STK672-533-E

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Power Management Integrated Circuit (PMIC), or PMIC, is an integrated circuit that combines multiple power management functions into one device. The STK672-533-E is a high performance PMIC for medium- and low-power applications, specifically for motor drivers and controllers. This PMIC can deliver up to 40 A current and can be used in both single-phase and three-phase motor applications.

Application Field

The STK672-533-E is a 12A/40V dual-output H-bridge step motor driver. This PMIC can be used in motor applications with wide speed range, low operating current and higher efficiency. The PMIC is designed to drive a DC motor or stepper motor with three phase bridge or two phase bridge. It is also suitable to drive switching type linear motor.

This PMIC can be used in various applications such as industrial equipment, home appliances, office automation, etc. It can be used in automotive applications like car audio systems, door locking systems, seat adjustment, window operations, etc. It is suitable for applications where a medium- and low-power motor driver is needed and can be used in both linear and sparse-logic control systems.

Working Principle

The STK672-533-E uses pulse width modulation (PWM) to vary the speed and torque of the motor. It works on the principle of controlling the time the motor is on and off. In a single-phase application, the motor is on when the PWM is high and off when the PWM is low. This PMIC uses a pair of low-side linedriver and high-side linedriver ICs. The ICs enable the circuit to drive a stepper motor or a brushless DC motor.

The STK672-533-E can also be used in three-phase motor applications. In this case, the PMIC uses three full-bridge drivers, each of which is made up of four transistors. This circuit can achieve higher speeds because the motor will be powered all the time until a signal is received from the controller, after which the driver will stop powering the motor. Thus, the PMIC can deliver higher velocity with lower power consumption.

The PMIC also features a sleep mode function, which reduces power consumption when the motor is not in use. All I/Os feature built-in protection, allowing for more efficient energy management. It also features pre-programmed acceleration and deceleration functions, and can be programmed with up to six acceleration and deceleration configurations. This makes it suitable for applications that need to control the speed of the motor in an efficient way.

Conclusion

The STK672-533-E is a high performance PMIC for medium- and low-power applications. The PMIC can deliver up to 40 A current and can be used in both single-phase and three-phase motor applications. It also features PWM enabled motor speed control, sleep mode, built-in protection and can be programmed with up to 6 acceleration and deceleration configurations. This makes it suitable for a wide range of motor applications, including industrial equipment, home appliances, automotive applications and office automation applications.

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