LM628N-8/NOPB

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Power management integrated circuits (PMICs) provide ways to regulate currents and voltages and are used in a variety of electronic applications. The LM628N-8/NOPB is a PMIC device used for motor driving and control. In this article, we will discuss the application field and working principle of the LM628N-8/NOPB.

The LM628N-8/NOPB is an advanced motor control integrated circuit, designed with features that simplify the control of complex multiphase drive systems. It can be used in a wide range of applications, including fans and pumps. The LM628N-8/NOPB is an 8-channel integrated circuit containing 8 identical high-performance half-bridge gate drivers. It has been designed to drive brushless DC (BLDC) motors as well as other types of motors such as three-phase brush DC, four-phase brush DC and stepper motors.

The LM628N-8/NOPB\'s gate driver outputs can operate from a single power supply from 8V to 25V and are capable of delivering sink-source current up to 1.5A. Its Pre-Driver Inputs accept either TTL or a wide range of logic levels from 3.3V to 18V. It can be used with a variety of motor control topologies, including six-step, sinusoidal, and trapezoidal styles.

The LM628N-8/NOPB simplifies the design of motor controls by providing a set of built-in functional blocks, such as brake logic, dead-time control, voltage and current sense, current speed regulation, adaptive slip control, pulse-width modulation (PWM) control, and incremental encoder interface. These features are all individually programmable, allowing the user to customize their motor control design to perfectly suit their application.

In addition to the features listed above, the LM628N-8/NOPB also includes a variety of protection features. These include overcurrent, overvoltage, undervoltage, thermal shutdown, and overtemperature protection. These features ensure that the motor is properly protected and that the system operates safely and reliably.

The LM628N-8/NOPB\'s main advantage is its ability to reduce system cost and complexity by integrating functions into a single, small package. It is suitable for a wide range of motor control applications, from industrial automation to consumer appliances, control devices, and automotive applications.

The working principle of the LM628N-8/NOPB can be broken down into three main steps: energizing the motor, controlling the current and voltage, and monitoring the motor. To energize the motor, the device\'s gate drivers must first receive a pulse signal. This pulse signal is then used to turn on the transistors and apply voltage to the motor. Once the motor is energized, the LM628N-8/NOPB begins to monitor the motor\'s current and voltage and adjust them as necessary, ensuring that the motor is performing at peak efficiency.

The LM628N-8/NOPB also includes a few other important features. It can integrate integrated sensors to monitor motor torque and speed, and provide feedback for the control algorithm. Additionally, it has an integrated processor to control the microcontroller and an optional solderable terminal can be used for connection with the external resistors in order to extend the current sensing range.

In conclusion, the LM628N-8/NOPB is a powerful and versatile PMIC device that is used for motor driving and control. It integrates a variety of features and functions into a single, small package and is suitable for a wide range of applications. The device\'s simple yet comprehensive monitoring, control, and protection features make it an ideal choice for motor driving and control applications.

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