Inverters and DC/DC battery chargers for electric and hybrid vehicles require smaller space and higher power density per cubic centimeter using the new Gru-14.4Mo-3 produced by a Spanish manufacturerElectric vehicle current sensor. Correct switch management requires more digital control than traditional PWM, and real-time high-frequency sampling of the current flowing through the primary circuit is a necessary condition for high-speed expected control systems. The sensor is designed with a sampling frequency of 200kHz. The design of CS-100-AU features a low loss and high temperature stability annular ferrite core, allowing operating frequencies above 200 kHz at temperatures ranging from -40 º C to 155 º C.

The converters of hybrid and electric vehicles operate at high voltage (400V) at the input end, which requires isolating the primary winding of the current sensor directly connected to the high voltage circuit from the secondary station connected to the control circuit. Premo current sensor ensures 3kV isolation and creepage distance>; 6.5mm.

The precise sensing of a single current (Premo sensor accuracy of 2%) enables the system to manage circuits, especially load regulation, set workloads and optimal operating points to maximize power or minimize power consumption or loss (sensor power consumption less than 1W). Most importantly, the low DCR current sensor (Plemer's typical DCR is 0.5 ohms) is an effective tool for ZVT and ZVS full bridge topologies, which can minimize stress in high-frequency switch MOFETs.

Main features:

- Nominal primary current of 35 A

- Rotation ratio 1:100

- Secondary inductance>; 4mH

- One time DC resistance=0.5 mOhm typical value

- Secondary DC resistance=0.8 ohms typical value

- One time capacitance less than 7pF

- First to Second Isolation>; 3VDC

- Working temperature: -40 º C to 155 º C

Among these features, the Plemer current sensor fully complies with the AECQ-200C standard and can be used in AOI (Automatic Welding Inspection) systems required by the automotive market.

Weikewei can develop customized current sensors for the electric vehicle industry to meet industry standards. For more information, please contact our technical team