BD6757KN-E2

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BD6757KN-E2 Application Field and Working Principle

BD6757KN-E2 is a low-voltage PMIC (Power Management Integrated Circuit) dedicated for driving and controlling a variety of motors used in small and medium-sized applications. BD6757KN-E2 is equipped with a harsh environment detection feature and a powerful output current driver to provide enhanced system reliability. With the unique capabilities of BD6757KN-E2, the motor driver can withstand a large number of external environments and meets the needs of various motor applications.

The BD6757KN-E2 motor driver is suitable for battery-powered applications, such as brushless DC motors, linear motors, and step motors. This chip is capable of controlling different DC motor types depending on the power supply voltage. Its operation voltage range is from 2.7 V to 5.5 V, allowing it to work with a variety of different power sources. Its maximum operating temperature ranges from -40 to +85 degrees Celsius, making it suitable for a wide range of operating temperatures. Additionally, the chip has an internal thermal protection circuit, an over current protection circuit, and a short circuit protection circuit, making it suitable for motor applications that require more stringent specifications.

Main Features of BD6757KN-E2:

• Operating voltage range: 2.7 V to 5.5 V;
• Maximum operating temperature range: -40 to +85℃;
• Internal thermal protection circuit;
• Over current protection circuit;
• Short circuit protection circuit;
• Adaptive freewheeling for multiple phases.

Working Principle of BD6757KN-E2:

The BD6757KN-E2 is designed to provide flexible control options for a variety of motors. It is capable of driving two-phase and three-phase motors. The device works using a brushless DC motor control circuit, which is capable of controlling the speed and direction of the motor. This can be done through PWM (Pulse Wide Modulation) which allows for precise control, or through open loop speed control, by providing a varying voltage input at the motor. Additionally, the BD6757KN-E2 also provides a power-on reset feature and under-voltage lockout protection features.

The BD6757KN-E2 offers a wide range of protection features, including the internal thermal protection circuit, the over current protection circuit, and the short circuit protection circuit. Additionally, the chip is also capable of adaptive freewheeling for multiple phases. This allows for improved efficiency for the various motor operations.

The chip is connected to the motor via a four-wire interface: EN (enable), PH1 (phase 1), PH2 (phase 2), and PWM (Pulse-Width Modulation).The output current of the chip is controlled by PWM pulses. The chip also provides a built-in error amplifier to control the PWM duty cycle. The frequency of the PWM can be set via the VCC pin, and is required to be between 50Hz to 10kHz. By setting the PWM frequency appropriately, the chip can control the speed of the motor.

BD6757KN-E2 is a feature-packed and robust motor driver, making it an ideal choice for a variety of motor applications. With its flexible and reliable design, it is able to provide a robust and reliable solution for these applications.

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