MC33772BTA2AE

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 Automotive Applications }} High-voltage battery management systems (200 V– +800 V) }} 14 V Li-ion battery management systems Industrial Applications }} Energy storage systems (ESS) With functional verification and diagnostics, the MC33772 and MC33664 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 }} Uninterrupted power supply (UPS) }} 5.0 V (7.0 V for TPL) < VPWR < 30 V operation, 42 V transient for TPL communication }} E-bikes, e-scooters }} Isolated 2 Mbps differential communication or 4 Mbps SPI This solution addresses all existing battery management system topologies that support centralized, distributed daisy chain as well as high-speed and robust daisy chain. It is compatible with 14 V Li-ion batteries with one analog front end (AFE) and optional high-speed isolated or SPI communications. These fully integrated battery monitoring devices are for automotive and industrial mission-critical applications. }} Up to six cell voltage (differential) measurements and stack voltage measurements High-speed and robust daisy chain is used as an alternative to CAN solutions. Fast data acquisition and communication to the pack controller can be achieved in only 0.86 ms for the pack controller to acquire conversions from six cells, 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 µs. }} Designed to support ISO 26262, up to ASIL D safety capability }} Synchronized cell voltage/current measurement with coulomb counting }} Seven ADC/GPIO/temperature sensor inputs }} Addressable on initialization }} Onboard 300 mA passive cell balancing low ohmic MOSFETS with diagnostics }} Low-power modes }} 48-pin LQFP package EXAMPLE: TYPICAL 14 V BATTERY MANAGEMENT SYSTEM CHIPSET FOR SPI COMMUNICATION MC33772 AND MC33664 HIGH-VOLTAGE BATTERY MANAGEMENT SYSTEM FOR TPL COMMUNICATION MC33772 AND MC33664 BLOCK DIAGRAM VPWR1 MC33772 VPWR1 VPWR2 CT6 CB6 CB6:5_C RDTX _OUT+ RDTX_OUT- CTn CBn CT1 CB2:1_C CB1 CTREF ISENSE+ Current Measure ISENSE- Battery Reference GNDSUB GNDFLG RDTX_OUT+ RDTX_OUT- CT6 CB6.5_C CT5 Battery Reference CGND VPRE VANA 6 Cell Voltage Messure CTn CBn Battery Reference AGND DGND FAULT SDA SDL SPI_COM_EN VCP GNDCP RESET CSB VCOM CB6 VCOM VCOM CT5 6 Cell Voltage Measure MC33772 VPWR2 EEPROM CT1 CBB2:1_C CB1 MCU CTref GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 VCOM GPIOx CSB MISO MOSI SCLK GNDFLG VPWR1 CT6 CB6 CB6.5_C CT5 Battery Reference 6 Cell Voltage Messure CTn CBn CT1 CBB2:1_C CB1 CTref ISENSE+ Cell Current Messure ISENSE+ Battery Reference GNDREF GNDFLG Battery Reference T1 1:1 VCOM GPIO4 GPIO5 GPIO6 GNDREF VPWR2 Battery Reference Battery Reference GPIO0 GPIO1 GPIO2 GPIO3 ISENSEBattery Reference VCOM SCLKNDTX_IN- ISENSE+ VPRE SO SI/RDTX _IN+ SCLK/RDTX _IN- CGND VANA AGND DGND Fault SDA SDL SC CSE SPI_COM_EN RESET SIRDTX_IN+ Battery Reference MC33772 RDTX_OUT+ RDTX_OUTVCOM VCOM AGND DGND Fault SDA SDL SC CSE SPI_COM_EN RESET SIRDTX_IN+ Battery Reference Battery Reference T1 1:1 SCLKNDTX_IN- Description FRDM33772BSPIEVB (SPI mode) MC33772 evaluation board FRDM33772BTPLEVB (TPL mode) MC33772 evaluation board FRDM33664BEVB (TPL mode) MC33664 evaluation board MCU T1 1:1 SPI1 MC33664 SPI2 VCOM GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 DEVELOPMENT TOOLS Kit Number Battery Pack Controller Battery Reference CGND VANA Battery Reference 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 voltage measurements Determination of individual cell impedances in one shot for improved SoC/SoH prediction Optional high-speed isolated or SPI communication Addresses all existing battery management system topologies (centralized, distributed daisy chain, distributed CAN) High-speed (2 Mbit/s) isolated high-speed differential communication Allows BOM cost reduction by transition from CAN to daisy chain without compromise on communication speed Fast data acquisition and communication to pack controller Significant improvement of battery diagnostics 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 ESD/EMC robustness avoids external components for robustness protection (BOM reduction, board space reduction) Supports ISO 26262 SafeAssure® functional safety with single package solution Has functional verification and diagnostics 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. © 2015–2018 NXP B.V. Document Number: MC33772FSA4 REV 4