MP6518GF

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PMIC (Power Management ICs) are integrated circuits designed to manage the power needs of an electronic system. They are integrated circuits with specialized functions such as voltage regulation, circuit protection, and power conversion to make use of the smallest amount of power. PMIC - Motor Drivers, Controllers are for control of the system response and their functions include motor speed control, current sensing, etc. The MP6518GF application field and working principle is one example of a motor driver controller from the PMIC family.

The MP6518GF is a dual-channel motor driver controller, with a wide input supply range, low quiescent current, and accurate current sense. The application field includes toys and electric tools, robots and electric vehicles. The device is suitable to drive voltage ranges from 2.5V to 28V and is ideal for brushless DC (BLDC) motors and fans. It is also equipped with a dynamic speed control feature, which is useful for consumer applications.

The working principle of the MP6518GF relies on the voltage-based speed control techniques. The device if composed of an error amplifier, an enable input, a gain-adjusting (GA) input, and two power MOSFETs with over current protection. The error amplifier is compared to the reference voltage at the GA pin to create an error signal for speed control. The device then amplifies the signal and propagates it to the motor to modulate the rotation speed. This system also works in reverse and the motor speed is monitored for feedback control, which is then used to alter the reference voltage.

The MP6518GF also has a hybrid sleep mode which helps to extend the system battery lifetime when the motor is not in use. The device switches the gate of the power MOSFET to the low impedance state, thus reducing the current consumption while keeping the voltage regulator active. This mode is incorporated with a low power consumption design gate, making it suitable for toys, portable power tools, and other battery powered applications.

The MP6518GF controller also has several advanced features. It is equipped with thermal shutdown circuitry to protect the system in case of over temperature. It also has advanced current sense which enable the system to achieve higher accuracy when the motor is running. The advanced diagnostics features enable the system to detect fault conditions in the motor and then shut it down or continue to drive with safety.

In conclusion, the MP6518GF application field and working principle are part of the PMIC - Motor Drivers, Controllers family. It is an advanced dual-channel motor driver controller suitable for voltage ranges from 2.5V to 28V and provides integrated solutions for motor speed control, current sense, advanced diagnostics, and over temperature protection. It helps to reduce the power consumption and keeps the motor safe and running for longer times.

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