Texas Instruments DRV814x-Q1 Automotive Half-Bridge Drivers
Texas Instruments DRV814x-Q1 Automotive Half-Bridge Drivers are fully integrated half-bridge drivers intended for a wide range of automotive applications. Designed in a BiCMOS high-power process technology node, this monolithic family of devices in a power package offers excellent power handling and thermal capability. It also provides ease of layout, compact package size, accurate current sense, EMI control, robustness, and diagnostic capability. This family provides an identical pin function with scalable RON (current capability) to support different loads.
The devices integrate an N-channel half-bridge, high-side current sensing with regulation, a charge pump regulator, current proportional output, and protection circuitry. A low-power sleep mode is provided to achieve low quiescent current. The devices offer voltage monitoring, load diagnostics, and protection features against over-current and over-temperature. Fault conditions are indicated on the nFAULT pin. DRV8143-Q1 and DRV8145-Q1 are available in three variants - hardwired interface: HW (H) and two SPI interface variants: SPI (P) and SPI (S), with SPI (P) for externally supplied logic supply and SPI (S) for internally generated logic supply. Texas Instruments DRV8144-Q1 is available only in SPI (S) and HW (H) variants. The SPI interface variants offer greater flexibility in fault observability and device configuration.
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 abs. max) operating range
- SPI (S) or HW (H) variant in the VQFN-HR package
- (RON_LS + RON_HS: 23.6mΩ)
- IOUT Max = 30A
- PWM frequency operation up to 125KHz 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 on-state to detect open load and short circuit
- Voltage monitoring on supply (VM) and charge pump (VCP)
- Over current protection
- Over temperature protection
- Fault indication on nFAULT pin
- Supports 3.3V, 5V logic inputs
- Low sleep current - 1µA typical at 25°C
- Device family comparison table
Applications
- Automotive brushed DC motors, solenoids
- Onboard chargers
- Body control modules (BCM)
- Door modules, wiper modules, trunk and seat modules
- Fuel, water, and oil pumps
Videos
Simplified Schematic
Development Tools
Texas Instruments DRV8143P-Q1LEVM Driver Evaluation Module
Showcases the features and performance of the DRV8145P-Q1, a 40V, 20A half-bridge driver.
Texas Instruments DRV8143H-Q1EVM Driver Evaluation Module
Module showcases the performance and features of the DRV8144H HotRod™ Half-Bridge Driver.
Texas Instruments DRV8144H-Q1EVM Evaluation Module
Designed to evaluate a fully integrated automotive half-bridge DRV8144H motor driver.
Texas Instruments DRV8145P-Q1EVM Driver Evaluation Module
Module showcases the performance and features of the DRV8145P-Q1 Half-Bridge Driver.