STMicroelectronics VNF1048F→VNF1048FTR

The VNF1048F is an advanced controller for Power MOSFET in high-side configuration, designed for the implementation of an intelligent high-side switch for 12 V, 24 V, and 48 V automotive applications. The control IC is interfaced to a host microcontroller through a 3.3 V and 5 V CMOS-compatible SPI interface and provides protection and diagnostics to the system.

Key features

• AEC-Q100 qualified
• General
  • High-side switch control IC with eFuse protection for 12 V, 24 V, and 48 V automotive applications
  • SPI secondary interface for host control
  • 32-bit ST-SPI interface compatible with 3.3 V and 5 V CMOS level
  • 2 stage charge pump
  • Gate drive for an external MOSFET in high-side configuration
  • High precision uni-directional digital current sense via SPI through an external high-side shunt resistor
  • Input for an NTC resistor to monitor the external MOSFET temperature
  • Very low standby current
  • Robust fail-safe functionality through internal and external controls
  • SPI register lock-out by a dedicated digital input pin
  • Integrated ADC for TJ, VNTC, VOUT, and VDS conversion
• Protections
  • Battery undervoltage shutdown
  • External MOSFET desaturation shutdown configurable via SPI
  • Hard short circuit latch-off configurable via SPI
  • Current vs time latch-off configurable via SPI (fuse-emulation)
  • Device overtemperature shutdown
  • External MOSFET overtemperature shutdown
• Intelligent high current fuse replacement for automotive applications
• Especially, intended for automotive power distribution applications

Applications

• Zonal E/E Architectures (Power Distribution)
• Intelligent high-current fuse replacement
• Smart Actuator & Body Module Driving
• 48V Mild-Hybrid & Commercial Vehicle Systems

Available tools

EV-VNF1048F:

VNF1048F Evaluation Board

The EV-VNF1048F board provides an easy way to connect VNF1048F into the existing system.

Data brief