L6227N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Motor Driver
• Characteristics: High voltage, high current, bipolar stepper motor driver
• Package: Multiwatt15
• Essence: The L6227N is a versatile motor driver IC designed to drive bipolar stepper motors with high precision and efficiency.
• Packaging/Quantity: The L6227N is available in a Multiwatt15 package and is typically sold in reels or tubes.

Specifications

• Supply Voltage: 8V to 52V
• Output Current: Up to 2.8A per phase
• Operating Temperature: -40°C to +150°C
• Control Interface: Parallel
• Protection Features: Thermal shutdown, overcurrent protection, undervoltage lockout

Pin Configuration

The L6227N has a total of 15 pins arranged as follows:

1. VREF1: Reference voltage for channel 1
2. OUT1A: Output A for channel 1
3. OUT1B: Output B for channel 1
4. GND: Ground
5. VCC: Positive supply voltage
6. VREF2: Reference voltage for channel 2
7. OUT2A: Output A for channel 2
8. OUT2B: Output B for channel 2
9. INH1: Input signal for channel 1
10. INH2: Input signal for channel 2
11. VM: Motor supply voltage
12. REF: Internal reference voltage
13. SENSE1: Sense resistor connection for channel 1
14. SENSE2: Sense resistor connection for channel 2
15. VCP: Charge pump capacitor connection

Functional Features

• Microstepping: The L6227N supports microstepping, allowing for smoother and more precise motor control.
• Current Control: The IC incorporates a current control system to regulate the motor current, ensuring optimal performance and preventing overheating.
• Protection Mechanisms: The L6227N includes various protection features such as thermal shutdown, overcurrent protection, and undervoltage lockout to safeguard the motor and the driver circuitry.

Advantages and Disadvantages

Advantages: - High voltage and current capability - Microstepping support for smoother motion - Built-in protection features for enhanced reliability - Versatile control interface

Disadvantages: - Limited to bipolar stepper motors - Requires external sense resistors for current control

Working Principles

The L6227N operates by receiving control signals through its input pins (INH1 and INH2) to determine the desired motor movement. It then generates the necessary output signals (OUT1A, OUT1B, OUT2A, OUT2B) to drive the stepper motor coils accordingly. The internal current control system regulates the motor current based on the reference voltages (VREF1 and VREF2) and the sense resistor connections (SENSE1 and SENSE2).

Application Field Plans

The L6227N is commonly used in various applications that require precise control of bipolar stepper motors. Some potential application fields include:

1. Robotics: The IC can be utilized in robotic systems for controlling the movement of robot arms, legs, or other motorized components.
2. CNC Machines: The L6227N can be employed in computer numerical control (CNC) machines to accurately position cutting tools or workpieces.
3. 3D Printers: The IC enables precise control of the stepper motors responsible for moving the print head and build platform in 3D printers.
4. Automated Equipment: The L6227N can be integrated into automated equipment, such as conveyor systems or assembly lines, to control motorized movements.

Alternative Models

• L6208: Similar bipolar stepper motor driver IC with lower voltage and current ratings.
• L6470: Advanced stepper motor driver IC with integrated motion control features and serial interface.
• DRV8825: Stepper motor driver IC with higher microstepping resolution and adjustable current control.

(Note: The above alternative models are provided for reference and may have different specifications and pin configurations. Please refer to their respective datasheets for detailed information.)

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