Infineon Technologies TLE4973R050T5US0010XUMA1

Overview

TLE4973R050T5US0010XUMA1 from Infineon Technologies is a coreless, galvanically isolated analog current sensor IC for high-accuracy DC/AC rail current monitoring up to ±55 A full-scale, with 5 V supply, ratiometric single-ended analog output (AOUT), and integrated over-current detection (OCD) with <1.0 µs response. It features an embedded current rail (220 µΩ typical insertion resistance), ISO 26262 ASIL B Safety Element out of Context qualification, and operates from −40 °C to +125 °C ambient.

For engineers reviewing the TLE4973R050T5US0010XUMA1 datasheet, TLE4973R050T5US0010XUMA1 pinout, TLE4973R050T5US0010XUMA1 application, or TLE4973R050T5US0010XUMA1 equivalent, key selection criteria include its ±55 A linear sensing range, 1150 V_VIORM functional isolation, differential Hall-based stray-field immunity, in-system EEPROM programmability via DCDI interface, and UL 1577 certification for safety-critical automotive and industrial power systems.

Technical Context

The TLE4973R050T5US0010XUMA1 implements a differential Hall plate architecture with on-chip temperature and stress compensation, eliminating saturation and hysteresis inherent in flux-concentrating open-loop sensors. Its integrated current rail enables direct PCB trace integration without external shunts or magnetic cores.

It delivers ratiometric analog output referenced to VDD (quiescent voltage = VDD/2), supports configurable OCD thresholds via internal EEPROM, and communicates diagnostics-including temperature, safety status, and OCD state-through a one-wire UART-based Digital Control Diagnostic Interface (DCDI) with auto-addressing for multi-sensor buses.

Key Specifications

Pinout & Package

Package: PG-TISON-8-6 (8 mm × 8 mm SMD, 0.65 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-50AB-T, TLE4973R050T5US0010XUMA1 adds ASIL B safety evidence, 1150 V isolation, and in-system programmability-critical for automotive and UL-certified power systems. Against TLE4972R025T5U, it trades resolution for 2.2× higher full-scale range, enabling fewer sensors per system in high-power applications.

Availability

TLE4973R050T5US0010XUMA1 is available at Aetrix Electronics and suitable for on-board chargers, PV inverters, and industrial motor drives requiring stable component supply, automotive-grade reliability, and UL-certified galvanic isolation.

Supply support for TLE4973R050T5US0010XUMA1 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 industrial control ICs, with leadership in silicon carbide and magnetic sensing technologies.

The XENSIV™ TLE4973 product line delivers high-accuracy, coreless current sensing for safety-critical automotive and industrial power conversion systems-designed to replace shunt resistors and optocouplers with integrated, calibrated, and certified solutions.

FAQ

What is the maximum continuous primary current the TLE4973R050T5US0010XUMA1 can measure?

The device is specified for continuous ±55 A DC or AC current within its linear range, validated per Table 8 of the datasheet. Absolute maximum ratings allow ±70 A RMS at high frequency (≥10 Hz) and ±70 A peak at low frequency (<10 Hz), but sustained operation beyond ±55 A may incur nonlinearity exceeding ±1 %.

Does the TLE4973R050T5US0010XUMA1 require external calibration after soldering?

No-each unit is pre-calibrated across temperature at Infineon's factory and stores trim coefficients in on-chip EEPROM. End-of-line calibration is optional and only needed if system-level accuracy tighter than ±0.5 % is required; it uses the DCDI interface and does not require external equipment beyond a UART host.

Can the OCD threshold be adjusted in the field after deployment?

Yes-the Over-Current Detection threshold is stored in EEPROM and fully reprogrammable via the DCDI one-wire interface at any time, including in-system during operation. Thresholds can be set from 1.0× to 1.39× full scale (±55 A), with deglitch filter settings configurable to reject transient spikes.

Is the TLE4973R050T5US0010XUMA1 compatible with 3.3 V microcontrollers?

The DCDI interface operates at VDD = 5 V and requires 5 V logic levels; however, the OCD output is open-drain and can be pulled to 3.3 V with an external resistor. The AOUT analog output is ratiometric to VDD, so its full-scale swing is 0–5 V-not directly compatible with 3.3 V ADCs without scaling or level-shifting circuitry.