Infineon Technologies TLE4971A025N5E0001XUMA1

Overview

TLE4971A025N5E0001XUMA1 from Infineon is a coreless magnetic current sensor for automotive-grade DC/AC current sensing up to ±25A, featuring 48 mV/A sensitivity in semi-differential mode, 210 kHz bandwidth, 220 µΩ integrated current rail resistance, and galvanic functional isolation rated to 1150 V_peak. It delivers high-accuracy measurement in On-Board Chargers and motor inverters without end-of-line calibration.

For engineers reviewing the TLE4971A025N5E0001XUMA1 datasheet, TLE4971A025N5E0001XUMA1 pinout, TLE4971A025N5E0001XUMA1 application in OBC or inverter current monitoring, or TLE4971A025N5E0001XUMA1 equivalent for ±25A isolated sensing, this page provides verified technical context, pin-level design meaning, output mode configuration options, and validated alternatives with OCD threshold and sensitivity alignment.

Technical Context

The TLE4971A025N5E0001XUMA1 implements a differential Hall plate architecture with on-chip signal conditioning, EEPROM-programmable OCD thresholds (1.25× and 0.82× full-scale), and deglitch filtering. Its 220 µΩ current rail enables <0.15 W power loss at 25 A RMS, while <1 nH parasitic inductance supports fast transient response.

It operates in semi-differential analog output mode by default, delivering 1.65 V quiescent voltage and 48 mV/A sensitivity for ±25 A full-scale range. The device uses internal self-diagnostic routines and supports Serial Inspection and Configuration Interface (SICI) programming without external components.

Key Specifications

Pinout & Package

Delivered in PG-TISON-8-5 package (8 mm × 8 mm × 1.8 mm, exposed thermal pad), this surface-mount sensor integrates primary current terminals and signal I/O in a single compact footprint optimized for high-current PCB routing and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ±25A isolated current sensing applications.

Compared with ACS724LLCTR-25AB-T and TMCS1100A4QDR, the TLE4971A025N5E0001XUMA1 uniquely combines integrated 220 µΩ current rail, dual programmable OCD outputs, and 50 dB stray-field rejection-making it optimal for space-constrained automotive inverters where reliability under EMI and fast fault response are critical.

Availability

TLE4971A025N5E0001XUMA1 is available at Aetrix Electronics and suitable for On-Board Chargers, traction inverters, and servo drives requiring stable component supply, automotive qualification (AEC-Q100 Grade 0), and long-term lifecycle support.

Supply support for TLE4971A025N5E0001XUMA1 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 electronics, and sensor solutions, with global R&D and manufacturing infrastructure.

The TLE4971 product line delivers high-precision, coreless current sensing for automotive electrification systems-including OBCs, inverters, and battery management-where galvanic isolation, thermal robustness, and functional safety compliance are mandatory.

FAQ

What output modes does the TLE4971A025N5E0001XUMA1 support, and how do they affect system design?

This sensor supports semi-differential (default), fully-differential, and single-ended analog output modes. Semi-differential uses VREF as a buffered 1.65 V reference and AOUT as the signal output-ideal for single-supply MCUs. Fully-differential doubles voltage swing using both pins as complementary outputs, improving SNR. Single-ended requires external VREF and reduces common-mode rejection. Mode selection is EEPROM-programmable and affects PCB layout, ADC interface, and noise immunity.

How is over-current detection implemented, and can thresholds be adjusted in-circuit?

The device features two independent open-drain OCD outputs (OCD1 and OCD2) with factory-set thresholds at 1.25× and 0.82× full-scale (±31.25 A and ±20.5 A). Both thresholds, blanking times, and deglitch filters are user-programmable via the Serial Inspection and Configuration Interface (SICI) without external hardware. This allows runtime adaptation to different fault-clearing strategies in motor control or charger applications.

Does the TLE4971A025N5E0001XUMA1 require external calibration or trimming during production?

No. The device ships fully calibrated for offset, sensitivity, linearity, and temperature drift across −40°C to +125°C. All calibration data is stored in on-chip EEPROM. No end-of-line calibration is needed-reducing test time and fixture complexity. System-level accuracy depends only on PCB layout, decoupling, and ADC reference stability-not sensor trimming.

What thermal performance can be expected when operating at 25 A RMS continuously?

At 25 A RMS, the 220 µΩ current rail dissipates ≈138 mW. On an Infineon reference PCB with 140 µm copper, thermal resistance from junction to solder point is 0.25 K/W, resulting in ≈35°C temperature rise above ambient. With ambient at 105°C (max continuous rating), junction temperature remains below 130°C-ensuring 15-year lifetime per Infineon's life model at 32 A RMS and 70°C case temperature.