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Features & Benefits

? High accurate, scalable, DC & AC current sensing.

? Very low sensitivity error over temperature and

lifetime.

? Excellent stability of offset over temperature and

lifetime.

? High bandwidth provides fast response time and low

phase delay.

? Differential sensor principle ensures superior

magnetic stray field suppression.

? Two independent fast Over-Current Detection (OCD)

pins with configurable thresholds enable fast

protection mechanisms for power circuitry (typical

0.7μs).

? Full scale up to 31 mT for high current applications.

? Small form factor enables low insertion resistance

and less power loss.

? Configurable analog output operational modes

(fully-differential, semi-differential or

single-ended, uni- and bidirectional with or without

ratiometricity)

? Supply voltage 3.1 to 3.5V.

? Developed in accordance with ISO 26262 for safety

requirements rated up to ASIL B.

? Different package solutions for optimal system

integration in different wiring schemes.

Description

TLE4972 is a high precision miniature coreless

magnetic current sensor for AC and DC

measurements with analog interface and two fast

over-current detection outputs.

Infineon's well-established and robust monolithic

Hall technology enables accurate and highly linear

measurement of the magnetic field caused by

currents. With a full scale up to ±31mT it is possible

to measure currents up to 2,000 ampere. All

negative effects (e.g. saturation, hysteresis)

commonly known from open loop sensors using flux

concentration techniques are avoided. The sensor is

developed in accordance to functional safety

standard ISO 26262 and is equipped with internal

self-diagnostics.

Typical applications are electrical drives, on board

chargers, battery main switches, power supplies,

over-load and over-current detection in high voltage

applications.

The digitally assisted analog concept of TLE4972

offers superior stability over temperature and

lifetime thanks to the Infineon proprietary digital

stress and temperature compensation. The

differential measurement principle allows great

stray field suppression for operation in harsh

environments.

The sensor is available in two packages to support a

wide range of different system integration

scenarios.

Two separate over current detection pins (OCD)

provide a fast output signal in case the

measurement current exceeds the configured

thresholds in typical 0.7μs.

The sensor is shipped as a pre-calibrated product,

which provides an accurate performance over

temperature and stress. The TLE4972 has in-situ

calibration capability to achieve maximum accuracy

at the system level.

The high configurability enables customization for a

wide variety of applications.