MCS1805: Accurate Current Sensor for Motor-Control and Automotive-Applications
High Flexibility: Absolute or Ratiometric Measurement and Custom Defined OCD-Flag
With the MCS1805 MPS presents a linear Hall-effect current sensor IC for AC or DC current sensing. The Hall array is differential to cancel out any stray magnetic field.
Magnetic Field which is Sensed at Two Different Points
A low resistance primary conductor allows large current to flow within close proximity of an integrated circuit containing high accuracy Hall sensors. This current generates a magnetic field which is sensed at two different points by the integrated Hall transducers. The magnetic field difference between these two points is then converted into a voltage proportional to the applied current. Spinning current technique is used for a low stable offset. The galvanic isolation between the pins of the primary conductive path and the sensor leads allow the MCS1805 to replace opto-isolators or other isolation devices.
The MCS1805 integrates fast over current detection (OCD), which is easy for monitoring system over current events. The MCS1805 requires a minimal number of external components. The devices’ small SOIC-8 footprint saves board area and makes it well suited for space-constrained applications.
Features & Benefits:
- 3.3V or 5V single supply options
- Immune to external gradient magnetic fields by differential sensing
- Extreme low noise density
- 3kVRMS minimum isolation voltage
- 580VRMS maximum working voltage
- ±2.5% total accuracy
- 5A to 50A bi-directional or uni-directional range
- 120kHz bandwidth
- Custom over current detection from 50% to 240% of IPMAX
- Fast OCD, 1µs response time
- Output proportional to AC or DC currents
- Ratiometric or absolute measurement relative to supply voltage
- Factory-trimmed for accuracy
- Available in an SOIC-8 package
- UL/TUV certification pending
Your Contact Person
For more information, please contact Thomas Berner.
