Infineon Technologies TLE4971A120N5E0001XUMA1

Overview

TLE4971A120N5E0001XUMA1 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. It features 220 µΩ integrated current rail resistance, 210 kHz bandwidth, <1 nH parasitic inductance, and factory-calibrated semi-differential analog output with 1.65 V quiescent voltage. Used in onboard chargers and motor inverters where galvanic isolation (1150 V_peak VIORM) and stray-field immunity are critical.

For engineers reviewing the TLE4971A120N5E0001XUMA1 datasheet, TLE4971A120N5E0001XUMA1 pinout, TLE4971A120N5E0001XUMA1 application, or TLE4971A120N5E0001XUMA1 equivalent, key selection criteria include full-scale range (±120 A), OCD threshold programmability, output mode configuration (semi-differential default), thermal derating at 125°C ambient, and EEPROM-based diagnostics enablement.

Technical Context

The TLE4971A120N5E0001XUMA1 implements differential Hall sensing with on-chip signal conditioning, enabling accurate current measurement without magnetic core saturation or hysteresis. Its internal EEPROM stores user-configurable parameters including OCD1/OCD2 thresholds (1.25×/0.82× FS), blanking times, and output mode-eliminating external components.

It supports three analog output configurations: semi-differential (default, VREF as internal reference output, AOUT as single-ended signal), fully-differential (AOUT and VREF as complementary outputs), and single-ended (VREF as external reference input). OCD outputs are open-drain, active-low, and wire-ANDable for system-level fault signaling.

Key Specifications

Pinout & Package

Package: PG-TISON-8-5 (8 mm × 8 mm × 1.9 mm, exposed thermal pad, RoHS-compliant SMD).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-100U-T and TMCS1108A4U, the TLE4971A120N5E0001XUMA1 provides superior bandwidth (210 kHz), lower insertion loss (220 µΩ), integrated diagnostics, and dual independently configurable OCD outputs-making it optimal for ASIL-B automotive inverters requiring robust fault handling.

Availability

TLE4971A120N5E0001XUMA1 is available at Aetrix Electronics and suitable for onboard chargers, motor inverters, servo drives, and industrial battery management systems requiring stable component supply, automotive qualification (AEC-Q100 Grade 0), and long-term lifecycle support.

Supply support for TLE4971A120N5E0001XUMA1 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 automotive qualification expertise.

The TLE4971 belongs to Infineon's high-accuracy coreless current sensor product line, engineered specifically for demanding automotive electrification applications-including traction inverters, OBCs, and DC-DC converters-where isolation, bandwidth, and reliability are non-negotiable.

FAQ

What output modes does the TLE4971A120N5E0001XUMA1 support, and how are they configured?

The device supports semi-differential (default), fully-differential, and single-ended analog output modes. Configuration is performed via Infineon's Serial Inspection and Configuration Interface (SICI) and stored in on-chip EEPROM. Semi-differential uses VREF as internal reference output and AOUT as signal output; fully-differential uses both pins as complementary outputs; single-ended uses VREF as external reference input. No external components are needed for mode selection.

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

OCD1 and OCD2 are independent open-drain outputs triggered by comparators monitoring the raw Hall signal. Thresholds are programmable via EEPROM as scaling factors (e.g., 1.25× or 0.82× full scale) and include user-configurable deglitch filters. Both outputs are active-low and wire-ANDable, enabling centralized fault signaling without additional logic gates.

Does the TLE4971A120N5E0001XUMA1 require external calibration or trimming after soldering?

No. The device ships fully calibrated from Infineon with factory-trimmed sensitivity, offset, and linearity. Its coreless design eliminates aging-related drift, and the integrated EEPROM retains configuration across power cycles. No end-of-line calibration or external trim components are required for production deployment.

What thermal considerations apply when operating at maximum ambient temperature (125°C)?

At TS = 125°C, the device is rated for continuous operation at ≤32 A RMS (per Infineon lifetime model). Derating is required above this current due to junction temperature limits (T_j,max = 130°C). Thermal resistance R_THJS = 0.25 K/W is measured on Infineon's reference PCB; actual performance depends on board copper area and airflow. Use the exposed thermal pad for optimal heat dissipation.