Infineon Technologies TLI4971A120T5UE0001XUMA1

Overview

TLI4971A120T5UE0001XUMA1 from Infineon is a high-precision coreless magnetic current sensor in PG-TISON-8 package, designed for ±120A AC/DC measurement with analog output and dual fast over-current detection (OCD) outputs. It features 220µΩ insertion resistance, <1nH parasitic inductance, 240kHz bandwidth, galvanic isolation up to 1150V, and factory-calibrated semi-differential output mode. Used in electrical drives and PV inverters where stray-field immunity and fast fault response are critical.

For engineers reviewing the TLI4971A120T5UE0001XUMA1 datasheet, TLI4971A120T5UE0001XUMA1 pinout, TLI4971A120T5UE0001XUMA1 application, or TLI4971A120T5UE0001XUMA1 equivalent, key selection criteria include its UL-certified 3500V_RMS isolation, programmable OCD thresholds (1.25× and 0.82× FS), non-ratiometric sensitivity, EEPROM-stored configuration, and differential Hall sensing for >60dB stray-field suppression.

Technical Context

The device implements a differential Hall plate architecture that measures magnetic flux generated by current flow through an integrated low-inductance rail (220µΩ, <1nH), eliminating saturation and hysteresis inherent in cored sensors. Its signal path includes temperature- and stress-compensated amplification, followed by a configurable output stage supporting single-ended, fully-differential, or semi-differential modes.

Two independent open-drain OCD outputs are driven by raw Hall signals processed through user-programmable comparators with deglitch filtering (0–10µs). Configuration-including OCD thresholds, output mode, and reference voltage-is stored in on-chip EEPROM and updated via Serial Inspection and Configuration Interface (SICI), enabling field reprogramming without recalibration.

Key Specifications

Pinout & Package

TLI4971A120T5UE0001XUMA1 is housed in an 8-pin PG-TISON-8 surface-mount package (8mm × 8mm × 2.3mm), optimized for high-current PCB integration with exposed thermal pad and integrated current rail terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-120AU-T and TMR2103-120A, TLI4971A120T5UE0001XUMA1 uniquely combines UL-certified isolation, dual independently programmable OCD outputs, EEPROM-based configuration, and coreless architecture-enabling faster fault response, lower system BOM, and simplified compliance in safety-critical inverters and drives.

Availability

TLI4971A120T5UE0001XUMA1 is available at Aetrix Electronics and suitable for electrical drives, PV inverters, and industrial chargers requiring stable component supply, long-lifecycle support, and certified isolation performance.

Supply support for TLI4971A120T5UE0001XUMA1 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 MCUs, and sensor solutions, with leadership in silicon carbide, radar, and isolated current sensing technologies.

TLI4971 belongs to Infineon's TLI high-precision current sensor product line, engineered specifically for industrial motor control, renewable energy conversion, and EV infrastructure where galvanic isolation, wide bandwidth, and field-programmable protection are mandatory.

FAQ

What is the default output configuration of TLI4971A120T5UE0001XUMA1?

The device ships pre-configured in semi-differential output mode with 1.65V internal reference on VREF and analog output on AOUT. Sensitivity is set to 10mV/A (±120A full scale), OCD1 threshold at 1.25× FS (±150A), OCD2 at 0.82× FS (±98.4A), and deglitch filter at 0µs. All parameters are stored in EEPROM and can be modified via SICI interface without hardware changes.

How does the differential Hall architecture improve noise immunity?

Two matched Hall plates measure opposing magnetic polarities from the same current rail, canceling uniform external stray fields. This topology achieves >60dB rejection of 50/60Hz magnetic interference and >40dB suppression of fast-switching EMI from adjacent power devices-verified per IEC 61000-4-8 and -4-9 test standards-without external shielding or compensation circuits.

Can TLI4971A120T5UE0001XUMA1 be used in automotive applications?

No-though qualified to AEC-Q200 stress tests, this variant (marked "U" for UL certification) is specified for industrial use only. It lacks AEC-Q100 Grade 0/1 qualification, automotive-grade temperature range (−40°C to +150°C), and automotive-specific diagnostic coverage. For automotive traction inverters, Infineon recommends the pin-compatible TLI4971-120T5-AE variant with full AEC-Q100 Grade 1 compliance.

What is the thermal performance of the PG-TISON-8 package under continuous 120A load?

At 120A RMS with 140µm copper on a 4-layer Infineon reference PCB, junction-to-solder-point thermal resistance is 0.25K/W. Power dissipation in the current rail is ~3.2W (I²R), resulting in ~0.8°C rise above board temperature. The package supports continuous operation up to +105°C ambient, with maximum junction temperature capped at 130°C-validated over 15-year lifetime per JEDEC JEP47 accelerated testing.