Infineon Technologies TLI4971 XENSIV™ Magnetic Current Sensors
Infineon Technologies TLI4971 XENSIV™ Magnetic Current Sensors offer high-precision bi-directional AC and DC current measurements with an analog interface and two fast overcurrent detection outputs. The sensors support power circuitry protection, and galvanic isolation is provided due to the magnetic sensing principle. Infineon's monolithic Hall technology enables accurate and highly linear measurement of currents with a full scale up to 120A. Negative effects, like saturation and hysteresis, are commonly known from core-based sensor techniques and are not present in the Infineon open-loop, core-less sensors principle. The smart current rail design (double U-shape), combined with differential signal sensing, makes the current sensor robust against stray fields.
The stray-field robust differential sensors come in two packages. The TISON-8-5 (leadless, high-ampacity) package delivers up to 70ARMS, ±120A FSR, 1150Vpk isolation, 4mm clearance/creepage, and <2% typical accuracy error at +25°C. The TDSO-16-50 (leaded, high-isolation)offers up to 45ARMS, ±65A FSR, 8mm clearance/creepage, up to 1700V IORM basic isolation, 1500V IORM reinforced isolation, and <0.5% typical error over the entire temperature range.
Features
- 70ARMS at 690VRMS within ±120A FSR
- <2% typical error rate at +25°C
- 225µΩ typical current rail resistance specified
- 120kHz bandwidth analog output signal
- 2x IFSR fast overcurrent detection (1µs typical response time)
- Ultra-low power loss due to the low resistance of the current rail
- Reliable current measurement over lifetime (no recalibration)
- Functional isolation for high-voltage applications
- Easy and compact package allows high power density design
Applications
- Industrial inverter and drives up to 690VRMS
- Battery management
- Photovoltaic inverters
- Power supplies
- Overload or overcurrent detection in high-voltage power circuits
- White goods
- Power tools
- Robot applications
Videos
Block Diagram
Development Tools
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