VNF1048F Series
High-side switch Controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications
Manufacturer: STMicroelectronics
Catalog
High-side switch Controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications
Key Features
• 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
Description
AI
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.