E-TEA3718SFPTR Integrated Circuits (ICs)

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PMIC – Motor Drivers, Controllers play an integral role in the power management of electronic components and systems. The E-TEA3718SFPTR is an example of a PMIC from the E-TEA family tailored to the control of 3-phase brushless DC motors. The target applications of E-TEA3718SFPTR are mainly motor control within home and industrial appliances, especially in washing machines, dryers, and dish washers.

The E-TEA3718SFPTR couples an airflow sensor, a Hall sensor, and a 3-phase motor driver. Using a system-oriented approach, the motor driver combines a motor speed/position feedback system, a motor driver under voltage protection (UVLO) as well as a control system based on the control loop feedback information. The device offers several key features that facilitate implementation, including a PWM regulated motor speed, pre-defined programs for different washing requirements, and a fault detection system preventing motor damage.

Part of the main features of the E-TEA3718SFPTR is its 3-phase driver, which uses an internal logic system and requires only two external voltage sources for its activation. The driver circuit integrates a current-mode control and diode-emulated mode control timing, as well as a self-driven low-side transistor gate driver for low power consumption. The device capabilities are further extended through the inclusion of a simple start-stop and reset mode. While controlling the motor, the E-TEA3718SFPTR also monitors temperature, current, and the motor speed.The controller ensures safety with over-current and short-circuit protection including a circuit breaker. It also includes an external UVLO protection feature to prevent current overload.

The motor controller in the E-TEA3718SFPTR is also equipped with an 8-bit microprocessor core and a programmable logic with four programmable I/O channels. This allows for the implementation of customized motor control algorithms depending on the application. The device’s pre-defined programmable functions provide an easy way to optimize the motor’s performance. The I/O channels are configurable through the internal firmware and the on-board user interface. An optional terminal adapter is provided for easy communication interface for the device.

The E-TEA3718SFPTR also provides protection for the motor by using thermal and current protection. Thermal protection measures reduce the strain on the motor due to excessive temperature changes, while current protection features include an over-current detection circuit, an over-voltage lockout, as well as an open-circuit protection.

Overall, the E-TEA3718SFPTR provides a high level of motor drive performance with its multiple programmable logic and protection features. Furthermore, by supporting both single and three-phase operation, the E-TEA3718SFPTR helps to reduce component costs and improve motor operation. This makes it ideal for the control of brushless DC motors in a variety of home and industrial appliance applications.

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