LB11922-TLM-E

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PMICs provide power management solutions for various microelectronic components and devices. The LB11922-TLM-E is an example of such a device, providing a motor driver, controller, and robust low-noise performance. This integrated power module supports voltages up to 36V in a variety of applications. It is small in size and optimized for commonly used brushless dc and stepper motors.

Applications

The LB11922-TLM-E is optimal for use in washing machines, cooling fans, and other home or industrial applications utilizing brushless dc and stepper motors. Additionally, it may be used in an array of automotive applications, such as air conditioning compressors, steering motors, and wiper motors. It is also applicable for robotics, such as industrial robots, medical diagnostic equipment, and automatic production lines.

Working Principle

The LB11922-TLM-E is powered by a single-voltage power supply. It features a monolithic three-channel H-bridge driver, as well as a built-in 100 mΩ N-channel MOSFET and 100 mΩ P-channel MOSFET. The device is rated to 36V peak and 15A continuous, with a minimum 10% off-time setting. The device has both analog and digital controllers. These controllers enable various motor control modes including forward-rotation, backward-rotation, stop, slow-start, and triangular-wave commutation.

The analog control pins allow hardware or software RPM settings or fine-tuning of the drive current. Additionally, the onboard PWM timer supports pulse width modulation from 8kHz to 130kHz and commutation frequency of 16kHz to 150kHz. The LB11922-TLM-E features automatic current decay, the ability to detect undervoltage and overcurrent, frequency modulation, a serial interface, and more.

Conclusion

The LB11922-TLM-E is an effective solution for powering applications using brushless dc and stepper motors. Its robust performance and low-noise operation make it well-suited for a variety of environments, from home and industrial to automotive and robotics. Furthermore, its analog and digital controllers, extended voltage range, and additional features make it an attractive power module for many applications.

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