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)
• 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
• 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.
These sensors are ideal for use in applications like battery management and in EV and Hybrid vehicles.