Infineon Technologies TLI4971A050T5E0001XUMA1

Overview

TLI4971A050T5E0001XUMA1 from Infineon is a high-precision coreless magnetic current sensor in PG-TISON-8 package, designed for ±50A AC/DC measurement with analog output and dual fast over-current detection (OCD) outputs. It features 240kHz bandwidth, <1nH parasitic inductance, 220µΩ integrated current rail resistance, galvanic isolation up to 1150V, and factory-calibrated semi-differential output mode with 1.65V quiescent voltage.

For engineers reviewing the TLI4971A050T5E0001XUMA1 datasheet, TLI4971A050T5E0001XUMA1 pinout, TLI4971A050T5E0001XUMA1 application, or TLI4971A050T5E0001XUMA1 equivalent, this device supports precise current monitoring in inverters, motor drives, and PV systems where stray-field immunity, fast fault response, and stable full-scale accuracy across temperature are critical selection criteria.

Technical Context

The TLI4971A050T5E0001XUMA1 uses differential Hall sensing across an integrated low-inductance current rail to eliminate saturation and hysteresis effects common in flux-concentrating sensors. Its monolithic architecture embeds temperature/stress compensation, EEPROM-programmable OCD thresholds (1.25× and 0.82× FS), and deglitch filtering - all configurable via Serial Inspection and Configuration Interface (SICI).

It operates in semi-differential mode by default, delivering a single-ended analog output on AOUT referenced to an internal 1.65V VREF (output), with non-ratiometric sensitivity of 24mV/A for ±50A full scale. The two open-drain OCD outputs support wired-AND fault signaling and respond within nanoseconds to over-current events independent of the main signal path.

Key Specifications

Pinout & Package

TLI4971A050T5E0001XUMA1 is housed in PG-TISON-8 (8 mm × 8 mm, 1.0 mm height), a surface-mount package with exposed thermal pad for enhanced heat dissipation and high-voltage creepage/clearance compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-50AB-T and TMCS1100A1QDR, TLI4971A050T5E0001XUMA1 uniquely combines UL-certified 1150V isolation, dual independently programmable OCD outputs, 240kHz bandwidth, and factory calibration - making it the only option qualified for safety-critical, high-dynamic-range current sensing in certified industrial inverters and drives.

Availability

TLI4971A050T5E0001XUMA1 is available at Aetrix Electronics and suitable for electrical drives, PV inverters, and industrial chargers requiring stable component supply, long-term lifecycle support, and compliance with UL1577 and AEC-Q100 Grade 2 standards.

Supply support for TLI4971A050T5E0001XUMA1 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, industrial, and security solutions, with leadership in silicon carbide, GaN, and magnetic sensing technologies.

The TLI4971 product line delivers coreless current sensors optimized for high-efficiency, high-reliability industrial power conversion - targeting applications where isolation integrity, thermal stability, and real-time fault response are non-negotiable design requirements.

FAQ

What output modes does TLI4971A050T5E0001XUMA1 support, and how are they configured?

The device supports semi-differential (default), fully-differential, and single-ended analog output modes. Mode selection is performed via the Serial Inspection and Configuration Interface (SICI) by writing to EEPROM registers. Semi-differential uses internal 1.65V VREF and AOUT only; fully-differential outputs complementary signals on AOUT and VREF; single-ended requires external VREF applied to pin 3. No recalibration is needed after reconfiguration.

How is over-current detection implemented, and what are the threshold options?

Two independent open-drain OCD outputs (pins 5 and 6) trigger when measured current exceeds user-programmable thresholds. By default, OCD1 activates at 1.25× full scale (±62.5A) and OCD2 at 0.82× FS (±41A). Thresholds, deglitch filter times (0–10 µs), and blanking windows are stored in EEPROM and adjusted via SICI - enabling adaptive fault response without hardware changes.

Does TLI4971A050T5E0001XUMA1 require external calibration or trimming during system integration?

No. The device ships fully calibrated from Infineon with guaranteed total error <±0.7% FS over temperature (−40°C to +105°C) for the ±50A range. Sensitivity, offset, and temperature compensation coefficients are laser-trimmed and stored in on-chip memory. End users only need to configure operational parameters via SICI - no external calibration resistors, DACs, or software compensation routines are required.

What is the thermal performance of the integrated current rail under continuous 50A RMS operation?

On Infineon's reference PCB (140µm copper), the thermal resistance from current rail to soldering point is 0.25 K/W. At 50A RMS, power dissipation is 0.55W (I²R = 50² × 220µΩ), resulting in ~0.14K temperature rise above ambient - negligible for most industrial layouts. The PG-TISON-8 package's exposed thermal pad must be soldered to a ≥2 cm² copper pour for optimal heat spreading and long-term reliability.