LBl690 high performance brushless DC motor control circuit diagram
The LBl690 integrated circuit is designed to efficiently control three-phase brushless DC motors, which are known for their high efficiency and reliability. The over-current limiting feature protects the motor and the circuit from excessive current during startup or under load conditions, ensuring longevity and stable operation. The thermal shutdown circuit further enhances the reliability of the system by preventing overheating, which could lead to component failure.
The HALL tape amplifier included in the LBl690 IC is responsible for detecting the rotor position, which is critical for commutation in brushless motors. Accurate rotor position feedback allows for precise control of the motor's speed and torque, contributing to the overall performance of the application. The FG (frequency generator) output circuit provides a signal that can be used for speed feedback or monitoring purposes, facilitating integration with external control systems.
Operating at a maximum voltage of 45V allows the LBl690 to be suitable for a wide range of applications, while the current rating of 2.5A makes it appropriate for various motor sizes and configurations. This versatility, combined with its protective features, makes the LBl690 an ideal choice for modern brushless DC motor control in HVAC systems and other industrial applications.LBl690 is the three-phase brushless DC motor drive control integrated circuit produced by Japanese Sanyo, and it is widely used in domestic and imported broken wind, fresh air-condition brushless DC drive control. 1. FeaturesLBl690 IC has the over-current limiting, thermal shutdown circuit, HALL tape amplifier, FG output circuit.
Pressure is 45V with 2.5.. 🔗 External reference
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