LB11651-E

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The LB11651-E is a highly integrated single-channel BCD MOSFET bridge driver designed for the control, management, and protection of permanent magnet DC motors.

The LB11651-E supports various topologies, such as single-phase, dual-phase, and three-phase DC motors, and provides low standby current, adjustable speed control, built-in protections, soft starter, and adjustable overcurrent, over-temperature protection, and idle current limitation features.

The LB11651-E application field and working principle is best suited for motor control and management, such as automotive downshifting, bike lighting, lawnmowers, and other home appliances.

The hardware and software requirements of the LB11651-E include a crystal of 8MHz internal clock frequency, external voltage source of 12-24V, and analog speed control, as well as input voltage, and external current sensing, which makes it suitable for use in different applications.

The LB11651-E is based on the locked anti-phase drive principle, which is the most commonly used control method for permanent magnet DC motors. This method is characterized by a minimal amount of electrical noise and efficient operation. In order to provide better protection, the LB11651-E also comes with various fault detection and protection functions, such as over-temperature, over-voltage, over-current, and DC offset detection.

The way LB11651-E works is fairly simple. When the two motor phases are connected to the motor terminals, the motor will be energized, allowing it to start running. The speed of the motor is adjusted by PWM duty-cycle from the external analog voltage. The voltage/current detected by the built-in current sensing feature is used to prevent overload of the motor.

LB11651-E is a powerful motor driver and controller, applicable with a wide range of DC Motor applications. In addition to the basic motor control functions, the LB11651-E also provides unique features like built-in soft starter, which helps to reduce the start-up current and to improve the life of the motor, as well as adjustable overcurrent, over-temperature, and idle current limitation functions, to ensure the protection of both the motor and its components.

In conclusion, the LB11651-E is an ideal device for permanent magnet DC motor control and protection. It is a highly integrated device that provides simple and robust motor control with simplified hardware and software requirements. By incorporating its features, it can provide improved speed control, protection, and motor life.

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