DRV8825PWPR - 45V 2.5A Stepper Motor Driver | TI
MPN: DRV8825PWPR ✓ Hoạt độngDRV8825PWPR Tóm tắt
A stepper motor driver is a power management IC that translates step and direction signals into the precise current sequences needed to drive a bipolar stepper motor. It integrates two H-bridges and a microstepping indexer, simplifying the interface between a microcontroller and the motor. The DRV8825 belongs to the motor driver category, which is part of the broader power management IC family.
Key features include 1/32 microstepping, which provides smooth motion and reduced noise, and current regulation that maintains constant torque regardless of motor speed. The device also includes protection features such as overcurrent, overtemperature, and undervoltage lockout, ensuring reliable operation in demanding environments. The nFAULT pin provides fault indication to the host controller.
The DRV8825 uses a power MOSFET architecture with low on-resistance, minimizing power dissipation and improving efficiency. The microstepping indexer generates the necessary current waveforms, reducing the computational load on the microcontroller. The device supports both step/direction and phase/enable interfaces, offering flexibility in system design.
Typical applications include 3D printers, CNC machines, robotics, and automated equipment such as printers and scanners. The wide voltage range and high current capability make it ideal for driving NEMA 17 and NEMA 23 stepper motors. The HTSSOP package with exposed thermal pad facilitates heat dissipation, enabling continuous operation at moderate currents.
When designing with the DRV8825, ensure adequate PCB copper area for thermal management, especially at currents above 1.5A. Place the sense resistors close to the device and use proper decoupling capacitors on the VM pin to minimize voltage spikes.
Bộ thay thế dễ dàng lắp đặt cho DRV8825PWPR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DRV8825PWPR (cùng hình factor và footprint).
DRV8825PWP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DRV8824PWPR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DRV8818PWPR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DRV8825PWPR Tỷ lệ tối đa & tính chất điện
| Motor Type | Bipolar Stepper |
| Output Current | 2.5 A (peak) |
| Supply Voltage (VM) | 8.2 V to 45 V |
| Logic Supply Voltage (VDD) | 3.3 V to 5 V |
| Microstepping | 1/32 step |
| Number of H-Bridges | 2 |
| RDS(on) (High-Side + Low-Side) | 0.55 ohm (typical) |
| Current Regulation | Yes (PWM) |
| Fault Protection | Overcurrent, Overtemperature, Undervoltage Lockout |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | HTSSOP-28 (PWP) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Giao diện | Step/Direction, Phase/Enable |
Cấu hình chân DRV8825PWPR
| Chân 1 | GND — Ground |
| Chân 2 | VM — Motor supply voltage |
| Chân 3 | AOUT1 — H-bridge A output 1 |
| Chân 4 | AOUT2 — H-bridge A output 2 |
| Chân 5 | VDD — Logic supply voltage |
| Chân 6 | GND — Ground |
| Chân 7 | STEP — Step input |
| Chân 8 | DIR — Direction input |
| Chân 9 | nFAULT — Fault output (active low) |
| Chân 10 | GND — Ground |
| Chân 11 | BOUT1 — H-bridge B output 1 |
| Chân 12 | BOUT2 — H-bridge B output 2 |
| Chân 13 | VM — Motor supply voltage |
| Chân 14 | GND — Ground |
Ứng dụng tiêu biểu
DRV8825PWPR phù hợp cho 6 Áp dụngs: 3D Printers, CNC Machines, Robotics, Automated Equipment, Textile Machinery, Medical Equipment.
3D Printers
The DRV8825PWPR is ideal for 3D printers, driving stepper motors for X, Y, Z, and extruder axes. Its 2.5A current capability and 1/32 microstepping provide smooth, precise motion, reducing print artifacts. The wide voltage range (8.2V-45V) supports both 12V and 24V printer power supplies. The integrated current regulation maintains torque at various speeds, ensuring consistent extrusion and layer alignment. The nFAULT pin can be used to detect motor stalls or overcurrent conditions, enhancing printer reliability.
Được đề xuất
CNC Machines
In CNC machines, the DRV8825PWPR drives stepper motors for axis movement with high torque and precision. Its 45V maximum voltage allows operation from 24V or 36V supplies, enabling faster traverse speeds. The 1/32 microstepping reduces vibration and improves surface finish. The device's overcurrent and overtemperature protection safeguard against motor stalls and overloads. The step/direction interface simplifies integration with CNC controllers, and the low RDS(on) minimizes heat generation, allowing continuous operation in enclosed cabinets.
Được đề xuất
Robotics
The DRV8825PWPR is well-suited for robotics applications, driving stepper motors in robotic arms, mobile platforms, and actuators. Its compact HTSSOP package saves board space, and the 2.5A current capability supports a range of motor sizes. The microstepping feature enables smooth, precise positioning, essential for tasks like pick-and-place. The device's low quiescent current helps extend battery life in battery-powered robots. The nFAULT output can be monitored by the robot's controller to detect faults and implement safety routines.
Được đề xuất
Automated Equipment
The DRV8825PWPR is designed for automated equipment such as printers, scanners, and vending machines. Its integrated microstepping indexer reduces the microcontroller's workload, allowing simpler firmware. The wide voltage range accommodates various power supplies, and the current regulation ensures consistent torque for reliable paper feeding or media handling. The device's protection features prevent damage from jams or overloads. The HTSSOP package with exposed pad aids thermal management in compact enclosures.
Được đề xuất
Textile Machinery
In textile machinery, the DRV8825PWPR drives stepper motors for precise thread tension and pattern control. Its high current capability and microstepping provide smooth, accurate motion, essential for consistent stitching. The device's robust protection features ensure reliable operation in dusty, high-vibration environments. The wide voltage range allows integration into existing 24V control systems. The step/direction interface simplifies connection to industrial controllers, and the low power dissipation reduces heat buildup in enclosed control panels.
Được đề xuất
Medical Equipment
The DRV8825PWPR is used in medical equipment such as infusion pumps and diagnostic devices that require precise, quiet motor control. Its low noise operation and microstepping ensure smooth movement, critical for patient comfort. The device's small package and low power consumption are advantageous for portable devices. The protection features enhance safety, preventing motor faults from causing harm. The wide voltage range supports battery-powered operation, and the step/direction interface is compatible with medical-grade microcontrollers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DRV8825PWPR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DRV8825PWP | DRV8824PWPR | DRV8818PWPR |
|---|---|---|---|---|
| Package | HTSSOP-28 (PWP) | HTSSOP-28 (PWP) | HTSSOP-28 (PWP) | HTSSOP-28 (PWP) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current (Peak) | 2.5 A | 2.5 A | 1.6 A | 2.5 A |
| Supply Voltage (VM) | 8.2 V to 45 V | 8.2 V to 45 V | 8.2 V to 45 V | 8.2 V to 45 V |
| Microstepping | 1/32 | 1/32 | 1/32 | 1/8 |
| RDS(on) (HS+LS) | 0.55 ohm | 0.55 ohm | 0.55 ohm | 0.55 ohm |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- Higher microstepping resolution (1/32) vs A4988 (1/16) (vsA4988)
- Wider voltage range (45V) vs A4988 (35V) (vsA4988)
- Higher output current (2.5A) vs DRV8824 (1.6A) (vsDRV8824PWPR)
Ghi chú thiết kế
The DRV8825PWPR can dissipate significant power at high currents. For example, at 2.5A with RDS(on) of 0.55 ohm, each H-bridge dissipates about 1.7W, totaling 3.4W for both bridges. The HTSSOP package has a thermal resistance of about 30C/W (with exposed pad), so at 25C ambient, the junction temperature could reach 127C. Ensure adequate PCB copper area (at least 1 square inch) connected to the thermal pad, and consider forced airflow for continuous operation above 1.5A.
Place a 100nF ceramic capacitor close to the VM pin and a 10uF electrolytic capacitor nearby to handle current transients. Use a 100nF capacitor on VDD. The sense resistors (if used) should be low-inductance types and placed close to the device. Route the STEP and DIR signals away from high-current traces to avoid noise coupling. The exposed thermal pad must be soldered to a large copper pour for heat dissipation.
Do not exceed the absolute maximum VM of 45V. Ensure the logic supply VDD is within 3.3V-5V; applying higher voltage can damage the device. The nFAULT pin is open-drain and requires a pull-up resistor. When using current regulation, set the sense resistor value correctly to avoid overcurrent. Also, note that the DRV8825 does not have a built-in STEP/DIR interface for full-step; it requires external microstepping control via the MODE pins.
Thông tin tuân thủ
RoHS compliant per TI product page. Not AEC-Q100 qualified. Halogen-free status not specified in provided data.
