SLA7075MR

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The SLA7075MR is a unique motor driver integrated circuit (IC) developed by Sanken Electric Co. Ltd. It is 3.2A peak, 35.4V, mixed-mode, single-channel motor controller and driver used for brushed, DC brushed brushless (BLDC), AC step, and AC induction motors. This motor driver IC is designed to operate with a wide range of motors, from nominal 3.2A to 35.4V peak operation applied to brushed, DC brushed brushless, and AC step motors. The SLA7075MR uses an advanced mixed-mode control method and can be used to achieve high-accuracy position control and smooth rotation speed control in the speed range of 0.1 - 10,000 r/min.

Application Fields

The SLA7075MR can be used in a variety of motors driving applications. It can be used in medical imaging, laboratory equipment, robotics, stereo and home entertainment, security and surveillance, automotive and transportation, and industrial automation. This motor driver IC is also suitable for motion control with large loads and precise low-speed control applications. It can also be used to drive servo motors, motors with encoder feedback, and stepper motors.

Working Principle

The SLA7075MR adopts advanced mixed-mode control method. The control signals input to the motor driver IC are converted to precise high-speed gate signals for controlling power transistors, such as IGBT and MOSFET, to drive the motor. The SLA7075MR drives the motor in three modes: a phase-shift control mode, a phase-lock control mode, and a PWM control mode. The phase-shift control mode is used for position and speed control, while the PWM control mode is used for torque control.

In the phase-shift control mode, the SLA7075MR uses the pulse width modulation (PWM) signal to generate a phase-shifted voltage, which is then applied to the motor. The phase-shifting voltage generated by the SLA7075MR ensures smooth rotation of the motor with less vibration. This control mode also allows precise speed control of the motor.

In the phase-lock control mode, the SLA7075MR uses the PWM signal to constantly adjust the phase duty ratio of the motor. The phase duty ratio is adjusted according to the position of the rotor. This allows the motor to operate with a quiescent current, thus preventing stall speed during low torque operation.

The motor driver also features various protection features, such as overcurrent protection, undervoltage lockout protection, overvoltage protection, and thermal protection. These features help to protect the motor from damage and make sure the motor operates properly.

Conclusion

The SLA7075MR is an advanced motor driver IC developed by Sanken Electric Co. Ltd. It is capable of driving a variety of motors, from nominal 3.2A peak to 35.4V peak operation applied to brushed, DC brushed brushless, and AC Step motors. It uses an advanced mixed-mode control method and can be used to achieve high-accuracy position control and smooth rotation speed control in the speed range of 0.1 - 10,000 r/min. This motor driver IC is suitable for a range of motors driving applications, including medical imaging, laboratory equipment, robotics, stereo and home entertainment, security and surveillance, automotive and transportation, and industrial automation.

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