Automotive high-side switch controller combines enhanced system-protection and diagnostic features with ST’s I2-t silicon-fuse feature
Its flexibility is ideal for the latest automotive zonal electronic/electrical (E/E) architectures that boost efficiency and reliability while supporting increased electrification and extra functions for smart driving.
Key features
The feature-rich and adaptable VNF1048F has a serial peripheral interface (SPI) for a host microcontroller to configure and monitor system-protection and diagnostic features. These include under-voltage and over-temperature protection, thermal protection for the external high-side MOSFET, desaturation shutdown, and I2-t fuse settings. High-precision digital current sensing is built in. Analog-to-digital converters (ADCs) for monitoring the temperature-sensing thermistor voltage, output voltage, and MOSFET drain-source voltage are also integrated.
Application examples
12 V, 24 V and 48 V automotive applications 
Automotive Power distribution Recommended resources
The EV-VNF1048F board provides an easy way to connect a VNF1048F controller into an existing system to create an intelligent high side switch for 12 V, 24 V and 48 V automotive applications.
Designed to configure and control the VNF1048F high-side switch controller in its evaluation board, the GUI provides complete access to device features with a complete set of diagnostics for easy debugging.
Smart switch controllers for automotive power applications help extend EV range and reduce vehicle carbon footprint
Helping car designers manage more computing power and data/power distribution while optimizing weight and cost, as well as energy management, discover this new approach to fuse management in modern cars.
This whitepaper looks at a new approach to circuit protection and switching in automotive architectures. With decades of automotive electronics knowledge and expertise, ST has developed a new family of intelligent electronic fuses, STi2Fuse, designed to assist OEMs in the journey ahead.
