HallinPower®: Flexible current sensors from milliamperes to several mega-amperes

Magnetic field sensors for non-contact current measurement

Schematische Darstellung eines Chip-Querschnitts und des Feldlinienverlaufs für einen 2-Kanal-Stromsensor
© Fraunhofer IIS
Chip cross-section and field line profile for a 2-channel current sensor

Every electric current generates a magnetic field that can be measured with magnetic field sensors and converted into a current value. In this way, contactless, galvanically isolated current sensors can be developed, which are widely used due to this enormous advantage. There are different approaches to realize a reliable measurement of the current, which are based on different measuring principles depending on the requirements of the application. HallinPower® technology combines several approaches and enables flexible adaptation to a wide range of measurement requirements, while at the same time ensuring a high level of robustness against interference. By dispensing with magnetizable materials and using integrated sensors, the measuring system can be set up easily and cost-effectively. Thanks to advanced algorithms, even demanding scenarios, such as the detection of several currents simultaneously, can be technically implemented.

At a glance: Technical keyfacts and benefits

Keyfacts Benefits
  • Galvanic insulation
  • Robust measuring systems without shielding
  • Insensitive to overload
  • High dynamics, linearity and bandwidth
  • No magnetizable materials
  • DC and AC measurements
  • Manufactured using standard CMOS technology
  • Simultaneous measurement of several currents
  • Installation during operation
  • Differential measurement
  • Cost-effective production
  • Small size due to system integration
  • Low weight due to elimination of cores
© Fraunhofer IIS
Comparative evaluation of established and modern current measurement methods based on different properties

Our offer: Tailor-made electricity measurement solutions

Our expertise in current measurement encompasses both new and tried-and-tested techniques: one innovative solution is model-based current measurement, which uses mathematical models and advanced algorithms for precise current measurement. This approach is continuously being developed and adapted to current requirements. In addition, we rely on established and robust methods such as the differential field principle, which uses the difference in magnetic fields for precise measurements, and the ring integral principle, which enables us to accurately measure currents by integrating the magnetic field along a path. We offer you support throughout the entire development process. This means:

  • Feasibility analysis
  • Development and optimization of the arrangement of magnetic sources and sensors
  • Elaboration of the signal processing
  • Realization of the electronics, both discrete and integrated
  • Development of measurement sequences, e.g. for production tests
  • Support with component and module qualification
  • Support during the start of series production and support in the analysis of returns during series production

Applications: Focus on energy efficiency

In times of the energy transition and the more sustainable use of resources, the precise measurement of currents in automobiles, industrial plants and smart homes has become a major focus. HallinPower® technology offers a comprehensive range of flexible solutions for a wide variety of requirements. Both proven methods for current measurement and modern approaches can be implemented. They enable quick installation and commissioning without calibration as well as the simultaneous measurement of several currents. HallinPower® technology offers major advantages in production environments in particular, as it can be easily integrated during operation, thus enabling companies to avoid downtimes. Accordingly, HallinPower® is suitable for the following applications, for example:

  • Current sensors for power distribution systems
  • Monitoring of energy-efficient systems
  • Energy monitoring of photovoltaic systems with inverters
  • Battery condition monitoring, e.g. of the internal resistance
  • On-board power supply monitoring
  • Start/stop support without shunt
  • Charging infrastructure in electromobility
  • High current measurement in electrolysis processes

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March 26-27, 2025 | Augsburg

Coiltech Deutschland 2025

Visit us at Coiltech in Augsburg on March 26 and 27, 2025. We will be presenting solutions for Hall sensor ICs, evaluation algorithms and sensor systems for magnetic field measurement and current sensors.

You will find us in Hall 2, Stand C37 – we look forward to your visit!

 

May 6-8, 2025 | Nuremberg

SENSOR+TEST 2025

Exchange ideas with us at the SENSOR+TEST 2025 from May 6 to 8, 2025 in Nuremberg. Our experts in the fields of magnetic and optical sensor systems and ASIC development await you.

Visit us in Hall 1, Stand 317 – we look forward to seeing you!

 

Services offered

Magnetic sensor systems

Further research topics