L6228PD Integrated Circuits (ICs)

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The L6228PD is a motor controller and driver used to control brush DC motors from STMicroelectronics. It is the world’s first integrated three-phase motor-control solution with a built-in high-performance dsq current-sense amplifier. The device is designed to interface directly with a microcontroller, providing a complete motor control solution without the need for external sensing, drivers or power components.

The L6228PD is well-suited for use in automotive, industrial and consumer applications including automotive window lifts, power tools, pumps and fans. It is capable of controlling a variety of motors, including permanent magnet, stepper, variable reluctance and brushless DC motors.

The L6228PD includes a range of features to provide advanced motor control, such as a temperature sensor to guard the embedded MOSFETs from overheating, a current control circuit for precise current control even with rapid changes in load, and an adjustable speed regulation loop for improved performance. The device also offers protection functions such as over-voltage, under-voltage, over-temperature shut-down, and brown-out protection.

The L6228PD is based on a three-phase boost converter circuit, which is used to efficiently regulate the speed and current level of the motor. The output voltage of the device is automatically adjusted in real-time based on the input voltage and the current level of the motor. This provides precise motor control and high efficiency, even when the load current is rapidly changing. As the output voltage is regulated to maintain the motor’s operating current level, the speed of the motor is also regulated.

The device includes four integrated MOSFETs and seven configurable gate drivers which are used to control the MOSFETs. The four MOSFETs combine to provide a high level of drive current for the motor, while the gate drivers are used to drive the gates of the MOSFETs in order to control their on and off states. The seven configurable gate drivers allow the device to be programmed according to the specific application and motor requirements.

The integrated dsq current-sense amplifier allows the L6228PD to accurately detect and monitor the output current of the motor. This provides precise control of the motor’s current level, allowing the device to adjust the output voltage in order to maintain a constant output current.

The device can be programmed using the built-in SPI interface. This allows the user to adjust the device’s parameters according to their specific motor control requirements. The SPI interface can also be used to read back data from the device, such as the motor’s operating current level and the output voltage level.

Overall, the L6228PD is a comprehensive motor control solution for use in a variety of applications. Its integrated three-phase boost converter circuit provides efficient operation and precise motor control, while its integrated dsq current-sense amplifier and configurable gate drivers allow the user to customize the device according to their specific needs. It is well-suited for use in automotive, industrial and consumer applications.

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