TLE4971-A120N5-E0001 120 A, <2 %, 3.1-3.5V

Overview

XENSIV™ - TLE4971-A120N5-E0001 high precision coreless current sensor with analog interface and dual fast over-current detection outputs

The Infineon XENSIV TLE4971-A120N5-E0001 is a new automotive qualified pre-programmed 120A sensor. It serves the unique ±120A measurement rage, the highest for current sensors with integrated current rail in a small SMD body. Due to the coreless magnetic current sensing principle, saturation or hysteresis effects commonly known from sensors using flux concentration techniques are avoided. The analog interface and two dedicated fast over-current detection pins with a reaction time of less than 1µs ensures a safe operation of systems.

Infineon's well-established and robust Hall technology enables accurate and highly linear measurement of AC and DC currents with a full measurement range up to ±120A full scale range. All negative effects (saturation, hysteresis) commonly known from sensors using flux concentration techniques are avoided.

The digitally assisted analog concept of TLE4971 offers superior stability over temperature and lifetime thanks to the proprietary digital stress and temperature compensation. The differential measurement principle allows great stray field suppression for operation in harsh environments up to 125°C.

We offer two derivatives:

Summary of Features

  • Integrated current rail with typical 220µΩ insertion resistance enables ultra-low power loss
  • SMD package with very small form factor, 8x8mm for easy integration and board area saving
  • Single supply voltage, 3.1V to 3.5V
  • Highly accurate, scalable, DC & AC current sensing
  • Typical bandwidth of 210kHz
  • Excellent stability of offset over temperature and lifetime
  • High robustness to voltage slew rates up to 10V/ns
  • Galvanic functional isolation up to 1150V peak VIORM. Partial discharge capability of at least 1200V. 4mm clearance and creepage.
  • Differential sensor principle ensures superior magnetic stray field suppression
  • Two independent fast Over-Current Detection (OCD) pins with configurable thresholds enable protection mechanisms for power circuitry (typical 0,7µs)
  • TS: -40…+125°C
  • AEC-Q100 grade 1 qualified
  • Pre-calibrated sensor

Potential Applications

  • On board charger (OBC)
  • Electrical drives (up to 690V)
  • Auxiliary drives
  • Photovoltaic inverter
  • EV-chargers
  • General purpose inverters
  • Power supplies
Training
training image XENSIV

Infineon XENSIV™ TLE4971 magnetic current sensors for industrial/automotive applications

  • Know the different focus applications and recognize the possible configurations of the TLE4971 current sensor family.
  • Understand how applications benefit from our special package of integrated current rail sensors and the benefits of this product family regarding thermal performance, signal speed, and overcurrent detection in less than one microsecond.
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