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Current Sensors: Precise Measurement for Peak System Performance

In modern electrical systems, accurate and reliable current measurement is critical. It is essential for the monitoring, control, and protection of vital components. alfatec offers excellent, high-quality current sensors, enabling precise and efficient solutions for your most demanding applications.

Current Sensors: The Right Solution for Every Application

Our product range includes current sensors to meet the diverse requirements of modern power electronics. The choice of the right current sensor depends on the specific application, the current range to be measured, and the environmental conditions.

  • Hall-Effect Current Sensors (DC and AC):These sensors measure the magnetic field that an electric current generates and convert it into a proportional voltage. They provide galvanic isolation between the measuring circuit and the circuit being measured, which increases system safety. Hall-effect sensors are versatile because they can measure both direct (DC) and alternating (AC) currents and have high linearity.

We offer innovative Hall-effect current sensors from the leading manufacturer s4Sensors, which are known for their high quality and proprietary technology.

 

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Advantages and Special Features of the S4-CSA02 Current Sensor
Unlimited Current Measurement Range: Thanks to the unique backside vertical Hall-effect sensor technology, there are no limitations on the maximum measurable magnetic field and no hysteresis errors.
High Immunity to Stray Fields: The lateral measurement direction allows for high immunity to external stray fields, which leads to reliable current measurement.
No Significant Busbar Modification Required: Compared to solutions without stray field suppression, no substantial change to the busbar is necessary.
Robust and Reliable Performance: The AEC-Q100 Grade 0 qualification and the compensation of temperature drifts ensure high stability and accuracy over a wide temperature range and over the entire lifetime.
Flexibility and Programmability: The ability to adjust sensitivity, bandwidth, and operating modes offers developers maximum flexibility for specific application requirements.
Application Areas for the S4-CSA02 Hall-Effect Current Sensor
BLDC Motor Controllers: For precise control of brushless DC motors in industrial, robotics, and automotive applications. Precise current measurement is crucial here for efficiency and torque control.
BMS Modules (Battery Management Systems): Indispensable in electric vehicles (EV) and hybrid electric vehicles (HEV) for the precise monitoring of the battery state of charge (SOC) and the battery state of health (SOH).
EV and HEV Inverters: For the efficient control of power electronics in electric and hybrid vehicles.
AC/DC and DC/DC Converters: For current measurement in power supplies for the conversion and stabilization of voltages.
Smart Fuses: For the fast and precise detection of overcurrents and short circuits to protect systems.
Magnetic Encoders: The sensor can also be used in magnetic encoders, for example, for position feedback in BLDC motor controllers or in human-machine interfaces (HMI).
Overcurrent Detection with Galvanic Isolation: Due to its Hall-effect technology, the S4-CSA02 offers inherent galvanic isolation, which is advantageous for overcurrent protection in safety-critical applications.

S4-CSA02 Hall Sensor: Precise Current Measurement Redefined

The S4-CSA02 from s4Sensors is a state-of-the-art Hall-effect current sensor based on a unique vertical Hall-effect sensor technology. It's available in a compact SOIC-8 package and can be mounted directly on a primary busbar or a conductor on the printed circuit board (PCB).

Technical Features and Specifications of the S4-CSA02

This IC integrates a fast analog signal path with factory-calibrated gain and offset temperature drift compensation. Various parameters such as sensitivity, zero-point output voltage, temperature drift, and signal bandwidth, as well as operating modes, can be programmed in the application.

  • Sensor Technology: Proprietary vertical backside Hall-effect sensor technology for detecting lateral magnetic fields.
  • Operating Modes: Additive and differential operating modes for improved stray field suppression. The IC has two Hall-effect sensor areas that are approximately 1.6 mm apart. In additive mode, the sensor signals are added; in differential mode, they are subtracted, which improves stray field suppression.
  • Programmability: User-programmable bandwidth from 16 kHz to 250 kHz and a step response time of only 3 µs. Multi-point programmable sensitivity and offset temperature compensation. Very large sensitivity programming range.
  • Output Modes: Ratiometric or fixed output voltage range.
  • Monitoring Functions: Undervoltage and overvoltage detection for the supply.
  • Supply Voltage: 4.5 V - 5.5 V
  • Operating Temperature: A wide range from −40°C to +150°C for demanding environments.
  • Qualification: AEC-Q100 Grade 0 automotive qualified, which guarantees the highest reliability in vehicle applications.

Weitere Leistungsparameter:

  • Versorgungsstrom: ≤15mA
  • Magnetische Empfindlichkeit: 5-844 mV/mT
  • Einschaltzeit: ≤1ms
  • Linearitätsfehler: ±0.5%
  • Empfindlichkeits-Temperaturdrift: ±1.0%
  • Offset-Fehler über den gesamten Temperaturbereich: ±5mV
  • Rauschen (RMS): ≤10mV
  • Störfeldunterdrückung (Stray Field Immunity):
    • X-Richtung: -65 dB
    • Y-Richtung: -50 dB
    • Z-Richtung: -70 dB 

Our Partner in the Field of Current Sensors

s4sensors

s4sensors specializes in advanced Hall-effect sensor technologies. Their Backside-Hall technology is a significant advantage, as it allows the sensitive Hall elements to be placed on the side of the chip facing away from the magnetic field. This often leads to improved signal quality and robustness against external influences. S4sensors stands for innovation and quality in the field of magnetic sensors.

To the Manufacturer

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Experience the quality and performance of our current sensors for yourself. Request a no-obligation quote today.

 

alfatec – Your Partner for High-Quality Electronic Components

As a knowledgeable partner for electronic components, alfatec assists you in selecting the right current sensors for your applications. We offer comprehensive advice and are happy to help with any questions you may have about power modules.

Do you have questions about our sensors or would you like a personal consultation? Feel free to contact us.