LH1670H1

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LH1670H1 is an integrated circuit developed by the company STMicroelectronics. The purpose of this device is to help automotive and industrial applications to control small motors and encoders, as well as to provide useful signal conditioning functions for applications involving speed and position measurement or control. It includes three essential functions: current sensing, voltage isolation and logic control.

In terms of its application field, the LH1670H1 is used to control the speed and position of small motors. In particular, the device is suitable for brushless DC motors, stepping motors and linear actuators. This is made possible by the inclusion of integrated logic control and advanced control features such as variable speed control, load sensing, alarm detection and advance protection. Additionally, the device is well-suited for automotive applications where accurate control is needed for the operation of an electronic power steering system.

The working principle of the LH1670H1 involves the use of current sensing and voltage isolation techniques. In regards to current sensing, it uses a low-side current sense resistor to measure the electrical current in the load. This data is then transferred through a voltage isolator to the logic control section of the device, where the position and speed information is obtained. The logic control section also includes digital circuit elements such as timers and counters which are used to control the speed and position of the motor.

As for voltage isolation, this technique involves the use of transformer or optocoupler-based isolators, which isolate the high-voltage and ground signals from the logic control section. This prevents any damage to the control section should the high-voltage or ground signals become too high or too low. The voltage isolator also provides a level-shifting function, enabling the logic control section to receive signals from the motor at different voltage levels.

In conclusion, the LH1670H1 is a versatile and reliable integrated circuit which is used for controlling the speed and position of small motors. It incorporates a current sensing function and voltage isolator to accurately measure the electrical current and level-shift signals from the motor. The device also has an integrated logic control section which enables variable speed control, load sensing, alarm detection, and other advanced control features. All these features make the LH1670H1 a powerful and reliable control device for automotive and industrial applications.

The specific data is subject to PDF, and the above content is for reference