It is used to measure the current of a motor to help monitor and control the motor’s operating status, thereby improving the efficiency and reliability of the motor system. The following are some of the main applications of current sensor chips in motor control applications:
Motor drive control: usually connected to the motor power supply circuit, the current changes are monitored to understand the operating status of the motor in real time. The control system can adjust the speed and torque of the motor according to the current data to realize precise motor drive control.
Overload protection: It can detect the current of the motor exceeding the set threshold, so as to determine whether the motor is overloaded. Once an overload condition is detected, the control system can take timely measures, such as reducing the load or cutting off the power supply, to prevent damage to the motor.
Fault detection: The current waveform of the motor can be monitored to identify abnormalities, such as motor bearing failure, phase failure and other problems. By detecting faults, maintenance measures can be taken in advance to avoid serious problems in motor operation.
Energy consumption monitoring: Through real-time monitoring of the motor’s current changes, the power consumption of the motor can be calculated, thus realizing energy consumption monitoring and management. This is very important for energy management and energy saving optimization in industrial applications.
Closed-loop control: It is often used as a feedback sensor in motor control to provide actual current data for closed-loop control. In a closed-loop control system, the controller can adjust the output of the motor based on the error between the actual current and the target current to achieve a more precise control effect.
The SC780 current sensor enables current conductor impedance as low as 0.08mΩ in the semiconductor sealing process, making it suitable for use in power systems that require continuous operation in measuring up to 200A, with the integration of low impedance side conductors, low hysteresis cores and self-developed linear Hall IC.
The SC813 is a member of Hall current sensor product series. Its differential output mode is convenient for later application, and its ultra-wide dynamic detection ability supports customers to detect the measured current range as low as 1A and as high as 50A. It meets the requirements of users to realize the detection of load current under the condition of insulation and isolation, and is suitable to replace other passive or discrete sensor detection schemes such as power resistor, linear optocoupler and transformer.
Vicorv 's SC840 series is an isolated current detection chip that uses the principle of open-loop Hall sensor detection.The industry's first fully integrated current detection chip that can pass 20kA/8us lightning surge test. This product with the world's first packaging technology, in 10mm*11mm*2.3mm wide-body SOP16 encapsulation on realized as low as 0.2 m Ω current lead impedance,this enables it to be applied to power systems requiring continuous operation at measurements up to 100A.
HK510 is a highly sensitive unipolar Hall switch chip designed based on BCDMOS technology. The chip includes temperature compensation, comparator, and output driver. In addition, mechanical stress has little effect on the magnetic parameters of the chip.
HK421 is a unipolar Hall switch chip with high voltage resistance and high sensitivity, which is designed by bipolar semiconductor technology. The chip is composed of voltage stabilizing unit, Hall voltage generator, differential amplifier circuit, temperature compensation circuit and Open collector output circuit. Working mode: input Magnetic flux density and output digital voltage signal. Provide TO92S inline packaging, SMT SOT23-3L packaging, and all packaging meets RoHS standards.
The VICORV SC810 provides economical and precise solution for differential output mode in industrial, commercial, and communications systems. The superior features of high-sensitivity and wide-dynamic-range bring extra-experience to our customers. Fully integrated SOP-8 package is ideal for space-constrained applications as motor control, load detection and power supplies.