High precision - Hall sensor - Manufacturer [Wekeway]

Hall Current Sensor It is a choice with higher accuracy and smaller size, which can operate under DC conditions and measure the total AC current including registration and shutdown with outstanding linearity and accuracy. The volume of the Hall effect current sensor can be packaged in SOIC-8, with the same integrated IC of the same size, making the PCB layout simpler and helping to achieve higher power density.

Power factor calibration in telecommunications rectifiers and server power supply units (PSUs)（PFC circuits and inverter circuits both require the detection of current signals from the high voltage side to the controller located on the low voltage side, thus requiring the use of barrier type current sensors. There are various methods to achieve blocking current detection, such as current transformers(CT)Barrier amplifier and Hall effectcurrent sensor . Among them, Hall effect current sensors have become an ideal choice due to their simplicity, ease of use, accuracy, small size, and DC detection capability.

In the layout of circuit boards using Hall effect current sensors, these factors should be taken into accountTry to increase the copper coating area of the primary side current wire as much as possible, which can improve the heat dissipation ability of the Hall current sensor and thus increasesensorThe maximum average current tolerance. In addition, thicker copper foil PCBs can be used, or some heat dissipation vias can be placed on the primary wiring, or the Hall current sensor and PCB wiring can be placed in the air duct to improve the average current tolerance of the Hall current sensor. When laying out, try to avoid high current wires coming close to each other as much as possibleHall Current Sensor . Considering the overall system creepage distance and electrical clearance, when the Hall current sensor cannot meet the required PCB creepage distance, grooves can be dug on the circuit board to achieve system level isolation requirements.