LB11867FV-MPB-H

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Power Management Integrated Circuit (PMIC) - Motor Drivers, Controllers, are integrated circuits that help provide power and control to motors used in various applications. One example of a PMIC is LB11867FV-MPB-H, a three-phase brushless DC motor driver made by ROHM. This circuit is designed to drive both conventional and brushless DC motor types and provides various functions such as full-speed control, PWM frequency selection, dead-time setting, and output current protection functionalities. Here, we will look at the application fields and working principles of the LB11867FV-MPB-H.

The LB11867FV-MPB-H can be effectively used in a variety of applications, from consumer products such as air conditioners, fans, and white goods to larger industrial products such as water pumps, motors, and more. The LB11867FV-MPB-H can also be used in automotive motor control applications such as power seats and window lifts. In terms of motor types, the LB11867FV-MPB-H is suitable for driving permanent magnet brushless DC motor types up to 300 W and conventional DC motor types under 100 W. It can also be used as a power-supply unit for a sensorless vector-type 3-phase driving system with a rotation angle detection circuit.

The working principle of the LB11867FV-MPB-H is based on several components, including a control circuit, drive circuit, and output voltage detection circuit. The control circuit consists of an external modulation circuit and internal trigger turn-on circuit which controls the drive circuit. The drive circuit is designed to drive the power transistors with a built-in circuit, which supplies them with a high-level drive current with low saturation voltage. The output voltage detection circuit consists of an oscillator, comparator, and optical coupler, and ensures that the desired voltage is reached before powering the motor.

In addition to its power and control features, the LB11867FV-MPB-H also has a variety of safety features which help to ensure safe operation. These features include the built-in over-current protection circuit, over-voltage protection circuit, and under-voltage protection circuit, all of which help to minimize the risk of damage to the motor and associated components. The LB11867FV-MPB-H also features a thermal shutdown circuit, which will shut down the motor driver when the ambient temperature reaches a certain level.

The LB11867FV-MPB-H is an extremely versatile motor driver and controller, which can be used in a variety of applications and motor types. By offering several safety measures and efficient control, the LB11867FV-MPB-H ensures reliable, safe operation of motors and other machinery in a variety of applications.

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