onsemi FAD31x1MXA Single Channel Floating Gate Drivers
onsemi FAD31x1MXA Single Channel Floating Gate Drivers are automotive (AEC-Q100) gate drivers suitable for driving high-speed power MOSFETs up to 110V. Designed with SOI technology, these drivers are ideal for applications that require noise immunity against severe negative transients and ground offset up to -80V. The FAD3151MXA and FAD3171MXA versatile drivers offer features like desat detection, soft shutdown, fault reporting capability, UVLO protection, and a charge pump.
The onsemi FAD31x1MXA drivers feature integrated desaturation detection to protect power switches during short-circuit and over-current conditions. The drivers are also equipped with a soft shutdown feature, which initiates a soft shutdown of driver outputs upon desat detection, thus preventing possible overvoltage across power MOSFETs during heavy-load conditions. A bidirectional fault reporting pin generates a fault output during desat and under-voltage lockout (UVLO) conditions. The bidirectional nature of the fault-reporting pin allows the driver to respond to external fault commands, thereby facilitating fault communication across the system.
In addition, the FAD3171MXA has an integrated charge pump to support 100% duty cycle operation of high-side MOSFETs.
Features
- Single channel gate driver with 110V floating vs capability
- Up to -80V negative transient capability
- 2.5A output source and sink current
- MOSFET drain-source desaturation detection with soft shutdown
- Integrated charge pump to support 100% duty cycle operation (FAD3171MXA only)
- Under-voltage lockout for both input logic and output stage
- Bi-directional fault reporting pin
- High-speed driver with short propagation delay
- dVs/dt immune to ±50V/ns minimum
- 3.3V and 5V input logic compatible
- Up to VDD swing on input pins
- SOIC-8 package
- Automotive qualified for AEC-Q100
- Lead-free and RoHS-compliant
Applications
- Gate driver for 80V and 100V MOSFETs
- 48V belt starter generator
- 48V auxiliary motor control (A/C compressors, e-turbo, and more)
- 48V battery switches
- 48V DC-DC converters
- PTC heater, active discharge circuit, and more
Videos
Application Schematic
Block Diagram
