable analog solutions MC33772 and MC33664 Battery Cell Controller and Transformer Physical Layer The MC33772 battery six-cell controller and MC33664 transformer physical layer solutions enable reliable, safe and bill of materials (BOM) optimized Li-ion cell control applications with low-cost, robust, high-speed isolated communication. TARGET APPLICATIONS With functional verification and diagnostics, the MC33772 and MC33664 support ISO 26262 SafeAssure functional Automotive Applications safety. Functional verification of cell measure, current High-voltage battery management systems (200 V+800 V) measure, cell terminal openings or leakage and ADC 14 V Li-ion battery management systems precision checks are all performed. Industrial Applications FEATURES Energy storage systems (ESS) 5.0 V (7.0 V for TPL) < V < 30 V operation, 42 V transient PWR Uninterrupted power supply (UPS) for TPL communication E-bikes, e-scooters Isolated 2 Mbps differential communication or 4 Mbps SPI This solution addresses all existing battery management Up to six cell voltage (differential) measurements and stack voltage measurements system topologies that support centralized, distributed daisy chain as well as high-speed and robust daisy chain. Synchronized cell voltage/current measurement with It is compatible with 14 V Li-ion batteries with one analog coulomb counting front end (AFE) and optional high-speed isolated or SPI Seven ADC/GPIO/temperature sensor inputs communications. These fully integrated battery monitoring Addressable on initialization devices are for automotive and industrial mission-critical Onboard 300 mA passive cell balancing low ohmic applications. MOSFETS with diagnostics High-speed and robust daisy chain is used as an alternative Designed to support ISO 26262, up to ASIL D safety to CAN solutions. Fast data acquisition and communication capability to the pack controller can be achieved in only 0.86 ms for Low-power modes the pack controller to acquire conversions from six cells, 48-pin LQFP package seven external temperatures, the current and coulomb counter. The MC33772 controller can work down to three cells and up to six cells. Also, determination of individual cell impedances in one shot is synchronized for cell voltages and current measurements at 113 s.EXAMPLE: TYPICAL 14 V BATTERY MANAGEMENT MC33772 AND MC33664 HIGH-VOLTAGE BATTERY SYSTEM CHIPSET FOR SPI COMMUNICATION MANAGEMENT SYSTEM FOR TPL COMMUNICATION MC33772 AND MC33664 BLOCK DIAGRAM MC33772 VPWR1 RDTX OUT+ MC33772 V PWR2 RDTX OUT- V COM RDTX OUT+ V CT6 V PWR1 COM RDTX OUT- CB6 V V PWR2 COM CGND Battery CB6.5 C Reference CT6 V VANA COM CT5 Battery AGND Reference CB6 DGND Battery CGND Fault 6 Cell CB6:5 C CTn Reference Voltage SDA V PRE CBn SDL CT5 Messure SC V ANA Battery CSE Battery CT1 Reference AGND SPI COM EN T1 CTn DGND Reference CBB2:1 C RESET 6 Cell 1:1 SIRDTX IN+ CB1 CBn FAULT Voltage MCU SDA CTref SCLKNDTX IN- Measure EEPROM V SDL COM ISENSE+ SPI COM EN V GPIO0 CT1 PRE GPIO1 VCP GNDCP GPIO2 CB2:1 C ISENSE- GPIO3 RESET GPIOx CB1 GPIO4 CSB CSB GNDREF Battery GPIO5 CTREF SO GNDFLG MISO Reference GPIO6 SI/RDTX IN+ MOSI ISENSE+ Battery SCLK/RDTX IN- SCLK MC33772 Reference V PWR1 Current V C OM RDTX OUT+ GPIO0 V Measure PWR2 RDTX OUT- V COM GPIO1 CT6 ISENSE- V GPIO2 COM CB6 GPIO3 Battery Battery Pack Controller CGND CB6.5 C Reference GPIO4 GNDSUB V ANA GPIO5 CT5 Battery Battery GN DFLG AGND GPIO6 Reference DGND Reference 6 Cell Fault Battery CTn SDA Voltage Reference CBn Messure SDL MCU SC Battery CSE CT1 Reference SPI COM EN T1 T1 CBB2:1 C RESET 1:1 1:1 SPI1 SIRDTX IN+ CB1 MC33664 CTref SPI2 SCLKNDTX IN- V ISENSE+ COM GPIO0 Cell GPIO1 Current GPIO2 Messure GPIO3 ISENSE+ GPIO4 GNDREF GPIO5 Battery GNDFLG GPIO6 Reference Battery Reference DEVELOPMENT TOOLS Kit Number Description FRDM33772BSPIEVB (SPI mode) MC33772 evaluation board FRDM33772BTPLEVB (TPL mode) MC33772 evaluation board FRDM33664BEVB (TPL mode) MC33664 evaluation board MC33772 AND MC33664 PRODUCT DIFFERENTIATION Features Benefits Integrated current channel and coulomb counting Reduces BOM for 14 V Li-ion 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, Optional high-speed isolated or SPI communication distributed CAN) High-speed (2 Mbit/s) isolated high-speed Allows BOM cost reduction by transition from CAN to daisy chain without compromise on differential communication communication speed Fast data acquisition and communication to Significant improvement of battery diagnostics pack controller Hot plug and random cell connection robustness No pre-damaging of cell and no damaging of devices during customer battery/electronics assembly ESD/EMC robustness avoids external components for robustness protection (BOM reduction, board ESD/EMC robustness space reduction) Supports ISO 26262 SafeAssure functional safety Has functional verification and diagnostics with single package solution PRODUCT LONGEVITY PROGRAM These products are/or may be supported by NXP s Product Longevity Program. For terms and conditions and to obtain a list of available products, visit www.nxp.com/ProductLongevity. 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. 20152018 NXP B.V. Document Number: MC33772FSA4 REV 4