Current Sensors Innovations

Highest DC Working Voltage in SOIC16 Package!

Our packages have the highest working voltages in SOIC-16 footprint.

Features:

  • Working Voltages up to 1600 VDC
  • Small Footprint SOIC-8 and SOIC-16 Packages
  • Basic and Reinforced Isolation
  • Benefits:

  • Higher Power Density
  • Increased efficiency via higher system voltages 
  • Applications:

    Solar Inverters, Hybrid Electric Vehicles, Telecom Power Supplies, HVAC, VFDs and other Drives, DC-DC Conversion.

    Devices:

    ACS724, ACS725, ACS720, ACS732, ACS733

     

    Over-Current Detection

     

    Over-Current Detection

    Allegro’s current sensors include fast over-current detection in addition to a precision analog output. 

    Features:

  • Open Drain Fault pin with µs response time 
  • High level of integration in a single IC
  • Compact, SOIC-8 and SOIC16 footprints 
  • Benefits:

  • Cost Effective and easy to use 
  • Reduced design Complexity and BOM
  • Enhance reliability and protection for FETs and IGBTs by avoiding current out of range events
  • Applications:

    Overcurrent detection, server monitoring and protection, Class D Amplifiers, IOT applications, power supply protection, telecom equipment, motor control, VFDs and other Drives.

    Devices: 

    ACS709, ACS710, ACS711, ACS71240, ACS720, ACS732, ACS733, A1365 

     

       

    A Discrete Alternative to Bulky Current Transformers

    High speed integrated sensors are the smart alternative to bulky current transformers (CTs). Low profile SOIC packages withstand vibration and fit in small spaces where CTs cannot! 

    Features:

  • High Speed, low latency analog output
  • Differential sensing topology
  • Small QFN, SOIC-8 and SOIC-16 Footprints
  • Benefits:

  • Fast Response time and low latency for peak current tracking, and cycle by cycle current control 
  • Reliability in the presence of external magnetic fields
  • Increased integration in a low profile, compact footprint
  • Applications:

    Peak current tracking, On-board Battery Chargers, Power Factor Correction, DC-DC Converters, 12V-48V Servers, telecom power supplies. 

    Devices:

    ACS730, ACS732, ACS733 and ACS70331

     

    Highest Ambient Temperature Ratings

    Allegro has the broadest family of integrated current sensors with ambient temperature ratings up to 150°C! With almost 20 “L-Temp” current sensors in our growing portfolio you’re sure to find robust current sensors for all automotive and industrial needs.

    Features:

  • Integrated current sensors with the Highest Ambient Temperature Ratings (TA)
  • Benefits:

  • Reduce system cooling requirements
  • Robust sensing solution in high heat applications
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    Non-Contact sensing provides immunity to high-voltage transients (dv/dt) and fast current spikes (di/dt)

    Patented on-chip shield circuitry reduces output errors due to high voltage switching (high dv/dt). Additionally, the hall effect sensing method is immune to inductance spikes from high di/dt events, unlike most shunt + op-amp solutions.

    Features:

  • Patented On-Chip Shield
  • Non-contact sensing methodology
  • Benefits:

  • Inherent immunity to current and voltage transients
  • Reduced “blank time” after switching cycle 
  • Applications

    Power Factor Correction, DC-DC Converters, Inverters, Motors Control, VFDs and other Drives. 

    Devices:

    ACS709, ACS710, ACS711, ACS71240, ACS720, ACS724, ACS725, ACS730, ACS732, ACS733 

     

     

    The Most Accurate Open Loop Field Sensor

    The ACS70310’s Innovative signal path and final test solutions result in the most accurate field sensor on the market for core based current sensing. 

    Features:

  • Lowest offset and sensitivity drift over temperature
  • Benefits:

  • Increase system accuracy over temperature
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    Fast Response time … Zero Undershoot! 

    Features:

    • Patented signal path architecture to eliminate undershoot

    Benefits:

    • Protect expensive IGBTs, MOSFETS and SiC-FETS by detecting in-rush currents and short circuits faster than the competition
    • Improve control with reduced response time and phase delay 

    Applications:

    Inverters, Traction Inverters, Integrated Belt Start Generators (IBSG), E-Bikes, Bus Bar measurement, fork lift and other industrial transportation. 

    Devices:

    ACS70310, A1363, A1365, A1366, A1367