STMicroelectronics L6226D - Dual DMOS Full Bridge Driver

The L6226D from STMicroelectronics is a high-performance dual full bridge driver designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors. It integrates two full bridge drivers with a constant off time PWM current controller that performs the chopping regulation. The device is capable of operating with a supply voltage ranging from 8 V to 52 V, making it versatile for a broad range of applications.

Key Features

• Operating Voltage: 8 V to 52 V
• Output Current: up to 1 A per channel
• Low RDS(on) typically 0.73 Ω per channel
• Programmable high-frequency PWM up to 100 kHz
• Non-dissipative Overcurrent Protection
• Cross-conduction Protection
• Thermal Shutdown
• Under Voltage Lockout
• Integrated Fast Free-wheeling Diodes

The L6226D is designed with an advanced DMOS technology that ensures high efficiency and fast switching times. Its low RDS(on) reduces power dissipation, thereby enhancing the reliability and longevity of the device. The programmable PWM allows for precise control over motor speed and torque, which is critical in applications requiring fine motor control.

With built-in non-dissipative overcurrent protection, the L6226D ensures the safety of the motor by preventing damage due to excessive current. Cross-conduction protection eliminates the risk of short circuits that could occur during the switching phase. The thermal shutdown feature protects the device from overheating, and the under-voltage lockout ensures the device operates within safe voltage levels.

The integration of fast free-wheeling diodes minimizes the need for external components, simplifying the design and reducing the overall system cost. The L6226D is available in a 24-pin SO package, making it compact and easy to integrate into a variety of designs.

Whether driving a simple DC motor, a complex stepper motor, or any other inductive load, the L6226D from STMicroelectronics is an excellent choice for designers looking for a robust, versatile, and efficient full bridge driver solution.