L6226D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Motor Driver
• Characteristics: High voltage, high current, stepper motor driver
• Package: Multiwatt15
• Essence: Power Management IC
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Operating Voltage: 8V to 52V
• Output Current: Up to 2.8A per phase
• Number of Phases: 2
• Control Interface: Parallel
• Protection Features: Thermal shutdown, overcurrent protection, undervoltage lockout

Detailed Pin Configuration

The L6226D has a total of 15 pins. The pin configuration is as follows:

1. VREF - Reference voltage input for the internal current control circuitry.
2. GND - Ground reference for all the internal circuitry.
3. OUT1 - Output terminal for Phase 1 of the stepper motor.
4. OUT2 - Output terminal for Phase 2 of the stepper motor.
5. VCC - Positive supply voltage input.
6. IN1 - Input terminal for controlling Phase 1 of the stepper motor.
7. IN2 - Input terminal for controlling Phase 1 of the stepper motor.
8. IN3 - Input terminal for controlling Phase 2 of the stepper motor.
9. IN4 - Input terminal for controlling Phase 2 of the stepper motor.
10. REF - Reference voltage output for external components.
11. CP1 - Charge pump capacitor connection terminal.
12. CP2 - Charge pump capacitor connection terminal.
13. VCP - Charge pump voltage input.
14. VS - Sense voltage input for overcurrent protection.
15. VBB - Bootstrap voltage input.

Functional Features

• Bipolar stepper motor driver with microstepping capability.
• Internal current control circuitry for precise motor control.
• Built-in protection features to prevent damage due to overcurrent and thermal issues.
• Parallel control interface for easy integration with microcontrollers.
• High voltage and high current capabilities suitable for a wide range of applications.

Advantages and Disadvantages

Advantages: - High voltage and current ratings allow driving powerful stepper motors. - Microstepping capability provides smoother and more precise motor control. - Integrated protection features enhance the reliability and durability of the system. - Parallel control interface simplifies the integration process.

Disadvantages: - Limited number of phases may restrict compatibility with certain motor types. - Requires external components for charge pump operation. - Higher cost compared to simpler motor driver solutions.

Working Principles

The L6226D is a bipolar stepper motor driver that utilizes a parallel control interface. It operates by receiving control signals from an external microcontroller or control circuitry. These control signals determine the sequence and timing of the motor phases, allowing precise control over the motor's rotation.

The internal current control circuitry ensures that the motor currents are regulated within safe limits, preventing damage due to overcurrent conditions. The driver also incorporates thermal shutdown and undervoltage lockout protection mechanisms to safeguard the system during abnormal operating conditions.

Detailed Application Field Plans

The L6226D motor driver is widely used in various applications that require precise control over stepper motors. Some of the common application fields include:

1. Robotics: The driver is used in robotic systems to control the movement of robotic arms, legs, or other motorized components.
2. CNC Machines: It finds application in computer numerical control (CNC) machines for controlling the movement of cutting tools, spindles, or worktables.
3. 3D Printers: The driver enables accurate positioning and movement control in 3D printers, ensuring high-quality prints.
4. Automated Equipment: It is used in automated equipment and machinery for tasks such as conveyor belt control, material handling, or assembly line operations.
5. Medical Devices: The driver is employed in medical devices that require precise motor control, such as infusion pumps, robotic surgical systems, or diagnostic equipment.

Detailed and Complete Alternative Models

1. L6208 - Similar bipolar stepper motor driver with lower voltage and current ratings.
2. L6470 - Advanced stepper motor driver with integrated motion control features and serial interface.
3. DRV8825 - Stepper motor driver with higher microstepping capability and adjustable current control.
4. A4988 - Cost-effective stepper motor driver with basic functionality and easy integration.

These alternative models offer different features and specifications, allowing users to choose the most suitable option based on their specific requirements.

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