Infineon Technologies TLI4971A120T5E0001XUMA1

Overview

TLI4971A120T5E0001XUMA1 from Infineon is a high-precision coreless magnetic current sensor in PG-TISON-8 package, designed for ±120A AC/DC measurement with analog output and two independent open-drain over-current detection (OCD) outputs. It features 220µΩ insertion resistance, <1nH parasitic inductance, 240kHz bandwidth, galvanic isolation up to 1150V, and factory calibration for industrial inverters and motor drives.

For engineers reviewing the TLI4971A120T5E0001XUMA1 datasheet, TLI4971A120T5E0001XUMA1 pinout, TLI4971A120T5E0001XUMA1 application, or TLI4971A120T5E0001XUMA1 equivalent, this page delivers verified technical context, pin-level design meaning, real-world application mapping, and validated alternative options - all grounded in Infineon's Rev. 1.30 datasheet and official configuration specifications.

Technical Context

The TLI4971A120T5E0001XUMA1 implements differential Hall sensing across an integrated current rail to suppress stray magnetic fields, eliminating saturation and hysteresis inherent in flux-concentrating sensors. Its monolithic architecture includes on-chip temperature/stress compensation and EEPROM-stored configuration for OCD thresholds, blanking times, and output modes (semi-differential default).

It supports three analog output configurations: semi-differential (VREF as internal reference output, AOUT as single-ended signal), single-ended (VREF as external reference input), and fully-differential (AOUT/VREF as complementary outputs). OCD1/OCD2 are open-drain, active-low, and programmable with deglitch filtering - enabling wired-AND fault signaling without external logic.

Key Specifications

Pinout & Package

TLI4971A120T5E0001XUMA1 is housed in PG-TISON-8 - an 8-pin, 8×8mm surface-mount package with exposed thermal pad, optimized for high-current PCB integration and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-100AU-T and TMR2103-100, the TLI4971A120T5E0001XUMA1 uniquely combines UL-certified isolation, dual programmable OCD outputs, integrated low-loss current rail, and differential stray-field immunity - making it the only option qualified for functional safety-compliant industrial inverters requiring simultaneous accuracy, speed, and robustness.

Availability

TLI4971A120T5E0001XUMA1 is available at Aetrix Electronics and suitable for electrical drives, PV inverters, and industrial chargers requiring stable component supply, long-term lifecycle support, and certified isolation performance.

Supply support for TLI4971A120T5E0001XUMA1 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 leader specializing in power management, sensing, and automotive ICs, with global manufacturing and qualification to AEC-Q100 Grade 2 and industrial reliability standards.

The TLI4971 product line delivers coreless current sensing for high-efficiency, high-reliability industrial power conversion - targeting applications where traditional shunts or isolated amplifiers fail due to bandwidth, isolation, or thermal constraints.

FAQ

What is the default analog output mode and how is it configured?

The TLI4971A120T5E0001XUMA1 ships pre-configured in semi-differential mode: VREF outputs a stable 1.65V internal reference, and AOUT delivers a single-ended 0–3.3V signal proportional to current. This mode requires no external reference and supports bidirectional sensing without ratiometric dependency on VDD or VREF. Configuration is stored in EEPROM and can be changed to single-ended or fully-differential via the Serial Inspection and Configuration Interface (SICI) without recalibration.

How does the dual OCD functionality work in practice?

OCD1 and OCD2 are independent open-drain outputs with factory-set thresholds at 1.25×FS (±150A) and 0.82×FS (±98.4A), respectively. Both include user-programmable deglitch filters (0–10µs) to reject switching noise. Their active-low signals can be wired-ANDed on the PCB to generate a unified fault flag, or used separately - e.g., OCD1 for "warning" (derate control) and OCD2 for "trip" (immediate IGBT disable) - enabling graded response to overloads.

Is external calibration required before use?

No external calibration is required. The device is shipped fully calibrated at Infineon's production line, with sensitivity, offset, temperature compensation coefficients, and OCD parameters pre-loaded into embedded EEPROM. End users may reprogram thresholds or output modes via SICI, but no customer-facing calibration step is needed for specified accuracy over −40°C to +105°C ambient.

What PCB layout considerations are critical for optimal performance?

Key layout requirements include: (1) connecting the exposed thermal pad to a large, low-impedance ground plane for thermal and EMI control; (2) routing IP+ and IP− as wide, symmetric copper traces with minimal loop area to preserve <1nH inductance; (3) placing 220nF ceramic decoupling capacitor within 2mm of VDD/GND pins; and (4) shielding AOUT/VREF traces from high-dv/dt nodes to maintain analog integrity - especially critical in SiC-based 100V/ns switching environments.