Texas Instruments DRV8242-Q1 Automotive H-Bridge Driver
Texas Instruments DRV8242-Q1 Automotive H-Bridge Driver is an AEC-Q100-qualified fully integrated H-bridge driver for various automotive applications. This device offers voltage monitoring, load diagnostics, and protection features against over-current and overtemperature. The DRV8242-Q1 driver is a bidirectional full-bridge driver with PWM, or phase enable control, and is designed in a BiCMOS high-power process technology node. This automotive driver is ideal for automotive brushed DC motors, solenoids, door modules and seat modules, Body Control Modules (BCM), gas engine systems, and on-board chargers.
The DRV8242-Q1 Driver is available in three variants hardwired interface HW (H) and two SPI interface variants SPI (P) and SPI (S). This driver integrates an N-channel H-bridge, charge pump regulator, high-side current sensing with regulation, current proportional output, and protection circuitry.
Features
- AEC-Q100 qualified for automotive applications:
- -40°C to 125°C, TA temperature grade 1
- Documentation available to aid functional safety system design
- 4.5V to 35V (40V absolute maximum) operating voltage range
- RON_LS + RON_HS = 250mΩ resistance for QFN package
- IOUT maximum = 6A (QFN)
- PWM frequency operation up to 25KHz with automatic dead time assertion
- Configurable slew rate and spread spectrum clocking for low Electromagnetic Interference (EMI)
- Integrated current sense (eliminates shunt resistor)
- Proportional load current output on IPROPI pin
- Configurable current regulation
- Protection and diagnostic features with configurable fault reaction (latched or retry)
- Load diagnostics in both the off-state and onstate to detect open load and short circuit
- Voltage Monitoring on supply (VM)
- Over current protection
- Over temperature protection
- Fault indication on nFAULT pin
- Supports 3.3V and 5V logic inputs
- 1.3μA typical low sleep current at 25°C
- Available in 3 variants - HW (H), SPI (S), or SPI (P)
- Single full bridge using PWM or PH/EN mode
Applications
- Automotive brushed DC motors and solenoids
- Door modules and seat modules
- Body Control Module (BCM)
- Gas engine systems
- On board charger
Schematic
Related Product
Texas Instruments DRV8242S-Q1EVM Evaluation Module
Evaluation module for DRV824-Q1 automotive H-bridge driver and is AEC-Q100 qualified.
Additional Resource
Published: 2023-12-29
| Updated: 2025-05-06