New current sensor for automotive (CS-100-AU)
Premo develops Industry Smallest 35 Amp current sensor for automotive / Max height 8.5mm with less than 2.7 cm2 PCB usage
The new CS-100-AU current sensor is designed with low losses and high temperature stability toroidal ferrite core which allows working frequencies higher than 200 kHz at operating temperatures from -40ºC up to 155ºC.
The converters for hybrid and electric vehicles works at high voltage (400V) in the input site, which makes a must to isolate primary winding of the current sensor, directly connected to the high voltage circuit, from the secondary site, connected to the control circuit. Premo current sensor guarantees 3kV isolation and a creepage distance > 6.5mm.
A precise (Premo sensor precision 2%) sensing of primary currents let the system manage line and specially load regulation being able to set the workload and optimum working point either to maximize power or to minimize power consumption or dissipation ( Sensor dissipation less than 1W). Above all, a low DCR current sensor (Premo's typical DCR is 0.5mOHM), is an efficient tool for ZVT and ZVS full bridge topologies to minimize stress in High frequency switching MOFET's.
- Nominal primary current 35 Arms
- Turns ratio 1:100
- Secondary Inductance > 4mH
- Primary DC resistance = 0.5 mOhm typ
- Secondary DC resistance = 0.8 Ohm typ
- Primary to Secondary capacitance < 7pF
- Primary to Secondary Isolation > 3kVdc
- Operating temperature: -40ºC to 155ºC
Among those characteristics PREMO current sensor is fully AECQ-200C complaint and ready to use in AOI (Automatic Soldering Inspection) system, as required in automotive market.
The fast Industry Revolution that is changing the Auto sector is making design time and time to market as fast as in Consumer and ready- to- use off the shelf solutions fully qualified helps Power Electronics Design Engineers increase their throughput by standardization.
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