Closed-loop current sensor T60404-M4645 series

PCBACDC

VAC offers a wide range of current sensors for DC and AC measurement in PCB and panel mount versions. All VAC sensors offer the detection of high continuous and peak currents in compact package sizes. Our current sensors are used in many different customer applications, the most typical being: - Variable speed drives - Photovoltaic inverters - Wind power converters - Welding inverters - Switched mode power supplies - Uninterruptible power supplies The VAC - invented principle of a closed loop current sensor with a magnetic probe (aka flux gate probe) as the zero field detector is distinguished by maximum precision of the current detection. The electronics for passive VAC current sensors is built up outside the sensor. However, since it is mainly concentrated the application specific IC DRV401, only a small number of components are required on the application’s PCB and the circuit design is quite easy for a +5V –supplied current sensor with a voltage output. Hence more electrical and mechanical freedom of design and a number of supplemental functions of the IC can be used: - start a demagnetization cycle of the sensor magnetic core at any time to optimize the output signal offset, e.g. at power-up or after a short circuit induced overcurrent. - indicate errors such as wire breaks or shorts in the sensor module as well as a supply voltage brownout. - indicate overcurrent without consulting the analog output signal. - adapt the output voltage level by free choice of the measuring resistor value (not possible with integrated sensors). - place the sensor control electronics close to the A/D converter and thus at a distance to the sensors module for better EMC compliance.