Overview
The DRV8873-Q1 from Texas Instruments is an integrated H-bridge motor driver designed specifically for automotive applications. This device is AEC-Q100 qualified, ensuring it meets the stringent requirements for automotive use. It operates over a wide temperature range from -40°C to +125°C, making it suitable for various automotive environments. The DRV8873-Q1 drives brushed DC motors with a peak current of up to 10 A and supports a single power supply voltage range of 4.5 V to 38 V. It features a PH/EN or PWM interface for simple control and includes independent half-bridge control for driving two solenoid loads. The device is equipped with comprehensive protection features, including overcurrent, short-circuit, and overtemperature protection, as well as fault condition indicators.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Voltage (VM) | 4.5 | - | 38 | V |
| Logic Level Input Voltage | 0 | - | 5.5 | V |
| Operating Ambient Temperature (TA) | -40 | - | 125 | °C |
| Operating Junction Temperature (TJ) | -40 | - | 150 | °C |
| Peak Output Current | - | - | 10 | A |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 27.8 | °C/W |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade of -40°C to +125°C.
- N-channel H-bridge motor driver with four N-channel MOSFETs for bi-directional motor control.
- Integrated current sensing without the need for high-power sense resistors.
- Comprehensive protection features including undervoltage lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature protection.
- Low-power sleep mode to minimize quiescent current draw.
- Spread spectrum clocking for reduced electromagnetic interference (EMI).
- Functional Safety-Capable with documentation to aid in functional safety system design.
- SPI or hardware interface for control and fault monitoring.
Applications
- Electronic throttle control
- Exhaust gas recirculation
- Side-view mirror tilt
- e-Shifter
- Air-flow diverter valve control
Q & A
- What is the DRV8873-Q1 used for?
The DRV8873-Q1 is used to drive brushed DC motors in automotive applications.
- What is the operating temperature range of the DRV8873-Q1?
The operating temperature range is from -40°C to +125°C.
- What is the peak output current of the DRV8873-Q1?
The peak output current is up to 10 A.
- What protection features does the DRV8873-Q1 include?
The device includes protection features such as undervoltage lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature protection.
- How does the DRV8873-Q1 minimize electromagnetic interference (EMI)?
The device uses spread spectrum clocking to minimize EMI.
- What interface options are available for controlling the DRV8873-Q1?
The device can be controlled via a PH/EN or PWM interface, and it also supports SPI for more detailed control and fault monitoring.
- Is the DRV8873-Q1 suitable for functional safety applications?
Yes, the device is Functional Safety-Capable, and documentation is available to aid in functional safety system design.
- What is the package type of the DRV8873-Q1?
The device is available in a 24-pin HTSSOP package with a thermal pad.
- How does the DRV8873-Q1 handle fault conditions?
Fault conditions are indicated by the nFAULT pin and detailed information is available in the device registers.
- Does the DRV8873-Q1 support low-power operation?
Yes, the device has a low-power sleep mode to minimize quiescent current draw.
