STK625-728M-E

The STK625-728M-E is a type of PMIC (power management integrated circuit) motor driver, controller, specifically designed for use with DC or motor stepping motors. It is a robust, universal motor controller with integrated power components, and provides low on-resistance and current limit protection. The IC is equipped with an integrated driver stage and a digital pulse output stage, as well as over-voltage, under-voltage and short-circuit protection circuits. In addition, it features low power consumption and a large number of features that make it suitable for a wide range of applications.

Application Field

The STK625-728M-E is a versatile PMIC and can be used in various applications. Some examples of the applications of the IC include:

• Robot and automation equipment
• Industrial control and process equipment
• Computer peripherals
• Medical equipment
• Printers and labelers
• User interfaces
• Surveillance equipment
• Electric wheelchair, etc.

In addition to these, the IC can also be used in other applications where a DC motor driver or controller is needed, such as in garage door openers, door access systems, surveillance camera systems, industrial process controllers, etc.

Working Principle

The STK625-728M-E is a 3-phase motor driver and controller. It is designed to operate at a frequency that can be set from 0 to 20 kHz with a resolution of 0.1 kHz, and a maximum input voltage of up to 20 V. The IC is equipped with power MOSFET and an integrated driver stage, with an operating temperature range of -40°C to 85°C.

The STK625-728M-E uses a PWM-type control signal, which is generated from a DAC or a microcontroller or other external controller. The signal passes through a voltage-mode controller before reaching the motor driver. The signal is then amplified and transformed into three phase sine waves which can be used to drive the motor. The current feedback value is fed back to the PWM control loop so that the duty cycle of the PWM signal can be adjusted accordingly.

In addition to current and voltage protection, the IC features an under-voltage lockout, soft start, and over-temperature protection. It also supports both current source and voltage source DC motors. The IC is equipped with an integrated digital system, which includes a fail-safe timer, an overdrive control, and a rotary position interrupt.

Conclusion

The STK625-728M-E is a versatile PMIC motor driver and controller, designed to provide maximum reliability and efficiency in a wide range of applications. It features a robust design with integrated power components, low on-resistance and current limit protection, as well as other safety features such as over-voltage, under-voltage and short-circuit protection circuits. In addition, it has a large number of features, making it suitable for a wide range of applications.