BD8271EFV-E2

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The BD8271EFV-E2 is an integrated motor control power supply IC for driving bipolar stepping motors. It comes in a 32-pin plastic TSSOP package with thermal pad for improved logic power supply noise cancellation and low thermal resistance. It is suitable for robot actuators, ORM acceleration, high-speed and high-precision motion control, and general-purpose motor drive applications.

The BD8271EFV-E2 is designed to have a high power supply voltage range of 16.5 V up to 50 V and deliver an output current of 1.5 A (peak) while controlling any kind of bipolar stepping motor. The IC supports both constant current and constant voltage mode and comes with integrated over-temperature and over-voltage protection features. Additionally, it features a PV-EC interface that enables monitoring of the motor current, on-off state, and fault detection.

The BD8271EFV-E2 is a single-channel motor controller that uses chopper control to regulate the motor current. It consists of three transistors for power switching and two R-C networks for current sensing. The current sensing circuit is used to detect the motor current and to adjust the power transistors’ duty cycle so that the desired motor current can be maintained. The integrated protection circuit monitors the temperature, voltage, and current levels, and shuts down the power supply if any of them exceed the set limit.

When the power is applied to the motor, the BD8271EFV-E2 enables the integrated power transistors to keep the motor current at the target value. The motor current can be adjusted either with a resistor connected directly to the IC or with an external control signal. In order to reduce noise caused by the power switching, the IC has an integrated low-pass filter circuit that helps to minimize spike noise.

The BD8271EFV-E2 is also equipped with a wide range of microcontroller interfaces, enabling it to be used in various applications such as robot control, micro-machining, and positioning systems. It provides high-speed control and low noise for motor control applications, making it suitable for a wide range of motor control applications.

In summary, the BD8271EFV-E2 is an integrated motor control power supply IC suitable for driving bipolar stepping motors. Its main features include constant current and constant voltage mode, integrated over-temperature and over-voltage protection features, PV-EC interface for monitoring of the motor current, on-off state, and fault detection, wide-range microcontroller interfaces, and a low-pass filter circuit for reducing noise caused by power switching.

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