Overview
The VNF1048FTR, produced by STMicroelectronics, is an advanced controller for Power MOSFETs in high-side configuration. It is designed for the implementation of intelligent high-side switches in 12 V, 24 V, and 48 V automotive applications. This controller integrates various protection and diagnostic features, making it ideal for automotive power distribution systems. It communicates with a host microcontroller via a 3.3 V and 5 V CMOS-compatible SPI interface, enhancing system reliability and efficiency.
Key Specifications
| Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VS_POR_ON | Power-on reset threshold | 2.5 | - | - | V |
| VS_POR_OFF | Power-on shutdown threshold | 2.3 | - | - | V |
| VS_POR_HYST | Power-on reset hysteresis | 0.2 | - | - | V |
| tPWON | Time from power-on to standby | - | - | - | µs |
| tON | Gate turn-on time | - | 4 | - | µs |
| tOFF | Gate turn-off time | - | 2.6 | - | µs |
| VGS_UVLO_6V | Gate undervoltage lockout (VS = 6 V) | 5 | - | - | V |
| VGS_UVLO_10V | Gate undervoltage lockout (VS > 10 V) | 8.5 | - | - | V |
| VHSC_THRS_RANGE | Hard short circuit protection threshold range | 20 | - | 160 | mV |
| Package | - | - | - | QFN32L | - |
| Operating Temperature | - | - | - | - | °C |
Key Features
- High-side switch control IC: Designed for 12 V, 24 V, and 48 V automotive applications with integrated eFuse protection.
- SPI Interface: 3.3 V and 5 V CMOS-compatible SPI interface for host microcontroller communication.
- Protection Features: Includes battery undervoltage shutdown, external MOSFET desaturation shutdown, hard short circuit latch-off, current vs time latch-off (fuse-emulation), device overtemperature shutdown, and external MOSFET overtemperature shutdown.
- Diagnostic Capabilities: Integrated ADC for monitoring temperature, output voltage, and MOSFET drain-source voltage. High precision uni-directional digital current sense via SPI.
- Low Standby Current: Very low standby current to minimize power consumption.
- Fail-Safe Functionality: Robust fail-safe functionality through internal and external controls.
- I2-t Silicon Fuse Technology: Provides fast-acting, resettable, and reliable over-current protection, simplifying vehicle wiring harnesses and reducing weight.
- AEC-Q100 Qualified: Ensures compliance with automotive reliability standards.
Applications
The VNF1048FTR is especially intended for automotive power distribution applications, supporting the latest automotive zonal electronic/electrical (E/E) architectures. It is suitable for various automotive systems that require high reliability, efficiency, and advanced protection features, such as smart driving systems and electrified vehicles.
Q & A
- What is the VNF1048FTR used for?
The VNF1048FTR is used as an advanced controller for Power MOSFETs in high-side configuration for 12 V, 24 V, and 48 V automotive applications, providing intelligent high-side switch functionality with integrated protection and diagnostic features.
- What type of interface does the VNF1048FTR use for communication?
The VNF1048FTR uses a 3.3 V and 5 V CMOS-compatible SPI interface for communication with a host microcontroller).
- What are the key protection features of the VNF1048FTR?
The key protection features include battery undervoltage shutdown, external MOSFET desaturation shutdown, hard short circuit latch-off, current vs time latch-off (fuse-emulation), device overtemperature shutdown, and external MOSFET overtemperature shutdown).
- How does the VNF1048FTR monitor temperature and voltage?
The VNF1048FTR includes integrated ADCs for monitoring the temperature-sensing thermistor voltage, output voltage, and MOSFET drain-source voltage).
- What is the significance of I2-t silicon fuse technology in the VNF1048FTR?
The I2-t silicon fuse technology provides fast-acting, resettable, and reliable over-current protection, simplifying vehicle wiring harnesses and reducing weight).
- What is the package type of the VNF1048FTR?
The VNF1048FTR is available in a QFN32L package).
- Is the VNF1048FTR AEC-Q100 qualified?
Yes, the VNF1048FTR is AEC-Q100 qualified, ensuring compliance with automotive reliability standards).
- What are the benefits of using the VNF1048FTR in automotive applications?
The benefits include enhanced system protection and diagnostics, improved efficiency, reduced weight, and support for increased electrification and smart driving functions).
- How does the VNF1048FTR contribute to vehicle performance?
The VNF1048FTR contributes to improved vehicle performance by reducing weight, which extends driving range and reduces CO2 emissions).
- Where can I find more detailed specifications and documentation for the VNF1048FTR?
More detailed specifications and documentation can be found on the STMicroelectronics website or through local ST sales offices).
