الوصف
The DRV8825 Stepper Motor Driver with Heatsink features high microstep resolution (up to 1/32), adjustable current limiting, and protection against overcurrent, overtemperature, and undervoltage conditions. It offers a simple Step/Dir interface, operates from 8.2V to 45V, and includes a built-in regulator for a 3.3V logic supply. The integrated heatsink is crucial for dissipating heat and enabling the driver to deliver higher currents (up to 2.2A per phase) compared to operating without cooling.
Features
- Microstepping: Supports full-step, half-step, 1/4, 1/8, 1/16, and 1/32-step modes for fine control.
- Adjustable Current Limit: A potentiometer allows setting the maximum current to protect the motor and driver, enabling higher speeds.
- Intelligent Chopping: Automatically selects the optimal current decay mode (fast or slow) for smooth operation.
- Built-in Protections: Includes overtemperature, overcurrent, and undervoltage lockout to prevent damage from unstable power or excessive heat.
- Wide Operating Voltage: Works with motor supply voltages ranging from 8.2V to 45V.
- Simple Control Interface: Uses standard Step and Direction (Step/Dir) pins, making it easy to interface with microcontrollers.
- Internal 3.3V Regulator: Provides a 3.3V logic supply internally, so no external logic supply is needed.
- Heatsink: The included heatsink is essential for dissipating heat generated during operation, especially when drawing high currents.
- Compatibility: The module's pinout and size are often compatible with the A4988 stepper motor driver.
- Low-Power Sleep Mode: A dedicated pin can be used to put the driver into a low-power sleep mode.
Specification
- Operating Voltage: 8.2V – 45V DC.
- Logic Voltage: 3.3V / 5V.
- Max Output Current: 1.5A (without heat sink), 2.2A (with cooling)
- Microstepping: Up to 1/32.
- Interface: Step/Dir pins for control.