Overview
The DRV8873-Q1, produced by Texas Instruments, is an integrated H-bridge motor driver designed for automotive applications. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards. It operates over a wide input supply range from 4.5 V to 38 V and can drive brushed DC motors with up to 10-A peak current. The DRV8873-Q1 features a single power supply operation and supports various control modes, including PH/EN, PWM, and independent half-bridge control. It is equipped with comprehensive protection features such as undervoltage lockout, overcurrent protection, short-circuit protection, and thermal shutdown. The device also includes spread spectrum clocking to minimize electromagnetic interference (EMI) and is functional safety-capable, making it suitable for safety-critical applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Power Supply Voltage (VM) | 4.5 | - | 38 | V |
| Operating Ambient Temperature (TA) | -40 | - | 125 | °C |
| Operating Junction Temperature (TJ) | -40 | - | 150 | °C |
| Peak Output Current | - | - | 10 | A |
| Internal Logic Regulator Voltage (DVDD) | -0.3 | - | 5.7 | V |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 27.8 | °C/W |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature range of -40°C to +125°C.
- N-channel H-bridge motor driver with four N-channel MOSFETs for bi-directional motor control.
- Comprehensive protection features including undervoltage lockout, overcurrent protection, short-circuit protection, open-load detection, and thermal shutdown.
- Spread spectrum clocking for low electromagnetic interference (EMI).
- Functional safety-capable with documentation available to aid in functional safety system design.
- Integrated current sensing without the need for high-power sense resistors.
- Low-power sleep mode to achieve very low quiescent current draw.
- Support for PH/EN, PWM, and independent half-bridge control modes.
- Fault condition indication via the nFAULT pin and SPI registers.
Applications
- Electronic throttle control
- Exhaust gas recirculation
- Side-view mirror tilt
- e-Shifter
- Air-flow diverter valve control
Q & A
- What is the operating voltage range of the DRV8873-Q1?
The DRV8873-Q1 operates over a voltage range from 4.5 V to 38 V.
- What is the peak output current capability of the DRV8873-Q1?
The DRV8873-Q1 can handle up to 10-A peak current.
- What are the key protection features of the DRV8873-Q1?
The device includes undervoltage lockout, overcurrent protection, short-circuit protection, open-load detection, and thermal shutdown.
- Does the DRV8873-Q1 support functional safety?
- What control modes does the DRV8873-Q1 support?
The device supports PH/EN, PWM, and independent half-bridge control modes.
- How does the DRV8873-Q1 minimize electromagnetic interference (EMI)?
The device features spread spectrum clocking to minimize EMI.
- What is the purpose of the nFAULT pin on the DRV8873-Q1?
The nFAULT pin indicates fault conditions, with detailed information available in the device registers.
- Can the DRV8873-Q1 operate in a low-power mode?
- What is the package type and thermal characteristics of the DRV8873-Q1?
The device is available in a 24-pin HTSSOP package with a thermal pad, and it has a junction-to-ambient thermal resistance (RθJA) of 27.8 °C/W.
- What are some common applications of the DRV8873-Q1?
