The TB6584AFNG(OC8UMEL) is a PWM Chopper-Type Stepping Motor Driver IC manufactured by Toshiba Semiconductor and Storage. It's designed to drive two-phase bipolar stepping motors with a wide range of operating voltages and currents.

Applications

• Office automation equipment (printers, scanners, copiers)
• Industrial equipment (CNC machines, robotics)
• Amusement machines (gaming devices)
• Surveillance cameras
• Textile machinery

Features

• PWM chopper-type driver: Provides efficient and smooth motor control.
• Constant-current drive: Ensures stable motor torque.
• Built-in protection circuits: Overcurrent, overtemperature, and undervoltage lockout protection.
• Micro-stepping control: Allows for high-resolution motor positioning.
• Low on-resistance: Reduces power dissipation.

Benefits

• Precise motor control: PWM chopper and micro-stepping capabilities ensure accurate positioning.
• Reliable operation: Built-in protection circuits prevent damage to the IC and motor.
• Efficient power utilization: PWM control minimizes power consumption.
• Simplified design: Integrated features reduce external component count.
• Smooth motor operation: PWM and constant-current control minimize vibration and noise.

Additional Details

The TB6584AFNG(OC8UMEL) typically operates from a supply voltage in the range of 10V to 42V. The output current capability varies depending on the specific version but can range from 1A to 2.5A per channel. The package is usually a surface mount type such as HSOP or similar. The device includes a built-in oscillator for generating the PWM control signal. The micro-stepping resolution is programmable, allowing for different levels of precision. An external current sensing resistor is typically used to regulate the motor current. The datasheet provides detailed information on selecting the appropriate current sensing resistor value and setting the micro-stepping mode. This IC often requires a heat sink to dissipate heat, especially at higher operating currents. Control signals are used to set the direction and step the motor. This integrated driver simplifies the control and operation of stepper motors in a variety of applications. Logic signals control the direction and stepping. It is important to refer to the data sheet for the safe operating area of the chip. The TB6584 offers a good balance between performance and cost.