• HOB

    A unique combination of short response time and high bandwidth for current sensing in harsh environments

    High bandwidth and short response time

    Unmatched performance for SiC MOSFET applications

    With a market-leading response time of < 200 ns – compared to average response times of around 3 microseconds – the HOB sensors are capable of measuring DC, AC or pulsed current up to 250A.?

    At the same time, the HOB product family is ideally suited to wide bandgap (WBG) power electronics use cases and applications that require enhanced immunity to the dv/dt (acceleration) issues that SiC power modules are prone to.

    Moreover, the HOB parts offer a high bandwidth (> 1MHz), reinforced insulation with dCp/dCl > 11 mm, and an integrated primary conductor with very low resistance of 60 nΩ.

    HOB current sensors utilize open-loop Hall effect technology, making them well-suited for a range of industrial applications. Among those applications stand handheld plasma cutters, welders, DC-DC converters, etc.

    HOB – Features and benefits

    HOB current sensors

    Features

    • Open loop Hall effect multi-range current transducer
    • Voltage output
    • Single power supply +5 V
    • Galvanic separation between primary and secondary circuit
    • Low power consumption
    • Compact design for THT PCB mounting
    • Factory calibrated
    • 4 models to cover 4 nominal currents of 50, 75, 100 and 130 ARMS

    Benefits

    • Low offset temperature drift
    • Creepage / clearance > 11 mm
    • Unique short response time of < 200 ns
    • High cut-off frequency up to 1 MHz
    • Ideal for harsh environments with operating temperature range from -40 °C to +105 °C
    • Lower noise and better dv/dt behavior vs other classical Hall Effect O/L sensors from the market
    • Enhanced immunity

    Typical applications

    • AC variable speed drives and servo motor drives
    • Static converters for DC motor drives
    • Battery supplied applications
    • Uninterruptible Power Supplies (UPS)
    • Switched Mode Power Supplies (SMPS)
    • Combiner box
    • Solar inverter on DC side of the inverter (MPPT)
    • Plasma cutter, welding
    • Charging station

    HOB transducers - Standards compliance

    HOB Series
    IEC 61010-1: 2017
    IEC 61010-2-30: 2017
    IEC 61800-3: 2017
    IEC 61800-5-1: 2007
    IEC 62109-1: 2010
    UL 508: 2018

    LEM HOB – Download & Technical Characteristic

    Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
    HOB 50-P

    Datasheet

    50 A 5 to 5 -40 to 105 °C
    HOB 50-P/SP1

    Datasheet

    50 A 5 to 5 -40 to 105 °C
    HOB 50-P/SP33 Datasheet 50 A 3.3 to 3.3 -40 to 105 °C
    HOB 75-P Datasheet 75 A 5 to 5 -40 to 105 °C
    HOB 75-P/SP1 Datasheet 75 A 5 to 5 -40 to 105 °C
    HOB 75-P/SP33 Datasheet 75 A 3.3 to 3.3 -40 to 105 °C
    HOB 75-P/SP34 Datasheet 75 A 3.3 to 3.3 -40 to 105 °C
    HOB 100-P Datasheet
    3D
    100 A 5 to 5 -40 to 105 °C
    HOB 100-P/SP1 Datasheet 100 A 5 to 5 -40 to 105 °C
    HOB 100-P/SP33 Datasheet 100 A 3.3 to 3.3 -40 to 105 °C
    HOB 100-P/SP34 Datasheet 100 A 3.3 to 3.3 -40 to 105 °C
    HOB 130-P Datasheet 130 A 5 to 5 -40 to 105 °C
    HOB 130-P/SP1 Datasheet 130 A 5 to 5 -40 to 105 °C
    HOB 130-P/SP33 Datasheet 130 A 3.3 to 3.3 -40 to 105 °C
    HOB 130-P/SP34 Datasheet 130 A 3.3 to 3.3 -40 to 105 °C

    HOB Sensors – ASK FOR SAMPLES / QUOTATIONS

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