Infineon Technologies TLE4971A120N5UE0001XUMA1

Overview

TLE4971A120N5UE0001XUMA1 from Infineon is a high-precision, coreless magnetic current sensor in PG-TISON-8-5 package, designed for automotive-grade DC/AC current sensing up to ±120 A with 220 µΩ insertion resistance, 210 kHz bandwidth, and integrated EEPROM-programmable over-current detection outputs (OCD1/OCD2). It delivers galvanic functional isolation up to 1150 V_peak and is pre-calibrated for use in onboard chargers and motor inverters without end-of-line calibration.

For engineers reviewing the TLE4971A120N5UE0001XUMA1 datasheet, TLE4971A120N5UE0001XUMA1 pinout, TLE4971A120N5UE0001XUMA1 application, or TLE4971A120N5UE0001XUMA1 equivalent, key selection criteria include its UL-certified isolation rating, semi-differential analog output mode with 1.65 V quiescent voltage, dual open-drain OCD thresholds (1.25×/0.82× full-scale), and configurable deglitch filtering for robust over-current response in noisy power electronics environments.

Technical Context

The TLE4971A120N5UE0001XUMA1 implements a differential Hall plate architecture with on-chip signal conditioning and self-diagnostic capability, enabling accurate stray-field suppression (>50 dB) and stable sensitivity over temperature (−40°C to +125°C). Its integrated current rail eliminates external shunt resistors while maintaining ultra-low parasitic inductance (<1 nH).

Configuration is performed via Serial Inspection and Configuration Interface (SICI), storing user-defined parameters-including OCD thresholds, blanking times, and output mode-in embedded EEPROM. The device supports three analog output configurations: semi-differential (default), single-ended, and fully-differential-with ratiometric options enabled per application need.

Key Specifications

Pinout & Package

Package: PG-TISON-8-5, 8 mm × 8 mm surface-mount package with exposed thermal pad, optimized for high-current PCB routing and thermal dissipation in automotive power modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS770KCB-150U-PFF-T and TMCS1108A4U, the TLE4971A120N5UE0001XUMA1 uniquely integrates UL-certified isolation, dual hardware OCD outputs with zero-deglitch, and EEPROM-configurable modes-making it the only option qualified for ASIL-B automotive OBC and inverter designs requiring functional safety and zero-latency fault response.

Availability

TLE4971A120N5UE0001XUMA1 is available at Aetrix Electronics and suitable for onboard chargers, motor inverters, and overcurrent protection systems requiring stable component supply, automotive qualification, and long-lifecycle support.

Supply support for TLE4971A120N5UE0001XUMA1 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 global R&D and manufacturing infrastructure supporting AEC-Q100 qualified components.

The TLE4971 product line delivers high-accuracy, coreless current sensing for next-generation EV powertrain systems-including OBCs, traction inverters, and battery disconnect units-where galvanic isolation, fast fault response, and long-term calibration stability are mandatory.

FAQ

What is the maximum continuous current rating for TLE4971A120N5UE0001XUMA1?

The device supports ±70 A RMS continuous current at high frequency (≥10 Hz) and ±70 A peak at low frequency (<10 Hz), validated on Infineon's reference PCB. Its 250 A single-peak surge rating (10 µs) accommodates short-term inrush and fault conditions without damage. Thermal derating applies above +105°C ambient at the soldering point.

Does TLE4971A120N5UE0001XUMA1 require external calibration after soldering?

No. The device ships fully calibrated from Infineon and requires no end-of-line calibration. Its monolithic Hall sensor, integrated current rail, and factory-trimmed EEPROM settings ensure ≤1% total error across −40°C to +125°C without customer adjustment. Only SICI programming is needed for output mode or OCD threshold changes.

How does the semi-differential output mode simplify system design?

In semi-differential mode, VREF provides a stable 1.65 V reference output while AOUT delivers a proportional analog voltage centered at that level. This eliminates the need for external reference buffers or differential ADCs, reduces PCB area, and improves noise immunity compared to single-ended shunt-based solutions-all while maintaining bidirectional sensing capability.

Can OCD1 and OCD2 be wired together on the same net?

Yes. Both OCD1 and OCD2 are open-drain outputs with active-low assertion and share the same logic threshold. They can be directly wire-ANDed using a single pull-up resistor to generate a unified overcurrent signal, enabling hierarchical protection (e.g., OCD1 for warning, OCD2 for immediate shutdown) without additional logic gates or MCU polling.