Infineon Technologies TLE4973R120T5S0010XUMA1

Overview

TLE4973R120T5S0010XUMA1 from Infineon Technologies is a coreless, galvanically isolated magnetic current sensor for high-accuracy DC/AC rail current monitoring up to ±132 A, featuring ratiometric 5 V single-ended analog output (AOUT), integrated 220 µΩ current rail, and ISO 26262 ASIL B Safety Element out of Context compliance. It delivers ultra-low insertion loss and operates across −40 °C to +125 °C ambient temperature in automotive-grade AEC-Q100 Grade 1 applications including on-board chargers and PV inverters.

For engineers reviewing the TLE4973R120T5S0010XUMA1 datasheet, TLE4973R120T5S0010XUMA1 pinout, TLE4973R120T5S0010XUMA1 application, or TLE4973R120T5S0010XUMA1 equivalent, key selection criteria include its ±132 A full-scale range, 1.0 µs over-current detection latency, differential Hall sensing architecture, EEPROM-programmable OCD threshold, and PG-TISON-8-6 SMD package with functional isolation up to 1150 V_VIORM.

Technical Context

The device employs a dual-differential Hall plate architecture that cancels stray magnetic fields and eliminates saturation/hysteresis artifacts common in flux-concentrating sensors. Its signal path integrates temperature- and stress-compensated amplification, enabling stable offset and sensitivity over lifetime and temperature.

Functional safety is implemented via an ASIL B-compliant safety element with built-in diagnostics: undervoltage/overvoltage detection, OCD status reporting, and real-time temperature readout via the one-wire DCDI interface - supporting up to 8 slaves on a shared bus with auto-addressing.

Key Specifications

Pinout & Package

Delivered in PG-TISON-8-6 surface-mount package (8 mm × 8 mm footprint, 1.2 mm height), optimized for PCB area efficiency and thermal performance in high-power modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-130U-T and TLE4972R130T5S0010XUMA1, the TLE4973R120T5S0010XUMA1 uniquely combines UL 1577 certification, ASIL B safety element status, and user-configurable OCD timing - making it the only choice for production automotive OBCs and ISO 26262-compliant systems requiring field calibration.

Availability

TLE4973R120T5S0010XUMA1 is available at Aetrix Electronics and suitable for on-board chargers, PV inverters, smart circuit breakers, and industrial motor drives requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.

Supply support for TLE4973R120T5S0010XUMA1 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 manufacturing and R&D infrastructure.

The XENSIV™ TLE4973 product line targets high-accuracy, safety-critical current sensing in electric vehicle powertrains and renewable energy systems - designed specifically to replace shunt-based solutions while meeting ASIL B and UL 1577 requirements.

FAQ

What is the maximum primary current the TLE4973R120T5S0010XUMA1 can measure continuously?

The device supports continuous operation up to ±132 A full-scale range with guaranteed linearity and accuracy. Absolute maximum ratings allow ±250 A single-peak pulses (10 µs duration, 10 lifetime assertions). Thermal equilibrium testing confirms stable performance at ±70 A RMS or peak under 10 Hz conditions on Infineon's reference PCB.

How does the DCDI interface function, and what can be configured via it?

The DCDI is a one-wire UART interface supporting auto-addressing for up to 8 devices on a shared bus. It enables read/write access to internal registers for temperature monitoring, OCD and safety status reporting, EEPROM programming of sensitivity and OCD thresholds, and activation of diagnostic mode - all without requiring additional communication lines or external controllers.

Is the TLE4973R120T5S0010XUMA1 UL-certified, and what does that cover?

Yes - the "U" variant (TLE4973-R120T5-U-S0010) carries UL 1577 certification, validating its galvanic isolation barrier for reinforced insulation up to 1150 V_VIORM and partial discharge capability ≥1200 V. This certification applies specifically to the UL-marked ordering code SP005960666, confirming suitability for high-voltage battery systems in EVs and energy storage.

Can the OCD threshold be adjusted, and what is the lowest configurable value?

Yes - the OCD threshold is fully programmable via DCDI and EEPROM. For the TLE4973R120T5S0010XUMA1, the default is ±1.39×FS (±183.5 A), but users may configure lower values. The minimum threshold is limited by noise floor and resolution; datasheet Table 1 specifies customer-adjustable ITHR settings, with practical lower bound ~±10% FS depending on deglitch filter configuration.