Our supplier LEM offers a new current sensor; The SMU, or Single Monitoring Unit, designed for DC measurement in high-power, low-voltage automotive applications. It provides galvanic isolation between the primary (high power) and secondary (electronic) circuits.
The SMU family offers a variety of current measurement ranges within the same housing, from ±400 A to ±1500 A
These automotive current sensors feature high insulation levels and operate within a temperature range of -40°C to +125°C.
Designed for primary fastening installation, SMU sensors use Hall effect (open loop) technology, ensuring dependable and precise current measurements for electric vehicle applications.
Main characteristics
• Open Loop sensor using the Hall effect sensor
• High insulation level
• Unipolar +5 V DC power supply
• Primary current measuring range up to ±1500 A
• Maximum RMS primary admissible current: defined by the busbar, the magnetic core or ASIC T < +125 °C
• Operating temperature range: −40 °C < T < +125 °C
• Output voltage: fully ratio-metric (in sensitivity and offset)
Benefits
• Excellent accuracy
• Very good linearity
• Very low thermal offset drift
• Very low thermal sensitivity drift
• High frequency bandwidth
• No insertion losses
Typical applications
These sensors are ideal for use in applications like battery management and in EV and Hybrid vehicles.