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Home > Products > Sensors, Transducers > Current Sensors

Infineon Technologies TLE4973R075T5US0010XUMA1

Name: TLE4973R075T5US0010XUMA1
Brand: Infineon Technologies
SKU: TLE4973R075T5US0010XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4973R075T5US0010XUMA1

Manufacturer:: Infineon Technologies

Category:: Current Sensors

Package:: 8-PowerTDFN

Datasheet:: TLE4973R075T5US0010XUMA1.pdf

Description:: SPEED & CURRENT SENSORS

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Product details

Overview

TLE4973R075T5US0010XUMA1 from Infineon Technologies is a coreless, galvanically isolated analog current sensor IC for high-accuracy DC/AC rail current sensing up to ±82 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 power loss, <1.0 µs over-current detection response, and operates across –40 °C to +125 °C ambient.

For engineers reviewing the TLE4973R075T5US0010XUMA1 datasheet, TLE4973R075T5US0010XUMA1 pinout, TLE4973R075T5US0010XUMA1 application, or TLE4973R075T5US0010XUMA1 equivalent, this page provides verified technical context, pin-level design meaning, automotive-grade isolation specs (1150 V VIORM), DCDI diagnostic interface behavior, and validated alternatives for on-board charger, PV inverter, and smart circuit breaker designs.

Technical Context

The device implements a differential Hall plate architecture with on-chip temperature and stress compensation, eliminating saturation and hysteresis inherent in flux-concentrating open-loop sensors. Its functional isolation barrier supports 1150 V VIORM and ≥1200 V partial discharge, enabling direct integration into high-voltage primary-side current rails without external isolation components.

Configuration is performed via the one-wire Digital Control Diagnostic Interface (DCDI), supporting auto-addressing for up to 8 slaves, EEPROM-based in-system programming of OCD thresholds and sensitivity, and real-time readout of temperature, safety status, and diagnostic mode - all without requiring dedicated SPI/I²C hardware.

Key Specifications

Parameter	Value and Actual Design Meaning
Full-scale current	±82 A - linear sensing range defined per UL-certified configuration; enables accurate measurement of battery charge/discharge currents in OBCs up to 82 A peak.
Supply voltage	4.5–5.5 V - ratiometric operation ensures analog output scaling directly with VDD; eliminates need for precision reference voltage.
Output type	Single-ended analog (AOUT) - quiescent output at VDD/2 (2.5 V @ 5 V supply); 10 mV/A sensitivity enables 0–5 V full-scale swing for ±82 A input.
OCD response time	<1.0 µs - fast open-drain fault signal enables immediate gate shutdown in IGBT/MOSFET power stages during overcurrent events.
Isolation rating	1150 V VIORM - functional galvanic isolation meets reinforced insulation requirements for automotive traction inverters and industrial UPS systems.
Insertion resistance	220 µΩ typical - minimizes conduction loss (e.g., 1.48 W at 82 A RMS), critical for thermal management in compact on-board chargers.
Operating temperature	–40 °C to +125 °C - qualified per AEC-Q100 Grade 1; supports under-hood and power module placement without derating.

Pinout & Package

Package: PG-TISON-8-6 (8 mm × 8 mm × 1.2 mm SMD, exposed thermal pad). Compact footprint enables high-density PCB layout in space-constrained power modules and EV charging units.

Pin/Terminal	Circuit Role	Design Meaning
1 VDD	Primary supply input	5 V nominal supply; powers internal analog/digital blocks and bias circuits; requires local 100 nF ceramic decoupling.
2 GND	Analog/digital ground reference	Common return path for VDD, AOUT, OCD, and DCDI; must be connected to low-impedance ground plane adjacent to thermal pad.
3 VREF	Unused reference pin	No internal connection; must remain unconnected (open) - floating VREF avoids parasitic coupling into sensitive analog path.
4 AOUT	Analog current-sense output	Ratiometric single-ended voltage output (0–5 V for ±82 A); load capacitance limited to 6–8 nF to maintain stability and bandwidth.
5 OCD	Open-drain over-current flag	Active-low fault signal; requires external pull-up to VDD; asserts within 1 µs of threshold violation; short to GND if unused.
6 DCDI	One-wire UART diagnostic interface	Open-drain bidirectional bus line; supports EEPROM read/write, temperature monitoring, and safety status polling; short to VDD if unused.
7 IP−	Negative current terminal	Current-out terminal of integrated 220 µΩ shunt rail; connects to load side of monitored conductor; defines current direction polarity.
8 IP+	Positive current terminal	Current-in terminal of integrated shunt rail; connects to source side (e.g., battery+, DC-link+); completes current path through sensor die.

Key Features

Feature	Design Value
Differential Hall sensing	Eliminates magnetic stray field interference - enables reliable operation near high-current busbars or transformers without shielding.
In-system EEPROM calibration	Supports end-of-line sensitivity and offset trimming via DCDI - removes need for external calibration fixtures in automated production.
Configurable OCD threshold	User-programmable trip point (e.g., ±114 A for 1.39×FS) - allows dynamic adaptation to system protection requirements without hardware change.
ASIL B Safety Element	Delivers documented failure modes, diagnostic coverage, and safe state behavior - reduces functional safety validation effort in ISO 26262-compliant automotive ECUs.
Ultra-low insertion loss	220 µΩ typical resistance - cuts conduction losses by >50% versus discrete shunt + op-amp solutions at 82 A, improving thermal margin in sealed enclosures.

Applications

On-Board Charger (OBC)

PV Inverter DC-Link Monitoring

Use Scenario: Real-time measurement of bidirectional AC/DC converter input current during EV charging cycles.

IC Role / Device Role / Timing Role: Coreless current sensor providing isolated analog feedback to MCU ADC for closed-loop current control and thermal derating.

Use Value: 220 µΩ insertion resistance minimizes heat generation in confined OBC housings; ±82 A range covers full 11 kW charging profile with headroom.

Use Scenario: High-side DC-link current monitoring in string inverters to detect ground faults and optimize MPPT tracking.

IC Role / Device Role / Timing Role: Galvanically isolated analog sensor interfacing directly to DC-link bus without external isolators or shunts.

Use Value: 1150 V VIORM rating enables direct connection to 1000 V DC systems; differential sensing rejects common-mode noise from switching transients.

Smart Circuit Breaker

Industrial UPS Load Current Sensing

Use Scenario: Fast over-current detection and precise RMS current reporting for digital trip unit logic in DIN-rail breakers.

IC Role / Device Role / Timing Role: Primary current sense element feeding both analog control loop and digital safety processor via AOUT and DCDI.

Use Value: Sub-1 µs OCD response enables selective coordination with upstream breakers; EEPROM-stored calibration ensures long-term accuracy drift <0.5% over 15 years.

Use Scenario: Continuous monitoring of battery bank discharge current in mission-critical data center UPS systems.

IC Role / Device Role / Timing Role: Isolated current transducer delivering ratiometric analog output to redundant controller ADCs for load balancing and runtime estimation.

Use Value: AEC-Q100 Grade 1 qualification ensures reliability under continuous 24/7 operation; VDD/2 quiescent output simplifies ADC zero-point alignment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ACS724LLCTR-80AU-T	80 A full-scale, 5 V supply, but uses planar Hall sensor (not differential); no DCDI interface; only basic OCD output.	Lacks EEPROM programmability and diagnostic readback; no ASIL B documentation; lower stray field immunity.	Choose when cost sensitivity outweighs diagnostic depth and functional safety compliance.
TLE4972R025T5U	25 A full-scale variant in same PG-TISON-8-6 package; identical DCDI, isolation, and safety architecture.	Lower current range limits use to auxiliary supplies or low-power inverters; not suitable for main OBC or DC-link monitoring.	Choose only when system peak current remains ≤25 A and board space reuse is prioritized over range flexibility.

Compared with ACS724LLCTR-80AU-T, TLE4973R075T5US0010XUMA1 adds ASIL B safety evidence, DCDI diagnostics, and superior stray field rejection - critical for automotive and grid-tied systems. Versus TLE4972R025T5U, it doubles full-scale range while retaining identical footprint and interface, enabling scalable design reuse across power tiers.

Availability

TLE4973R075T5US0010XUMA1 is available at Aetrix Electronics and suitable for on-board chargers, PV inverters, and smart circuit breakers requiring stable component supply, automotive-grade reliability, and functional safety certification.

Supply support for TLE4973R075T5US0010XUMA1 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 microcontrollers, and sensor solutions, with global manufacturing and R&D infrastructure.

The XENSIV™ TLE4973 product line delivers coreless current sensing ICs optimized for high-voltage, high-reliability applications including electric vehicle powertrain, renewable energy conversion, and industrial safety-critical systems.

FAQ

What is the purpose of the VREF pin on TLE4973R075T5US0010XUMA1?

VREF is an unconnected, internally unused pin. It must remain open (unbonded, floating) per Infineon's datasheet guidance. Connecting VREF risks introducing noise or leakage paths into the analog signal chain, degrading offset stability and temperature drift performance. No external components or traces should attach to this pin.

Can the OCD output be used without an external pull-up resistor?

No - OCD is an open-drain output requiring an external pull-up resistor to VDD (typically 4.7 kΩ). Without pull-up, the OCD signal cannot transition high after fault clearance, causing persistent latch-up in downstream logic. The datasheet explicitly states "short to GND if not used", confirming active-low assertion and mandatory pull-up for functional use.

How does the DCDI interface handle multiple devices on one bus?

DCDI uses auto-addressing: each device samples its unique marking (e.g., H73E3ROH10) during power-on reset to assign a slave address. Up to 8 devices can share one DCDI bus with no external address pins or jumpers. Communication follows a UART-like protocol with start/stop bits and CRC-8 error checking, enabling daisy-chain configuration in multi-phase inverters.

Is the 220 µΩ insertion resistance measured at DC or AC conditions?

The 220 µΩ value is the typical DC resistance of the integrated current rail at 25 °C, measured with low-frequency (<1 Hz) current. At high frequencies (>10 kHz), skin effect increases effective resistance slightly - datasheet specifies AC RMS current limits (±70 A) separately to account for thermal rise under switching conditions, but DC resistance remains the baseline for conduction loss calculation.

TLE4973R075T5US0010XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-PowerTDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

For Measuring:: DC

Sensor Type:: Hall Effect

Current - Sensing:: -

Number of Channels:: 1

Output:: Analog Voltage

Sensitivity:: -

Frequency:: 210kHz

Linearity:: -

Accuracy:: -

Voltage - Supply:: 4.5V ~ 5.5V

Response Time:: -

Current - Supply (Max):: 25mA

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Polarization:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TISON-8-6

TLE4973R075T5US0010XUMA1 FAQ

1.How can I place an order for TLE4973R075T5US0010XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4973R075T5US0010XUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLE4973R075T5US0010XUMA1 reliable?

The price and inventory of TLE4973R075T5US0010XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4973R075T5US0010XUMA1 is usually 5 days.

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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4973R075T5US0010XUMA1 transactions.

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TLE4973R075T5US0010XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4973R075T5US0010XUMA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLE4973R075T5US0010XUMA1?

For technical support, including TLE4973R075T5US0010XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4973R075T5US0010XUMA1 requirements.

6.How does Aetrix verify that TLE4973R075T5US0010XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE4973R075T5US0010XUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4973R075T5US0010XUMA1 meets industry standards.

7.What is the process for return or replacement of TLE4973R075T5US0010XUMA1?

All TLE4973R075T5US0010XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4973R075T5US0010XUMA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLE4973R075T5US0010XUMA1 part is unused and in its original packaging.

Return procedure for TLE4973R075T5US0010XUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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