Infineon TLE6368G2AUMA1: A Comprehensive Technical Overview

The Infineon TLE6368G2AUMA1 is a highly integrated, monolithic dual-channel low-side switch designed to meet the rigorous demands of automotive and industrial applications. Fabricated using Infineon's proprietary SPT9 (Smart Power Technology 9) process, this device combines robust power handling with sophisticated diagnostic and protection features, making it an ideal solution for driving resistive and inductive loads such as valves, relays, and lamps.

At its core, the TLE6368G2AUMA1 consists of two independent channels, each capable of driving loads with a continuous current of up to 1.8 A per channel. The device operates from a wide supply voltage range of 3.0 V to 28 V, ensuring compatibility with various vehicle electrical systems, including those subjected to load dump and jump-start conditions. Each channel is controlled via a separate CMOS-compatible input pin, allowing for straightforward interfacing with microcontrollers.

A key strength of this IC lies in its comprehensive suite of diagnostic and protection functions. Each channel is equipped with advanced over-current protection that operates by monitoring the voltage drop across the internal DMOS power transistor. Crucially, the device features over-temperature protection with precise shutdown and automatic restart, safeguarding the silicon from damage during fault conditions. Furthermore, the inclusion of active clamp circuitry protects the switch from energy spikes when switching inductive loads, enhancing system reliability.

Diagnostic capabilities are communicated through a dedicated current-sense (IS) output pin. This pin provides a current proportional to the load current of the active channel(s), enabling the system microcontroller to perform real-time monitoring for open-load detection (both in on and off states) and short-circuit conditions. The device also incorporates reverse battery protection (-40 V) and is designed to be highly resistant to electrostatic discharge (ESD), aligning with the harsh requirements of the automotive environment.

Housed in a space-efficient PG-DSO-14 package, the TLE6368G2AUMA1 offers excellent thermal performance due to its exposed die pad, which facilitates efficient heat dissipation to the PCB. Its AEC-Q100 qualification ensures it meets the stringent quality and reliability standards for automotive electronic components.

ICGOODFIND: The Infineon TLE6368G2AUMA1 stands out as a robust and intelligent power switch, offering a compelling blend of high current drive, extensive diagnostic feedback, and robust protective features. Its design is meticulously tailored for automotive resilience, making it a superior choice for engineers developing reliable electronic control units (ECUs) for body electronics and powertrain systems.

Keywords: Automotive, Dual-Channel Low-Side Switch, Diagnostic Features, Over-Current Protection, SPT9 Technology.