Brushless DC Drivers

Automotive Three-Phase MOSFET Driver with ASIL Compliance, Diagnostics, and Current Sensing

A4911

Markets Served

The A4911 is designed for safety-critical automotive applications requiring ASIL compliance. It provides integrated current sense amplifiers, extensive diagnostics, and a programmable gate drive for robust and reliable motor control.

Product Details

Product Details

Top Features

ISO26262 Developed and Certified to ASIL-D
150°C Ambient operation
165°C minimum thermal shutdown
Qualified to Q100 Grade 0
Robust Gate Drive Design allowing up to -18V Negative Transients
Extended diagnostics
- Gate drive monitors
- Overvoltage detectors
- Logic level, phase-state output
- Open load detect
Programmable gate drive outputs
Adjustable drive strength for slew rate limitation
- Adjustable output voltage level for gate drive limitation
Programmable sense amplifiers
- Adjustable gain
- Adjustable offset
- No external components required
- Low offset drift
SPI read back & parity bit

Target Application

Part Number Specifications and Availability

View Full Specification Details

A4911KEVTR-J-1

supply_voltage_min_v: 5.5
supply_voltage_max_v: 50
architecture: Gate Driver
control_interface: SPI
rds_on: 20
commutation: Universal
motor_positioning_method: External
sleep_current: 10
current_sense_amplifiers: 3
temperature: -40°C to 125°C, -40°C to 150°C
package: 48-Pin QFN
market: Automotive
typical_load_current_a: 10-25

A4911KJPTR-T

supply_voltage_min_v: -
supply_voltage_max_v: -
architecture: -
control_interface: -
rds_on: -
commutation: -
motor_positioning_method: -
sleep_current: -
current_sense_amplifiers: -
temperature: -
package: -
market: -
typical_load_current_a: -

A4911KJPTR-T-1

supply_voltage_min_v: 5.5
supply_voltage_max_v: 50
architecture: Gate Driver
control_interface: SPI
rds_on: 20
commutation: Universal
motor_positioning_method: External
sleep_current: 10
current_sense_amplifiers: 3
temperature: -40°C to 125°C, -40°C to 150°C
package: 48-Pin LQFP
market: Automotive
typical_load_current_a: 10-25

Design Tools

A4911

Software Portal

Technical Documentation

Mosfet Slew-Rate Control with an Allegro Smart Gate Driver

Application Note

Mosfet Slew-Rate Control with an Allegro Smart Gate Driver

Advanced Negative Voltage Transient Test for Gate Drivers in Automotive Applications

Application Note

Advanced Negative Voltage Transient Test for Gate Drivers in Automotive Applications

Estimating Maximum MOSFET Switching Frequency

Application Note

Estimating Maximum MOSFET Switching Frequency

Reverse Battery Protection Scheme for Automotive Applications

Technical Article

Reverse Battery Protection Scheme for Automotive Applications