Pololu DRV8256E Single Brushed DC Motor Driver Carrier
Pololu DRV8256E Single Brushed DC Motor Driver Carrier
Pololu DRV8256E Single Brushed DC Motor Driver Carrier
The Pololu DRV8256E is a compact single brushed DC motor driver carrier featuring the Texas Instruments DRV8256E integrated circuit, designed to drive one brushed DC motor with up to 3A continuous current and 5A peak current capability. Robotics engineers, embedded systems developers, and automation technicians rely on this carrier for precise motor speed and direction control in applications requiring compact form factor and high reliability. This driver solves the challenge of interfacing microcontroller PWM outputs with high-current DC motors while providing integrated protection features including overcurrent limiting and thermal shutdown.
Product Overview
The DRV8256E motor driver carrier utilizes the advanced DRV8256E H-bridge integrated circuit from Texas Instruments, which incorporates integrated MOSFETs and sophisticated control logic in a compact package. The driver operates from a 6.5V to 28V supply voltage range, making it compatible with various power sources including 12V and 24V industrial systems. The H-bridge topology enables independent control of motor direction and speed through PWM signals, allowing smooth acceleration profiles and bidirectional operation essential for robotic applications. The carrier board includes convenient header connectors for motor connections and control signals, simplifying integration into larger systems.
Key technical advantages of this design include integrated current limiting that protects both the driver IC and connected motor from damage during stall conditions, automatic thermal shutdown protection that disables the driver if junction temperature exceeds safe limits, and low on-resistance MOSFETs that minimize power dissipation and heat generation during operation. The DRV8256E features separate enable pins and direction control inputs, providing flexible integration with microcontroller platforms including Arduino, Raspberry Pi, and STM32 development boards. The compact carrier dimensions and through-hole pin layout make it ideal for breadboard prototyping and permanent PCB integration in space-constrained robotic platforms.
Key Specifications
| Specification | Details |
| Product Type | Single Brushed DC Motor Driver Carrier |
| Brand | Pololu |
| IC Used | Texas Instruments DRV8256E |
| Motor Channels | 1 Channel |
| Continuous Current Rating | 3A |
| Peak Current Rating | 5A |
| Supply Voltage Range | 6.5V to 28V |
| Control Interface | PWM Speed Control, Direction Control |
| Protection Features | Overcurrent Limiting, Thermal Shutdown |
| Operating Temperature | -20°C to 85°C |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
Key Features
- Integrated H-Bridge Configuration: Enables independent motor direction control and PWM speed modulation from standard microcontroller outputs without external relay circuits
- Wide Supply Voltage Range: Operates from 6.5V to 28V, compatible with 12V automotive systems, 24V industrial supplies, and multi-cell lithium battery packs
- Integrated Current Limiting: Automatic protection against motor stall conditions with programmable current threshold, preventing damage to both driver IC and motor windings
- Thermal Management: Built-in thermal shutdown protection with hysteresis prevents runaway conditions during continuous high-current operation in enclosed spaces
- Compact Carrier Board: Space-efficient PCB design with through-hole connectors suitable for both breadboard prototyping and permanent mounting in robotic platforms
- Low On-Resistance MOSFETs: Minimized voltage drop across switching elements reduces power dissipation and extends battery runtime in mobile robotics applications
Applications and Use Cases
- Mobile Robot Drive Systems: Control differential drive motors in wheeled robots with independent speed and direction control for autonomous navigation and obstacle avoidance algorithms
- Industrial Automation Equipment: Drive conveyor belt motors, robotic arm actuators, and automated assembly line equipment with reliable 24V DC motor control and integrated safety protection
- Drone Propeller Motors: Manage brushed DC motor propulsion systems in quadcopters and multirotor platforms with precise PWM control for altitude and directional stability
- Educational Robotics Projects: Enable students to build line-following robots, maze-solving platforms, and sumo-bot competitors using Arduino and Raspberry Pi microcontrollers
- Hobby Drone and RC Vehicle Systems: Control motor speed and direction in remote-controlled cars, boats, and aircraft with compact form factor and reliable performance
How to Use
To integrate the Pololu DRV8256E into your project, begin by connecting the motor supply voltage (6.5V to 28V) to the dedicated power input pins on the carrier board, ensuring proper polarity to prevent damage to the integrated circuit. Connect your brushed DC motor leads to the motor output terminals, noting that the motor rotation direction is determined by the polarity of the applied voltage through the H-bridge. The control interface requires three signal connections from your microcontroller: PWM signal to the speed control input pin, direction control signal to the direction pin, and a common ground connection to establish proper logic level reference.
Configure your microcontroller code to generate PWM signals at frequencies between 5kHz and 20kHz for optimal efficiency and minimal audible noise from the motor. The PWM duty cycle directly controls motor speed from 0 percent (stopped) to 100 percent (full speed), while the direction control pin logic state determines whether the motor rotates forward or reverse. Implement software-based acceleration ramps in your code to avoid sudden mechanical stress on the motor shaft and gear train during startup. Monitor the carrier board temperature during extended operation at high current levels; if the thermal shutdown activates, reduce the continuous load or improve heat dissipation through additional cooling measures.
Frequently Asked Questions
What is the maximum continuous current this driver can safely handle?
The Pololu DRV8256E is rated for 3A continuous current at 25°C ambient temperature. Peak current capability reaches 5A for short durations during acceleration or stall conditions. Continuous operation above 3A requires adequate heat dissipation through proper PCB layout and thermal management. The integrated thermal shutdown protection automatically disables the driver if junction temperature exceeds approximately 150°C, preventing permanent damage.
Can this driver control multiple motors simultaneously?
No, the DRV8256E is a single-channel driver controlling one brushed DC motor. For multi-motor applications such as differential drive robots, you would need multiple DRV8256E carriers, one for each motor. Pololu also manufactures dual-channel motor drivers like the DRV8256 if you need to control two motors from a single integrated circuit.
What PWM frequency should I use for optimal performance?
The DRV8256E operates efficiently with PWM frequencies between 5kHz and 20kHz. Frequencies below 5kHz may cause audible motor noise and reduced efficiency, while frequencies above 20kHz approach the switching speed limits of the integrated MOSFETs. For most applications, 10kHz to 15kHz provides an optimal balance between efficiency, noise characteristics, and microcontroller resource utilization.
Does this driver require external freewheeling diodes?
No, the DRV8256E integrates body diodes within the MOSFET structure that provide inherent freewheeling paths for motor back-EMF current during PWM off-cycles. This eliminates the need for external protection diodes, simplifying circuit design and reducing component count. The integrated diodes are optimized for the specific switching characteristics of the DRV8256E IC.
What supply voltage range is compatible with this driver?
The DRV8256E operates from 6.5V to 28V, making it compatible with 12V automotive batteries, 24V industrial power supplies, and multi-cell lithium polymer battery packs used in robotics. Ensure your power supply can deliver the required current for your motor load; undersized power supplies may cause voltage sag that affects motor performance and control accuracy.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Returns: 7-day return policy on manufacturing defects only
Buy Pololu DRV8256E Single Brushed DC Motor Driver Carrier Online in India
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