Texas Instruments DRV3256-Q1 Automotive-Grade Gate Driver Unit
Texas Instruments DRV3256-Q1 Automotive-Grade Gate Driver Unit
The Texas Instruments DRV3256-Q1 automotive grade gate driver is a highly integrated three-phase gate driver for 48V automotive motor drive applications. The device is specifically designed to provide 2A peak pull current and 2.5A peak fill current gate drive current, as well as 90V MOSFET transient overvoltage support to support high power motor drive applications. The efficient bootstrap architecture minimizes power loss and gate driver self-heating. The charge pump allows the gate driver to support 100% PWM duty cycle control.
The Texas Instruments DRV3256-Q1 features a variety of monitoring, diagnostic, and protection features to support robust motor drive system designs. A highly configurable active short circuit feature supports integration of selected external MOSFETs for fast response to system faults. No external components are required for this feature. Optionally, three or one low-side shunt amplifiers are available to support resistor-based low-side current detection.
Features
Meets AEC-Q100 standards for automotive applications
Device ambient temperature rating 0: -40°C to +150°C
(HBM) Electrostatic discharge (ESD) classification level 2
Device Charge Device Model (CDM) ESD Classification Class C4B
For Functional Safety Standards
Developed for functional safety applications
Documentation to assist in ISO 26262 system design will be provided at production release
For system capabilities up to ASIL-D
Three N-channel half-bridge gate drivers
2A/2.5A maximum peak gate drive current
Power supply architecture optimized for 48V applications
Separate 12V/48V power supply architecture
95V DC link power supply (DHCP) transient absolute maximum voltage rating
105V bootstrap voltage to support 90V MOSFET operating voltage range
Charge pump bootstrap supports 100% duty cycle
Integrated 1 (DRV3256A-Q1) or 3 (DRV3256-Q1) current shunt amplifiers
Integrated configurable active short circuit (ASC) function
Supports low-side (DRV3256A-Q1) or low-side and high-side (DRV3256-Q1/DRV3256B-Q1) ASC
Supports high-side and low-side ASC
Device pin control available
Fault handling capability
Serial Peripheral Interface (SPI) with CRC
Support for 3.3V and 5V logic inputs
Advanced protection features
Battery voltage monitor
MOSFET VDS overcurrent monitor
R shunt overcurrent monitor
MOSFET VGS Gate Fault Monitor
Analog Built-in Self-Test
Internal Voltage Regulator and Clock Monitor
Device Overheat Alarm and Shutdown
Fault Status Indicator Pins
Applications
Automotive 48V mild hybrid motor drivers
Integrated starter generator, motor generator
Electric power steering
HVAC Compressors and Fans
Transmission control and drive
Oil, transmission and water pump
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