L9904TR

PMIC - Motor Drivers, Controllers

The L9904TR is an integrated, 3-phase brushless DC motor driver and controller specifically designed for automotive applications. It is capable of controlling and driving brushless DC motors with an asynchronous three-phase, current-based design. The main features of the L9904TR include a high-efficiency current-mode control loop, three adjustable over-current protections, and three integrated Hall-effect sensors for motor speed feedback.

L9904TR Features

The main features of the L9904TR include a high current mode control loop. It also has three adjustable over-current protections for safe operation, ranging from 20A to 60A. The L9904TR also comes with three integrated Hall-effect sensors for motor speed feedback that provides closed loop control. It also supports PWM speed control, as well as sine-wave commutation and six step commutation modes. Additionally, the L9904TR also comes with selectable current surge protection, and active shoot-through protection.

L9904TR Application Fields and Working Principle

The L9904TR is suitable for a wide range of automotive applications, such as sunroofs, fan speed control, power seat adjustment, power/telescopic mirrors, and engine cooling fans. It also facilitates electromagnetic compatibility, eliminating the need for bulky external components such as external shunts. The combination of two L9904TRs can be used in 12V, 24V and 48V systems, with input voltage ranging from 6V to 42V. The MCU interface of the L9904TR supports PWM speed control, which can be implemented in microcontrollers for speed control. It also supports sine-wave commutation and six-step commutation modes, which utilizes three Hall-Effect sensors for motor speed feedback. The output current of the L9904TR can be adjusted through software programming, with a range of 20A to 60A depending on the application requirements. The integrated current sensing circuit can be used to monitor motor current, as well as providing over-current protection.

The L9904TR combines an efficient power stage, as well as powerful control algorithms to achieve high-efficiency brushless DC motor control. The high-efficiency current-mode control loop provides precise control of the motor current, and the integrated Hall-Effect sensors provides accurate motor speed feedback. Additionally, the integrated current sensing circuit provides over-current protection, ensuring the safety of the motor and motor driver. With the integrated features of the L9904TR, it is capable of controlling a wide range of motors with an asynchronous three-phase, current-based design.

Conclusion

The L9904TR integrated brushless DC motor driver and controller is an efficient solution for automotive applications, with a range of features including a high-efficiency current-mode control loop, three adjustable over-current protections, and three integrated Hall-effect sensors for motor speed feedback. The L9904TR is suitable for a wide range of automotive applications, and is capable of controlling a wide range of motors with an asynchronous three-phase, current-based design. It also provides over-current protection and active shoot-through protection, ensuring the safety of the motor and motor driver.