A3936SEDTR-T Integrated Circuits (ICs)

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The A3936SEDTR-T is a monolithic integrated power conversion circuit that provides motion control for brushless DC and three-phase DC motors. It is designed for applications where control must be precise, require fast response and with minimal external components. The integrated chips contains all necessary components to generate three-phase gate signals, including power MOS driver, current sense amplifier, and linear current controllers. It also includes a low voltage drop current sense amplifier, which offers improved efficiency and current regulation.

The A3936SEDTR-T can implement a variety of control algorithms such as sensorless speed control, position control, constant speed control, and torque control. It is suitable for applications such as fans, blowers, pumps and automotive motors. The A3936SEDTR-T is a two-stage controller that can achieve high speed control accuracy and support silent motors as well as high performance motors.

This controller is available in a linear current and charge mode, allowing the user to configure the output to operate in either a continuous or burst-mode current state. The linear current mode features a robust current regulation with precise resolution, offering accurate control over the motor current. The burst-mode current mode is better for power saving applications, as it limits the amount of current applied to the motor.

The A3936SEDTR-T operates from a wide input voltage range from 2.5 to 5.5V and can provide up to 3A of output current. It is also programmable for power saving operations and has 8-bit resolution for precise current control. The device supports integrated fault protection features such as over-current, undervoltage lockout protection, and thermal shutdown.

The A3936SEDTR-T has a fully programmable motor drive system. It is capable of operating in either a motor-driven or load-driven mode. In motor-driven mode, it can be combined with external motor drivers and current sensing circuits to deliver precise closed-loop motor control. In load-driven mode, the device acts as a load regulator and autonomously controls the motor current. For example, in a current control application, the A3936SEDTR-T will dynamically adjust the motor speed to maintain a pre-determined current.

The A3936SEDTR-T also supports a PWM interface, allowing the user to quickly and easily configure the motor speed. The integrated driver features a configurable dead time and output skew circuit, which is essential for high performance applications. The device also has a programmable charge pump current Regulation, allowing the user to configure the maximum motor current.

Overall, the A3936SEDTR-T is an ideal solution for high performance motor control applications. It is designed to deliver accurate and reliable motor control with minimal external components and design effort. Its programmability and wide range of features provide an easy to use, reliable and efficient solution for motion control applications.

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