Infineon Technologies TLI4970D050T5XUMA1

Overview

TLI4970D050T5 from Infineon Technologies is a coreless magnetic current sensor IC for isolated AC/DC current measurement up to ±50 A, featuring 16-bit SPI digital output (13-bit current data), galvanic isolation rated to 2.5 kV (UL 1577), fast overcurrent detection with configurable threshold, and integrated primary conductor eliminating external calibration. It targets motor control inverters, industrial power supplies, and battery management systems requiring high linearity and stray-field immunity.

For engineers reviewing the TLI4970D050T5 datasheet, TLI4970D050T5 pinout, TLI4970D050T5 application, or TLI4970D050T5 equivalent, key selection criteria include its ±50 A measurement range, 2.9 % total error at room temperature, 13-bit current resolution, OCD response time of ≤1.5 µs, and PG-TISON-8-1 package compatibility with standard SMD reflow processes.

Technical Context

The TLI4970D050T5 employs a differential Hall-based sensing architecture with on-chip flux concentrators and integrated primary conductor, enabling coreless operation and intrinsic immunity to external magnetic fields. Its signal chain includes analog front-end amplification, 16-bit sigma-delta ADC, digital filtering, and SPI interface logic.

It supports two operating modes: continuous readout via SPI (5 MHz max clock) and asynchronous fast overcurrent detection via dedicated OCD pin with programmable threshold (±10 A to ±50 A in 10 A steps). The device operates across –40 °C to +125 °C ambient temperature with internal temperature compensation.

Key Specifications

Pinout & Package

The TLI4970D050T5 is housed in a leadless, surface-mount PG-TISON-8-1 package (7 mm × 7 mm, 0.65 mm pitch, 0.85 mm height), optimized for high-current PCB trace integration and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-50AB-T and TMR1103-50A, the TLI4970D050T5 uniquely combines digital SPI output, hardware OCD with sub-microsecond latency, ±50 A full scale, and 2.5 kV isolation in one compact package - making it optimal for safety-critical, space-constrained, and digitally controlled power systems.

Availability

TLI4970D050T5 is available at Aetrix Electronics and suitable for motor control inverters, industrial switch-mode power supplies, battery management systems, and EV onboard chargers requiring stable component supply, long-term lifecycle support, and AEC-Q100-adjacent reliability validation.

Supply support for TLI4970D050T5 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 AG is a German semiconductor manufacturer specializing in power management, sensor solutions, and automotive ICs, with global R&D and manufacturing infrastructure.

The TLI4970 series belongs to Infineon's Sense & Control portfolio, designed specifically for high-accuracy, isolated current measurement in industrial automation, renewable energy inverters, and electrified transportation systems.

FAQ

What is the maximum achievable update rate for current measurements?

The TLI4970D050T5 supports SPI clock speeds up to 5 MHz. With a fixed 16-bit frame and typical CSN setup/hold timing, sustained readout rates reach 250 kSPS. This enables sampling at 100 kHz with oversampling and digital filtering for enhanced noise rejection in noisy power electronics environments.

Does the device require external calibration during production?

No. The TLI4970D050T5 features an integrated primary conductor and factory-trimmed signal chain, delivering ±50 A full-scale accuracy with ≤2.9 % total error at 25 °C out-of-box. No end-of-line calibration or shunt resistor matching is required, reducing test time and fixture complexity.

How is galvanic isolation achieved without a transformer or optocoupler?

Isolation is implemented via capacitive coupling across a molded polymer barrier inside the PG-TISON-8-1 package. The dielectric structure meets UL 1577 (2.5 kV RMS) and IEC 60747-5-2 standards, providing reinforced insulation between primary current path and secondary digital interface without magnetic or optical components.

Can multiple TLI4970D050T5 sensors share a single SPI bus?

Yes. The device supports parallel bus mode using individual CSN lines per sensor, or daisy-chain mode via MISO-to-MOSI cascading. Configuration registers allow unique device addressing and independent OCD threshold setting - essential for multi-phase motor control or modular power supply designs.