A3935KJP

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The A3935KJP is a general-purpose, low-noise, high-precision microstepping motor driver IC capable of driving a two-phase motor with up to 2 A of peak motor current. It integrates many motor control features into a single package, such as full bridge logic and peripherals, a half-bridge driver, voltage regulation, and a programmable logic controller. This IC is ideal for driving small sized, low voltage DC and stepper motors in a wide variety of applications, such as 3D printers, robotics, and motor control applications in industrial and consumer products.

The A3935KJP is designed to reduce the risk of motor stall and features a wide power range from 5 V to 25 V, making it suitable for use in a variety of motor control applications. Furthermore, its thermal protection protects the IC and prevents motor stall during long-period operations for reliable operation over extended periods.

The A3935KJP is a two-phase motor driver with a built-in two-phase unipolar stepper motor driver and two integrated half-bridge drivers. It also provides full bridge logic peripherals, voltage regulation, and a programmable logic controller. The IC works in two modes: the microstepping mode and the full step mode.

In microstepping mode, the A3935KJP implements a technique called \'microstepping\' to produce movement in a stepper motor. This technique allows the motor to move much more smoothly than in full-step mode. It also reduces electrical noise, as the motor current is chopped up into finer increments. In microstepping mode, the driver controls the number of steps, the acceleration, and the speed of the motor. This can be adjusted through the onboard PWM, UART, and I2C interfaces.

In full step mode, the A3935KJP follows an \'on/off\' sequence to drive the stepper motor. In this mode, the driver simply controls the steps, acceleration, and speed of the motor, as well as current limitation. This mode is suitable for applications where precision and speed of the motor is not an issue, such as in consumer and home appliances.

The A3935KJP integrates an on-board EMS (Electromechanical System) controller for managing motor states, including uniform acceleration and deceleration across multiple motors. This feature makes it ideal for multi-axis systems requiring high-speed synchronization. The controller also allows the user to set motor torque by controlling the current flowing through the motor windings.

The integrated LED indicators provide a visual indication of the current motor state and status. There are 5 LEDs on the A3935KJP to show the current state of the indicated motor and its rotation direction, enabling faster fault diagnosis and troubleshooting. The device also features an adjustable soft-start and also offers thermal and overcurrent protection capabilities. The A3935KJP includes an I2C/SMBus interface for hardware configuration and a UART interface for easy software configuration.

The A3935KJP is the perfect solution for high-precision, low-noise motor control applications. It can be used in industrial, consumer and medical applications, including 5-axis robotics, 3D Printers, CNC machines, and stepper motor control systems. For robotic applications, it provides a simple and efficient way to control a self-contained motor while minimizing the risk of motor stall and ensuring reliable operation in higher power applications. The combination of its low-noise, high-precision, and configurable motor controller capabilities makes the A3935KJP a great option for driving two-phase stepper motors.

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