Modern power conversion systems must be more efficient,compact,and affordable compared to the previous generation.Therefore,the global leader in the field of electricity sensors,Swiss company Lyme,has utilized years of rich experience to develop a single chip packaged sensor-HMSR,which is a more advanced current sensor that meets the market’s continuous demand for cost reduction,performance improvement,and miniaturization.
The new HMSR product integrates primary conductors(minimizing power loss),a miniature magnetic core,and a custom ASIC,allowing direct current measurement and ensuring certain insulation performance.
Product characteristics:
Contains six different rated current levels:6A,8A,10A,15A,20A,and 30A,with a measurement range of up to 2.5 times the rated current;
Adopting SOIC 16 packaging;
The corresponding output voltage of the 5V power supply version is 800mV IPN；
Two OCD(overcurrent detection)functions-internal OCD,with an overcurrent limit set to 2.93 x IPN,and external OCD.The overcurrent limit can be adjusted by the user according to the actual situation;
The primary conductor design allows for greater overload current to flow and maintains a high level of insulation performance;
The bandwidth can reach 270 kHz(-3dB);
Ensure high accuracy within the temperature range of-40°C to+125°C;
The typical accuracy value at rated current is 0.5%.
The HMSR series current sensor,designed with a single power supply,is a miniaturized chip mounted current sensor applied on the DC side.Its volume is smaller than the traditional HLSR series,and the power requirements for photovoltaic panels are not as high as before,with lower power consumption.At the same time,it can achieve a wide range of measurement requirements,basically meeting the continuous cost reduction needs of the entire photovoltaic inverter customer.
