HMSR SERIES

The best solution for harsh environments
Integrated Current Sensors

HMSR series, our first ICS range for small mechanical footprint with high robustness and performance

The HMSR family is the first range of Integrated Current Sensors by LEM. It was designed for our customers to get all the benefits from an ICS but with a new isolation concept that allows unique robustness.

HMSR allows 4.95kV guaranteed and characterized up to 5.66kVin laboratory. The family has a pre-mold design to isolate the primary bar and a special footprint to allow 8mm dCp/dCI on the landing pad. The integrated micro core inside the HMSR makes it very immune to external magnetic field and great accuracy. It is ideal for applications in solar DC side, chargers, etc.

HMSR DA, OUR NEW MEMBER, THE FIRST ICS WITH SIGMA DELTA BITSTREAM OUTPUT

HMSR SERIES
  • Replaces shunt and digital isolator for reduced cost and footprint
  • Produces Sigma Delta bitstream for clean easy to use signal
  • Offers efficient performance for servo drives, robotics and other high precision applications

Main Features

  • Sigma Digital bitstream output with 10 MHz clock in or out
  • High resolution with an effective number of bits (ENOB) 11 to 13 bits
  • Different output modes: Single ended CMOS, Differential RS422, LVDS
  • Fast internal OCD of 2 µs

Download press release

video

HMSR DA 3D

HMSR SERIES

MAIN BENEFITS:

  • SOIC 16 compatible footprint
  • Great accuracy: Typical accuracy is 0.5% over temperature and the measurement range -Small hysteresis of <<0.5%
  • Strong immunity
    • Better immunity to bus bar influence than standard ICS on the market
    • Less dependent of the field direction (same perturbation on X,Y,Z direction)
    • Same immunity in homogeneous magnetic field

MAIN FEATURES:

  • Current range 6-30 Arms continuous at 125°C(75 A peak)
  • Isolation: 4,950 Vrms
  • Global accuracy -25°C: 0.78 %
  • Global accuracy -Over T° C: 1.4 %

HMSR SERIES

A NEW CONCEPT FOR REINFORCED ISOLATION

Design elements:

  • Long internal distance between primary and secondary side
  • Pre-mold design to isolate the primary bar with the rest of the IC
  • Use of high isolation mold compounds
  • Special footprint to allow 8mm dCp/dCl on the landing pad

Results:

  • 4.95kV guaranteed and tested at 100% on series production
  • Characterized up to 5.66kV in the lab
HMSR SERIES