TLI4970-D025T4

Product Description

Data Sheet

8

Rev. 1.0, 2015-07-02

1.3

General Information

The TLI4970-D025T4 is a high-precision digital current sensor. The full scale measurement range is ±25 A. The

sensor is based on Infineon's well-established and robust Hall technology.

The measurement principle allows galvanic isolation (functional isolation) between the primary conductor and the

secondary interface side.

The coreless concept without a flux concentrator allows significant miniaturization. It shows no hysteresis effects

and has enhanced linearity and over current capability compared to existing solutions. The differential

measurement principle achieves best-in-class suppression of magnetic stray fields. The sensor is fully calibrated;

no need for any additional calibration after PCB assembly is necessary. Thus, the overall implementation effort

and costs are significantly reduced. It is a plug-and-play solution, easy to use in industrial and consumer

applications.

The accuracy of the TLI4970-D025T4 is comparable to closed-loop current measurement systems and even better

than open-loop systems with magnetic core. But in comparison to the open- and closed-loop system the TLI4970-

D025T4 enables a significantly smaller footprint and less power consumption.

Infineon's patented stress compensation circuit provides outstanding long-term stability of the output signal.

Proprietary dynamic offset cancellation techniques guarantee particularly low zero point error. Hereby, the

TLI4970-D025T4 offers superior performance.

The TLI4970-D025T4 is based on a digital concept. Thus, signal processing, compensation and calibration is

already integrated. No further external measurements for compensation are needed.

The sensor is provided in a small 7 mm x 7 mm SMD package.

1.4

Target Applications

The TLI4970-D025T4 is suitable for AC as well as DC current measurement applications:

•

Current monitoring

•

Chargers

•

Photovoltaic & general purpose inverters

•

Power supplies (SMPS)

•

Electrical drive

•etc.

With its implemented magnetic interference suppression, it is extremely robust when exposed to external magnetic

fields. It is also suitable for fast over current detection with a configurable threshold level. This allows the control

unit to switch off and protect the affected system from damage, independently of the main measurement path.