Infineon Technologies TLE9271QXXUMA2

Overview

TLE9271QXXUMA2 from Infineon Technologies is a high-end automotive System Basis Chip (SBC) integrating HS-CAN FD transceiver (ISO 11898-2:2016, up to 5 Mbps), dual LIN 2.2 transceivers, 750 mA buck SMPS (5 V), 5 V/100 mA LDO with off-board protection, and DC/DC boost converter for low-battery operation. It serves as primary MCU power supply and bus interface in body control modules and gateways.

For engineers reviewing the TLE9271QXXUMA2 datasheet, TLE9271QXXUMA2 pinout, TLE9271QXXUMA2 application, or TLE9271QXXUMA2 equivalent, key selection criteria include CAN FD timing compliance, dual-LIN configurability, SBC Stop/Sleep quiescent current (<30 µA), SPI-based configuration, and AEC-Q100 qualification for permanent battery-connected systems.

Technical Context

The TLE9271QX implements a hierarchical state machine with six operational modes (Normal, Stop, Sleep, Fail-Safe, Restart, Development), each with distinct power sequencing, regulator activation, and wake-source enablement. Its SMPS buck operates in PWM/PSM hybrid mode during Stop mode to maintain <30 µA system current while sustaining 5 V output under load.

CAN FD communication uses dedicated TXD/RXD pins with programmable dominant timeout and bus-clamp protection; LIN transceivers support Flash mode programming and bi-level wake detection via shared WAKE_IN pin. Supervision includes windowed watchdog, fail-safe input monitoring, and three configurable fail-safe outputs triggered by internal fault conditions.

Key Specifications

Pinout & Package

PG-VQFN-48 (7 mm × 7 mm) leadless exposed-pad package with Lead Tip Inspection (LTI) feature for AOI compatibility and thermal performance (R_thJA = 35 K/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar System Basis Chip applications.

Compared with TLE9271QXXUMA2, the TLE9272QXXUMA2 adds one LIN transceiver at identical cost and footprint, while TLE9273QXXUMA2 scales further for multi-subnet gateways-both retain full software compatibility and AEC-Q100 Grade 1 rating.

Availability

TLE9271QXXUMA2 is available at Aetrix Electronics and suitable for body control modules, central gateways, and HVAC ECUs requiring stable component supply across automotive production lifecycles.

Supply support for TLE9271QXXUMA2 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 ICs, and security solutions, with global R&D and manufacturing infrastructure.

The OPTIREG™ SBC family targets automotive electronic control units needing integrated power regulation, CAN FD/LIN connectivity, and functional safety features-designed specifically for AEC-Q100-compliant body, gateway, and comfort applications.

FAQ

What is the maximum ambient temperature for continuous operation?

The TLE9271QXXUMA2 is qualified per AEC-Q100 Grade 1, supporting continuous operation from −40 °C to +125 °C ambient. Thermal design must ensure junction temperature remains ≤150 °C under worst-case power dissipation, aided by the exposed pad's 35 K/W thermal resistance to ambient.

Does the device support partial networking or selective wake-up on CAN FD?

Yes-the CAN FD transceiver supports wake-capable mode with programmable wake pattern detection (e.g., specific ID or data field). It also enables partial networking via SPI-controlled CAN OFF mode, allowing selective node activation without disturbing other bus participants.

How many fail-safe outputs can be simultaneously active?

All three fail-safe outputs (FSO1–FSO3) can be asserted concurrently in Fail-Safe mode. Each is independently configurable via SPI to activate on different fault conditions-including overtemperature, watchdog timeout, or fail-safe input loss-with open-drain outputs rated for 100 mA sink current.

Is external compensation required for the buck regulator?

Yes-the buck regulator requires external compensation components (RC network on COMP pin) and an output LC filter (typically 2.2 µH inductor + 47 µF ceramic capacitor) per datasheet Section 6.2.3. Compensation values depend on input voltage, output load, and desired transient response, with recommended default values provided in the application schematic.