Infineon Technologies TLE4971A050T5E0001XUMA1

Overview

TLE4971A050T5E0001XUMA1 from Infineon is a high-precision, coreless magnetic current sensor in PG-TISON-8-6 package, designed for ±50A DC/AC current measurement with semi-differential analog output, 210kHz bandwidth, and dual open-drain over-current detection outputs (OCD1/OCD2). It features 220µΩ insertion resistance, <1nH parasitic inductance, and galvanic functional isolation up to 1150V_peak VIORM - deployed in automotive on-board chargers and motor inverters.

For engineers reviewing the TLE4971A050T5E0001XUMA1 datasheet, TLE4971A050T5E0001XUMA1 pinout, TLE4971A050T5E0001XUMA1 application, or TLE4971A050T5E0001XUMA1 equivalent, key selection criteria include full-scale range (±50A), sensitivity (24 mV/A), quiescent voltage (1.65 V), OCD threshold factors (1.25 / 0.82), and EEPROM-programmable configuration without end-of-line calibration.

Technical Context

The device implements a differential Hall plate architecture with integrated current rail and on-chip signal conditioning, enabling stray-field suppression >50 dB against homogeneous 20 mT fields up to 150 kHz. Its self-diagnostic capability and LTI (Lead Tip Inspection) support functional safety compliance per ISO 26262.

Configuration is performed via Serial Inspection and Configuration Interface (SICI), storing OCD thresholds, blanking times, and output modes (semi-differential default) in embedded EEPROM. The analog output operates ratiometrically to VDD or VREF depending on mode, with programmable quiescent voltages (1.65 V standard) and selectable sensitivity ranges.

Key Specifications

Pinout & Package

Package: PG-TISON-8-6, 8×8 mm SMD, lead-tip inspectable, thermally enhanced with exposed thermal pad (connected to GND).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar coreless current sensing applications.

Compared with ACS724LLCTR-50AB-T and TMCS1100A4QDR, TLE4971A050T5E0001XUMA1 uniquely integrates dual programmable OCD outputs, LTI, EEPROM-based configuration, and ISO 26262 documentation - making it the only option qualified for ASIL-B automotive current feedback without external support circuitry.

Availability

TLE4971A050T5E0001XUMA1 is available at Aetrix Electronics and suitable for automotive on-board chargers, motor inverters, and industrial servo drives requiring stable component supply, long-term lifecycle support, and functional safety documentation.

Supply support for TLE4971A050T5E0001XUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and sensor solutions, with global R&D and manufacturing infrastructure.

The TLE4971 product line delivers high-precision, coreless current sensors for ASIL-B automotive subsystems - engineered to replace shunt-based isolation stacks while meeting stringent EMC, thermal, and safety requirements in high-voltage traction and charging systems.

FAQ

What is the default output mode and quiescent voltage of TLE4971A050T5E0001XUMA1?

The device ships pre-configured in semi-differential output mode with a fixed quiescent voltage of 1.65 V on both AOUT and VREF pins at zero current. This setting enables bidirectional ±50 A sensing with 24 mV/A sensitivity and does not require external reference components. The quiescent voltage remains stable across temperature (±230 mA offset error from −40°C to +125°C) and is stored in EEPROM, allowing field reconfiguration if needed.

How is over-current detection implemented, and can thresholds be modified?

OCD1 and OCD2 are open-drain outputs triggered independently by internal comparators using user-programmable thresholds: OCD1 at 1.25× full scale (62.5 A), OCD2 at 0.82× full scale (41 A). Both feature zero deglitch filter delay by default but support configurable blanking times via SICI interface. Thresholds and timing parameters are stored in EEPROM and can be updated in-system without hardware changes.

Does TLE4971A050T5E0001XUMA1 require external calibration or trimming?

No. The device is fully calibrated at Infineon's production line for sensitivity, offset, and temperature drift across −40°C to +125°C. No end-of-line calibration is required by the customer. All calibration coefficients and configuration data are stored in on-chip EEPROM, ensuring consistent performance across units and eliminating production test overhead for analog gain/offset adjustment.

What is the thermal performance and PCB layout guidance for this sensor?

The PG-TISON-8-6 package has a junction-to-soldering-point thermal resistance of 0.25 K/W on Infineon's reference PCB (140 µm copper). To maintain reliability at 50 A RMS, use ≥2 oz copper on inner layers, connect the exposed thermal pad directly to a large GND plane, and avoid routing high-current traces near VREF/AOUT. The 220 µΩ rail resistance generates <50 mW loss, minimizing self-heating impact on accuracy.