NXP Semiconductors has introduced a battery junction box integrated circuit (IC) that combines critical pack-level functions into a single device.

The MC33777 consolidates essential BMS functions, unlike conventional pack-level monitoring systems that require multiple discrete components, external actuators and processing support, according to the company.

The MC33777 can help protect high-voltage batteries from overcurrent by constantly monitoring the battery current and slope every eight microseconds. It detects and reacts to a wide matrix of configurable events up to 10 times faster than conventional ICs, without waiting for specific current thresholds to be exceeded.

The MC33777‘s fuse-emulation technology also enables the removal of expensive and low-reliability melting fuses from the system, reducing costs for OEMs and Tier 1s, while increasing reliability and enhancing safety for vehicle occupants. EV traditionally deploy melting fuses to disconnect vehicle power in the event of an overload, and their reliability is a critical safety factor.

“Integrating everything that’s required to monitor a battery pack and react quickly to safety-critical events into a single device delivers significant benefits for both OEMs and the end consumer. NXP’s MC33777 marks a new generation of battery junction box ICs for electric vehicles, delivering faster, safer and more affordable management solutions for high-voltage battery packs,” said Jesus Ruiz Sevillano, Director of Product Marketing BMS at NXP.

Source: NXP Semiconductors