The L6235Q from STMicroelectronics is a fully integrated solution specifically designed for driving three-phase brushless DC motors. This advanced power system integrated circuit (IC) combines a DMOS three-phase bridge, a constant off-time PWM current controller, and decoding logic for single-ended hall sensors that facilitates a reduction in the number of external components required.

Key Features:

• Operating Voltage Range: The device operates over a wide supply voltage range from 8 V to 52 V, making it suitable for a variety of applications.
• High Output Power: It can provide up to 2.8 A of output peak current (1.4 A r.m.s.), ensuring robust performance for demanding applications.
• Integrated Protections: The L6235Q includes a range of protection features such as overcurrent, thermal shutdown, and undervoltage lockout, which contribute to the overall reliability and safety of the motor control application.
• Non-Dissipative Overcurrent Protection: A unique feature that helps to safeguard the device and the motor from extreme conditions without the dissipation usually associated with current limiting.
• Programmable Off-Time: The constant off-time PWM current controller allows for adjustable current control parameters to match specific motor characteristics and application requirements.

Applications:

The L6235Q is ideal for a wide range of applications requiring precise and efficient motor control, including:

• Office Automation
• Industrial Automation
• Robotics
• Control of 3D Printer Motors
• Fans and Blowers in Consumer Electronics

Conclusion:

With its robust design, comprehensive protection features, and ability to drive a variety of three-phase brushless DC motors, the L6235Q from STMicroelectronics represents a versatile and reliable solution for advanced motor control applications. Its integration of multiple functions into a single package simplifies the design process and can lead to a reduction in system size and cost, making it an excellent choice for designers looking to optimize their motor control systems.