CJ66BLY

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An important component of many motor systems is the current sensor. CJ66BLY is an integrated current sensor developed and manufactured by CJMCU. It is an intelligent sensor device, which provides an ultra-wide range of current sensing solutions for both inside and outside the motor system, such as motor current protection, motor control, DC/DC power supply and rectifier circuit monitoring, for applications such as medical, consumer electronics, power generation, automation control, new energy vehicles and many other industrial applications. It is an ideal choice for engineers to design current sensor based systems.

CJ66BLY incorporates a novel ASIC technology which is deeply optimized for precision current sensing, allowing it to accurately detect the current flowing through the sensing terminals. The built-in on-chip EEPROM can store up to 16-bits of setting data, which can be used to adjust the sensitivity and resolution of the sensor. It can also be used to calibrate the zero-set point voltage and current range. The sensor stage is optimized for wide working voltage range (2.5 V to 5.5 V) and high accuracy current reading (±2%) up to 6.5A. It also provides low power consumption, fast speed, high linearity, and low temperature drift.

CJ66BLY sensor can be broadly divided into two distinct application fields: motor current protection and motor control. In the field of motor current protection, CJ66BLY is capable of monitoring the current through the motor, detecting any over-current and over-voltage situation, and disconnecting the load from the power supply by means of activating a fused circuit breaker. This ensures the safety of the machine in case of any unexpected over-current or over-voltage condition. Furthermore, CJ66BLY can also be used in the field of motor control. It can be used to detect the current flow through the motor and use this information to accurately control the speed, voltage and torque of the motor. It can be used to accurately control the speed of the motor in order to increase the efficiency of the system.

The working principle of CJ66BLY is based on the Ohm’s law. The sensing terminal of the sensor is placed in parallel with the load and the sense current flow flowing through the sense terminals is converted into a proportional voltage. This voltage is then amplified and compared with a reference voltage, and the difference is used to accurately determine the current flowing through the sense terminals. The amplified signal is then converted into digital signal by the integrated ADC, and the value is compared with the programmed threshold values. The corresponding output action is then taken accordingly.

To summarize, CJ66BLY is a highly integrated and compact current sensor, designed to provide precision current sensing solutions for motor control and motor current protection applications. It features wide working voltage range, high linearity, low power consumption, fast response, low temperature drift and programmable gain. The built-in EEPROM can store up to 16-bits of settings which can be used to adjust the sensitivity and resolution of the current sensor. The working principle of CJ66BLY is based on the Ohm\'s law, where current is converted into voltage by a sense resistor, and this voltage is then amplified and converted into digital output. CJ66BLY is an ideal choice for engineers to design current sensor based systems.

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