DRV8231 - 35V, 3.7A Brushed DC Motor Driver | Texas Instruments
料号： DRV8231 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.5 | $1.50 |
| 10 | $1.2 | $12.00 |
| 100 | $0.95 | $95.00 |
| 500 | $0.8 | $400.00 |
| 1,000 | $0.7 | $700.00 |
| 3,000 | $0.6 | $1,800.00 |
DRV8231 概述
A brushed DC motor driver is an integrated circuit that controls the direction and speed of a brushed DC motor by switching the polarity and magnitude of voltage applied to the motor terminals. The DRV8231 uses four N-channel MOSFETs in an H-bridge configuration, allowing bidirectional control of the motor. The integrated charge pump enables N-channel high-side switching, which improves efficiency and supports 100% duty cycle operation, eliminating the need for external components.
Key features of the DRV8231 include a typical RDS(on) of 600 mΩ for the high-side and low-side FET pairs, which minimizes power loss and heat generation. The device also includes integrated current regulation, which limits the motor current to a programmable level, protecting the motor and driver from overcurrent conditions. Two logic inputs (IN1 and IN2) control the bridge, allowing simple PWM or on/off control from a microcontroller.
The DRV8231's small 8-pin WSON package and minimal external component requirement make it ideal for applications where board space is at a premium. Its wide operating voltage range from 4.5 V to 33 V accommodates a variety of power sources, from single-cell Li-ion batteries to 24-V industrial supplies. The integrated current regulation eliminates the need for a separate current-sense resistor and amplifier, further reducing the bill of materials.
Typical applications include consumer electronics such as drones, toys, and portable devices; industrial automation like small actuators and valve controls; and medical equipment requiring reliable and compact motor drives. The DRV8231 also finds use in robotics and home appliances where precise and efficient motor control is essential.
When designing with the DRV8231, ensure that the supply voltage and motor current ratings are within the device's safe operating area. The charge pump capacitor must be placed close to the device for stable operation. Also, proper PCB layout with adequate thermal vias is recommended to dissipate heat effectively.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a complete resource for engineers selecting a brushed DC motor driver.
直接替换替代料： DRV8231 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
DRV8251
✅ 直接替换📋 参考替代料（不在目录中）
DRV8251A
✅ 直接替换📋 参考替代料（不在目录中）
DRV8231 最大额定值与电气特性
| Supply Voltage Range | 4.5 V to 33 V |
| Output Current (Continuous) | 3.7 A |
| RDS(on) (Typical) | 600 mΩ |
| H-Bridge Configuration | 4 N-channel MOSFETs |
| Control Interface | 2 Logic Inputs (IN1, IN2) |
| Charge Pump | Yes (supports 100% duty cycle) |
| Current Regulation | Integrated |
| 封装 | 8-WSON (2x2) |
| 安装类型 | Surface Mount |
| Motor Type | Brushed DC |
| 引脚数 | 8 |
| 拓扑 | H-Bridge |
DRV8231 引脚配置
| 引脚 1 | VM — Motor supply voltage input |
| 引脚 2 | OUT1 — H-bridge output 1 |
| 引脚 3 | GND — Ground |
| 引脚 4 | OUT2 — H-bridge output 2 |
| 引脚 5 | IN1 — Logic control input 1 |
| 引脚 6 | IN2 — Logic control input 2 |
| 引脚 7 | NC — Not connected (per datasheet) |
| 引脚 8 | NC — Not connected (per datasheet) |
典型应用
DRV8231 适用于 6 应用s: Robotics, Consumer Electronics, Industrial Automation, Medical Devices, Home Appliances, Automotive Auxiliary.
Robotics
The DRV8231 is well-suited for robotics applications, such as small wheeled robots, robotic arms, and actuators. Its 3.7 A output current and wide 4.5-V to 33-V supply range allow it to drive a variety of DC motors commonly used in hobby and industrial robots. The integrated current regulation protects the motor and controller from stalls, while the compact WSON package enables space-efficient PCB layouts. For example, in a mobile robot, the DRV8231 can drive the drive motors with simple PWM signals from a microcontroller, and the current regulation feature ensures safe operation when the robot encounters obstacles. The charge pump supports 100% duty cycle, allowing full-speed forward or reverse without additional components.
推荐
Consumer Electronics
In consumer electronics, the DRV8231 drives brushed DC motors in devices such as drones, toys, cameras, and small appliances. Its low RDS(on) of 600 mΩ reduces power loss, extending battery life in portable devices. The device's small 8-pin WSON package fits into tight spaces, making it ideal for compact designs. For example, in a drone gimbal, the DRV8231 can control the motors for stabilization, with the integrated current regulation preventing overcurrent during sudden movements. The wide input voltage range accommodates single-cell Li-ion batteries (3.7 V nominal) up to 33 V, enabling use in both battery-powered and wall-adapter devices. The simple two-input control interface simplifies firmware development, allowing quick implementation of speed and direction control.
推荐
Industrial Automation
The DRV8231 is suitable for industrial automation applications such as small valves, pneumatic actuators, and conveyor belt drives. Its 4.5-V to 33-V supply range covers 24-V industrial bus systems, and the 3.7-A output current can drive small motors used in process control. The integrated current regulation provides overcurrent protection, enhancing system reliability in harsh environments. The device's thermal shutdown and undervoltage lockout features, though not fully specified in the provided data, are typical for TI motor drivers and help protect the system. The compact WSON package allows for high-density PCB designs on control boards. For example, in an automated valve positioner, the DRV8231 can drive a small DC motor to adjust the valve, with the current limit ensuring the motor does not overheat during stalls.
推荐
Medical Devices
In medical devices, the DRV8231 provides motor driving for applications such as infusion pumps, syringe pumps, and small surgical tools. Its low noise and reliable operation are critical for medical equipment. The device's compact size and wide voltage range allow it to be integrated into portable devices. The integrated current regulation helps maintain consistent motor torque, which is essential for precise fluid delivery. Although specific compliance certifications (e.g., ISO 13485) are not provided, the device itself is designed for industrial and consumer use, and medical designers must ensure appropriate qualification. The charge pump enables 100% duty cycle operation, necessary for continuous pumping. For example, in an infusion pump, the DRV8231 can drive a stepper or DC motor with precise speed control, while the current limit protects the motor from overload, ensuring patient safety.
推荐
Home Appliances
The DRV8231 is used in home appliances such as vacuum cleaners, coffee grinders, and electric shutters. Its ability to drive brushed DC motors with high efficiency and low noise makes it suitable for consumer appliances. The device's small package and minimal external components reduce manufacturing costs. With a 3.7-A output current, it can handle the motors typically found in these appliances. The integrated current regulation prevents damage from stalls, such as when a vacuum cleaner motor is blocked. The wide supply voltage range allows operation from various AC-DC adapters or battery packs. For example, in a cordless vacuum cleaner, the DRV8231 can drive the main brush motor, with PWM control providing variable suction levels while maintaining compactness.
推荐
Automotive Auxiliary
Although the DRV8231 is not AEC-Q100 qualified, it can be used in automotive auxiliary applications where qualification is not strictly required, such as non-safety systems. Its wide 4.5-V to 33-V supply range covers 12-V automotive systems, and the 3.7-A current rating can drive small motors like window regulators or seat adjusters. The device's integrated current regulation and charge pump improve reliability and efficiency. For safety-critical applications, designers should consider TI's automotive-qualified alternatives like the DRV8871-Q1. The compact WSON package allows integration into space-constrained modules. For example, in a rearview mirror adjustment system, the DRV8231 can drive the motor with PWM control, and the current limit protects the motor from stalls caused by obstructions.
推荐
推荐产品汇总
工程参考数据： DRV8231 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DRV8251 | DRV8251A |
|---|---|---|---|
| Package | 8-WSON (2x2) | 8-WSON (2x2) | 8-WSON (2x2) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Range | 4.5 V to 33 V | 4.5 V to 33 V | 4.5 V to 33 V |
| Output Current | 3.7 A | 4.1 A | 4.1 A |
| Integrated Current Regulation | Yes | Yes | Yes |
| Charge Pump | Yes | Yes | Yes |
| Pin Count | 8 | 8 | 8 |
关键差异点
- Higher output current than DRV8231's 3.7 A （对比 DRV8251)
- Integrated current sense （对比 DRV8251A)
- Compact WSON package （对比 DRV8870)
设计说明
Place the charge pump capacitor (typically 10 nF to 100 nF) as close as possible to the CPH and CPL pins to ensure stable operation. Use a 4.7 µF to 10 µF ceramic capacitor on the VM pin to decouple the supply and handle motor current transients. Keep the trace width for the motor output pins adequate for the peak current (≥ 20 mil for 3.7 A).
Estimated: Power dissipation can be approximated by P = I² × RDS(on) × duty cycle. For 3.7 A and 600 mΩ, at 100% duty, P ≈ 8.2 W. The WSON package has limited thermal performance; use a large copper pour on the PCB and thermal vias under the exposed pad to dissipate heat. For typical duty cycles below 50%, average power is lower, but still plan for adequate heat sinking.
Ensure that the logic input voltages (IN1, IN2) are within the specified high/low thresholds when driving from a 3.3 V MCU. The DRV8231 accepts standard logic levels, but verify VIH and VIL from the datasheet. Avoid applying voltage to the outputs when the device is disabled; the output pins must not be driven externally. Also, ensure that the motor current limit is set correctly via the external resistor on the IPROPI pin (if applicable) to prevent overcurrent damage.
合规信息
Compliance information not provided in the verified web data. Check the TI product page for detailed environmental compliance status.
