Overview

Isolated measurement, isolation voltage up to 5kV @ 50Hz, 1 minute

It can measure DC and AC current

Minimum current conductor impedance: 0.3m Ω

Surge current withstand capacity of 20KA 8 / 20us

Support Voit – VREF differential output mode

Built in fixed reference, not affected by power supply voltage fluctuation

Response time as low as 2us wide working temperature range: - 40 ℃ ~ 125 ℃

Wide range of measured current: 20A ~ 125A

High precision: accuracy error less than 1% at normal temperature, working temperature zone:

Strong driving ability, support output port connected to 2K Ω load

Extremely simple peripheral circuit

It is not disturbed by wire magnetic field, external magnetic field and geomagnetic field

High PSRR

From chip to assembly, independent research and development, no technology dependence


Xz7641 is a member of Xinggong micro fully integrated current sensor product line. It is the industry's first fully autonomous and controllable open-loop Hall current sensor module developed from chip design to module assembly process. Its differential output mode and up to 2us response speed bring perfect application experience. Xz7641 series of Xinggong micro is an isolated current detection chip based on open-loop Hall sensor detection principle. The current wire at the high voltage side is introduced into the package body. Based on the magnetic effect of current, the equivalent magnetic field generated around the measured wire is polymerized by the magnetic core. After being induced by the magnetic sensor with the built-in chip, it is converted into a processable equivalent voltage signal. The voltage signal is read and amplified by the built-in high-precision ADC, and combined with the digital calibration technology, such as temperature, noise and hysteresis are removed Finally, the voltage value which is close to the ideal ratio of the measured current value is output to realize the isolated current measurement. The product adopts the secondary assembly process, which integrates low impedance primary conductor (0.3m Ω), low hysteresis core and self-developed linear Hall IC. Its unique reference pin supports differential output or synchronous input mode, which will greatly simplify the requirements of application circuit and improve the performance of signal processing and measurement functions. The conductor of conductive path and weak current signal line are isolated by insulating material, and the creepage distance and gap are greater than 8mm. Xz7641 adopts semi-automatic production and processing technology, and can bring high consistency, high quality and high reliability to customers through programmable Hall IC. The product can be used for AC or DC current measurement, widely used in UPS, SMPS, combiner box, MPPT, OBC and other new energy, commercial and communication systems. Xinggong microelectronics is committed to the research of core chip technology, in order to bring customers the best current detection solutions for the purpose.

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XZ7641

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