Infineon Technologies TLE4971A050N5UE0001XUMA1

Overview

TLE4971A050N5UE0001XUMA1 from Infineon is a high-precision, coreless magnetic current sensor in PG-TISON-8-5 package, designed for ±50A DC/AC automotive current sensing with analog output and dual fast over-current detection (OCD) outputs. It features 220µΩ insertion resistance, <1nH parasitic inductance, 210kHz bandwidth, and factory-calibrated semi-differential output with 1.65V quiescent voltage. Used in onboard chargers and motor inverters where galvanic isolation up to 1150V_peak and stray-field immunity are critical.

For engineers reviewing the TLE4971A050N5UE0001XUMA1 datasheet, TLE4971A050N5UE0001XUMA1 pinout, TLE4971A050N5UE0001XUMA1 application, or TLE4971A050N5UE0001XUMA1 equivalent, key selection criteria include full-scale range (±50A), OCD threshold programmability (1.25×/0.82× FS), EEPROM-configurable output mode (semi-differential default), and functional isolation compliance per UL certification (U-suffix).

Technical Context

The TLE4971A050N5UE0001XUMA1 implements differential Hall plate sensing with on-chip signal conditioning, enabling accurate current measurement independent of external magnetic interference. Its integrated current rail supports bidirectional flow from IP+ (pin 8) to IP− (pin 7), with internal self-diagnostic capability and EEPROM-stored configuration parameters including OCD blanking times and output polarity.

It operates across −40°C to +125°C ambient, draws 18–25mA supply current at 3.3V, and delivers analog output with 24mV/A sensitivity (±50A range), 120–210kHz −3dB bandwidth, and 260–660µA/√Hz noise density. The dual open-drain OCD outputs support wired-AND fault signaling without external logic.

Key Specifications

Pinout & Package

Package: PG-TISON-8-5 (8 mm × 8 mm × 1.9 mm, exposed thermal pad, RoHS-compliant SMD)

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-50AB-T and TMCS1100A1QDR, the TLE4971A050N5UE0001XUMA1 provides superior integration (on-rail, dual OCD, EEPROM), automotive-grade isolation (UL-certified), and field-programmable protection-making it optimal for safety-critical, space-constrained inverter and OBC designs requiring zero calibration overhead.

Availability

TLE4971A050N5UE0001XUMA1 is available at Aetrix Electronics and suitable for onboard chargers, motor inverters, and overcurrent protection systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.

Supply support for TLE4971A050N5UE0001XUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control solutions, with global R&D and manufacturing infrastructure.

The TLE4971 product line delivers coreless current sensing ICs optimized for high-efficiency, safety-critical automotive electrification systems-including traction inverters, OBCs, and battery disconnect units-where accuracy, isolation, and programmable fault response are mandatory.

FAQ

What output modes does the TLE4971A050N5UE0001XUMA1 support, and how is the default configured?

The device supports single-ended, fully-differential, and semi-differential output modes, all programmable via its embedded EEPROM. By default, the TLE4971A050N5UE0001XUMA1 ships in semi-differential mode with VREF outputting 1.65V and AOUT delivering a 24mV/A proportional signal referenced to that voltage. This mode provides inherent common-mode noise rejection while maintaining single-ended interface simplicity.

How is over-current detection implemented, and can thresholds be adjusted after soldering?

OCD1 and OCD2 are independent open-drain outputs triggered by internal comparators monitoring the raw Hall signal. Thresholds are set as factors (1.25× and 0.82× full-scale) and stored in EEPROM. Using the Serial Inspection and Configuration Interface (SICI), thresholds, blanking times, and filter settings can be reprogrammed in-circuit post-soldering without disassembly or external components.

Does the TLE4971A050N5UE0001XUMA1 require external calibration or trimming during system integration?

No. The device is shipped fully calibrated from Infineon's production line, with offset, sensitivity, and linearity corrections permanently stored in on-chip memory. No end-of-line current injection, voltage adjustment, or software compensation is needed-reducing test time, eliminating calibration fixtures, and ensuring consistent performance across production batches.

What is the thermal performance limitation when operating at maximum rated current?

At ±50A RMS continuous current, junction temperature rise is limited by the thermal resistance R_THJS = 0.25 K/W (on Infineon reference PCB). With 220µΩ insertion resistance, power dissipation is 550mW, resulting in ~138°C junction rise above ambient. To maintain T_j ≤ 130°C, ambient must stay below −8°C - thus derating or enhanced heatsinking is required for sustained 50A operation in high-temperature environments.