MDL-BDC-B

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The MDL-BDC-B motor driver board, module, and working principles, present an interesting set of features and capabilities for controlling the speed and direction of a variety of motors. In the following sections, a brief overview of the MDL-BDC-B is presented, followed by the application field and working principles.

Overview of MDL-BDC-B Motor Driver Board

The MDL-BDC-B is a motor driver board that was designed specifically for controlling brushless direct current (BLDC) motors. It is composed of four-phase MOSFET half-bridge with integrated gate drivers, phase-shifted sinusoidal current sources, and an I2C control bus for speed and direction regulation of the motor. The MDL-BDC-B board has a wide supply voltage range of 8 ~ 36 VDC and a continuous maximum current rating up to 5.5A. Maximum speed of the motor is determined by the supply voltage, so depending on the motor voltage, it can reach up to 16,000 RPMs.

The phase-shifted sinusoidal current sources used in the MDL-BDC-B board are capable of reducing electromagnetic interference while providing a smooth torque-speed response to the motor. This helps reduce system-level power dissipation and allows for precise operation. The I2c control bus is used for speed and direction regulation of the motor, allowing users to securely and easily adjust parameters such as acceleration or deceleration ramps and speed profiles.

The metal case of the MDL-BDC-B board is designed with the terminals in the middle so the connections are easy to access. There are four connectors on the board – three for power input and one for motor output. The board also offers over-current and over-voltage protection.

Application Field

The MDL-BDC-B is a versatile driver module suitable for a wide range of applications. It can be used in a variety of robotics and automation applications such as medical robots, AGVs, unmanned aerial vehicles (UAVs), industrial automation, and 3D printers. It is ideal for use in applications that require high accuracy and efficiency, such as robotic arms or servo systems. The module can also be used to control the movement of linear actuators.

In addition to robotics and automation applications, the MDL-BDC-B is well suited for robotic specific applications such as drive systems, motors, and wheelchairs. In these applications, the module can be used to provide precise control of the speed and torque of the motor. The board is also suitable for occasions such as outdoor monitoring and surveillance, where a robust and compact motor driver board is needed.

Working Principles

The MDL-BDC-B board’s working principle is based on the phase-shifted sinusoidal current source topology. This topology consists of four half-bridge MOSFETs that are connected in an opposite direction, so when one MOSFET is turned on, the other is turned off. Each of these half-bridges are then coupled with an integrated gate driver, which is continuously switching the output voltage. The phase-shift of the MOSFET’s enables current limiting and precise speed control.

Furthermore, the I2C control bus allows for the programming of parameters such as acceleration and deceleration ramp profiles, speed profiles and frequency response. The I2C bus can also be used for diagnostic purposes, providing information regarding gate driver current, input voltage, PWM duty cycle, and system temperature.

Overall, the combination of the phase-shift technique, integrated gate drivers, and the I2C control bus allows the MDL-BDC-B driver module to provide precise and efficient motor control. This makes it an ideal solution for a wide range of robotics, automation, and motion control applications.

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