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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

Application Circuit Diagram - onsemi FAD31x1MXA Single Channel Floating Gate Drivers

Block Diagram

Block Diagram - onsemi FAD31x1MXA Single Channel Floating Gate Drivers
Publicado: 2024-05-03 | Actualizado: 2024-11-08