TC655EUNTR

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PMIC (Power Management Integrated Circuits) is a general term to describe a variety of different integrated electronic components. One type of PMIC is Motor Drivers, Controllers, which allow different electrical devices to be controlled. TC655EUNTR is a popular device in this category. This application note describes the field of application and working principle of the TC655EUNTR device.

Application Field

The TC655EUNTR is a device that is specifically designed for use in industrial, automotive and marine applications. It is an ideal choice for applications with high-current, low-voltage requirements as it has an operating range of 1.8V to 5.5V. It has a built-in current protection that can be adjusted from 1A to 3A, and its peak output current is up to 5A. Additionally, it has the ability to sense the current across the device, meaning that it can be used to monitor current levels during operation. This makes it particularly suitable for motor controlling applications.

The device also includes a wide range of integrated protection features including temperature protection and over-current protection. It also has low-power sleep mode and is capable of handling PWM frequencies up to 25 kHz. The integrated pull-up resistors and diodes make it easier to connect to system components, and its tight package makes it suitable for space-constrained applications. All of these features make the TC655EUNTR a great choice for motor-driven applications.

Working Principle

The TC655EUNTR device includes two terminals, S-terminal and Gate terminal. The S-terminal is the power supply terminal, and the Gate terminal is a high-side switch terminal. When the Gate terminal is low, the internal power MOSFET remains off and the motor is not powered. When the Gate terminal is high, the MOSFET is turned on and voltage is supplied to the motor.

The current sense circuit in the TC655EUNTR allows for current control by sensing the voltage drop across the power MOSFET. When the current exceeds the upper threshold limit, the device automatically turns off the power MOSFET and the motor stops turning. This provides a robust protection mechanism for ensuring the motor does not overheat or cause damage.

The device also features a built-in pulse-width mode (PWM) control. This allows for precise motor speed control and is particularly useful for applications where the speed needs to be regulated. The device has an adjustable frequency of up to 25kHz, and the duty cycle can be adjusted using the two resistor R1 and R2.

The TC655EUNTR is an extremely versatile and powerful device that can be used to control various motors in different applications. Its integrated current protection and PWM control make it ideal for motor-driven applications. It is robust, reliable, and easy to use, making it a great choice for users looking for a reliable motor control solution.

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