Overview
The DRV8872-Q1 device, produced by Texas Instruments, is a brushed DC (BDC) motor driver designed for various automotive applications. It is AEC-Q100 qualified, ensuring its suitability for automotive environments with an ambient operating temperature range of –40°C to +125°C. The device is optimized for driving brushed DC motors, stepper motor windings, or other loads, and it features a wide operating voltage range of 6.8-V to 45-V. It is particularly useful in infotainment systems, HUD projector adjustments, motorized shifter knobs, and piezo horn drivers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage (VM) | 6.8 to 45 | V |
| Peak Current Drive | 3.6 | A |
| Typical RDS(on) (HS + LS) | 565 mΩ | mΩ |
| Operating Ambient Temperature (TA) | –40 to +125 | °C |
| Logic Input PWM Frequency (IN1, IN2) | 0 to 200 | kHz |
| Package Type | 8-Pin HSOP with PowerPAD™ | |
| Package Size | 4.9 × 6 mm | mm |
Key Features
- H-Bridge Motor Driver: Drives one DC motor, one winding of a stepper motor, or other loads.
- PWM Control Interface: Allows for pulse-width modulation to control motor speed.
- Integrated Current Regulation: Limits motor current based on an external sense resistor.
- Low-Power Sleep Mode: Enters sleep mode when both inputs are low, reducing power consumption.
- Fault Status Output Pin (nFAULT): Reports fault conditions such as undervoltage, overcurrent, and thermal shutdown.
- Integrated Protection Features: Includes VM undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), and automatic fault recovery.
- Small Package and Footprint: 8-Pin HSOP with PowerPAD™, measuring 4.9 × 6 mm.
Applications
- Automotive Infotainment: Used in various infotainment systems.
- HUD Projector Adjustment: Drives motors for head-up display projector adjustments.
- Motorized Shifter Knobs: Controls motors in motorized shifter knobs.
- Piezo Horn Drivers: Drives piezo horn drivers in automotive systems.
Q & A
- What is the operating voltage range of the DRV8872-Q1 device?
The operating voltage range is 6.8-V to 45-V.
- What is the peak current drive capability of the DRV8872-Q1?
The device can drive up to 3.6-A peak current.
- What types of motors can the DRV8872-Q1 drive?
The device can drive brushed DC motors, one winding of a stepper motor, or other loads.
- How does the DRV8872-Q1 control motor speed?
The device uses pulse-width modulation (PWM) through its logic inputs to control motor speed.
- What protection features are integrated into the DRV8872-Q1?
The device includes VM undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), and fault reporting (nFAULT) with automatic fault recovery.
- How does the DRV8872-Q1 enter sleep mode?
The device enters sleep mode when both logic inputs (IN1 and IN2) are low for at least 1 ms.
- What is the purpose of the nFAULT pin?
The nFAULT pin reports fault conditions such as undervoltage, overcurrent, and thermal shutdown by pulling low.
- What is the package type and size of the DRV8872-Q1?
The device is packaged in an 8-Pin HSOP with PowerPAD™, measuring 4.9 × 6 mm.
- Is the DRV8872-Q1 AEC-Q100 qualified?
Yes, the DRV8872-Q1 is AEC-Q100 qualified for automotive applications.
- What is the typical RDS(on) of the DRV8872-Q1?
The typical RDS(on) is 565 mΩ for both high-side and low-side MOSFETs.
