LB11822-E

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PMIC - Motor Drivers, Controllers - LB11822-E is a single channel H bridge motor driver specifically designed for brushless DC and step motors. It is mainly used for controlling small and micro speed and position rotation in electronic equipment such as 3D printer, robots, office equipment, and toys. This motor driver ensures high performance, efficiency, and cost savings by allowing higher motor speed, higher motor torque, and more precise motor control.

The LB11822-E employs a Functionally Safe FET driver to achieve advanced level protection. It works on the principle of electrical power dissipation or electrical power loss in an on-state as it controls from low voltage to high voltage. The switching action of an FET driver causes the current in the motor’s windings to rise to only a set value regardless of the load on the motor, leading to low losses and improved power efficiency.

The logic of the LB11822-E is controlled by three inputs - DIR, EN and PWM. The DIR signal is used to control the direction of the motor, the EN signal is used to enable and disable the motor, and the PWM signal is used to set the motor’s speed. The LB11822-E also features a built-in preamplifier and current feedback, which improves its performance by correcting the current flow in the motor winding.

The LB11822-E supports two modes of driving, namely open-loop and closed-loop mode. The open-loop mode allows the motor to be driven in a predefined speed while the closed-loop mode allows the motor to be driven in an adjustable speed range. The motor’s speed is adjustable in the range of 0 to 1000Hz by an external PWM input signal. When the external PWM signal is zero, the motor will stop driving.

The LB11822-E also features overcurrent protection and thermal shutdown protection. If the current from the motor exceeds its maximum allowed value, then the LB11822-E will turn off the FET driver and shut down the channel until it cools down. The LB11822-E also features programmable frequency and current limiting, which can protect the driver from currents that exceed the predetermined limit.

In conclusion, the LB11822-E is a reliable single channel H-bridge motor driver specially designed for brushless DC and step motors. It is cost effective and offers high performance, efficiency, and safety by allowing more precise motor control. The LB11822-E can also be used with external components such as frequency and current limits, further enhancing its performance while still providing a high level of safety

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