MC33772C Li-Ion Battery Cell Controller

NXP’s MC33772C is a six-channel Li-ion battery cell controller (BCC) IC designed for automotive and industrial battery management systems (BMS) applications, offering reliable, safe, and BOM-optimized BMS.

The device manages from three to six cells or is used as a battery junction box (BJB) controller. It features configurable averaging of cell voltage measurements (lower BOM) and onboard coulomb counting. Its optimized transformer physical layer (TPL) communication interface supports loop-back topologies with up to 63 nodes.

The MC33772C BCC supports ISO 26262 with single-chip ASIL C and up to ASIL D functional safety capability.

The evaluation boards (EVB) below feature the MC33772C six-channel battery cell controller for automotive and industrial Li-ion battery applications. This IC supports cell voltage measurement, passive cell balancing, and GPIOs. These EVBs are designed to support customer development and evaluation. The devices can be connected to NXP's six-cell battery emulator or a customer Li-ion battery module with three to six cells in series. On the FRDM33772CSPEVB, the battery cell information is transferred to the microcontroller unit (MCU) through an SPI interface. While on the KIT33772CTPLEVB evaluation board, battery cell information is transferred to the MCU through an isolated differential communication bus using the FRDMDUAL33664EVB. Up to 63 KIT33772CTPLEVBs can be connected within a daisy chain.