Power controller IC MC33775

The MC33775A is 14 cell lithium-ion battery cell controller IC designed for automotive applications, such as hybrid and electric vehicle (HEV/EV) and industrial applications, such as energy storage system (ESS). The device measures differential high-precision cell voltages as well as temperatures. It offers ASIL D support for cell voltage, module voltage and temperature measurements. Additionally, the device provides an extensive set of passive cell voltage balancing features to equalize the individual cell voltages across the battery stack. The device offers serial peripheral interface (SPI) and an isolated daisy chain interface for communication with the host MCU. Features General Features From 4 to 14 cells per device ISO 26262 ASIL D support for cell voltage, module voltage and temperature measurements External temperature and auxiliary voltage measurements Module voltage measurement On-board passive cell balancing Up to 300 mA balancing MOSFETs with diagnostics Simultaneous balancing Timer, voltage, temperature, PWM-controlled balancing Isolated daisy chain or SPI communication Diagnostics, functional safety and robustness Product longevity program