Infineon TLE94613ESXUMA1: A Comprehensive Technical Overview

The Infineon TLE94613ESXUMA1 represents a highly integrated, monolithic system basis chip (SBC) meticulously engineered for automotive body control modules and other sophisticated automotive applications. It combines multiple vital functions—power management, communication interfaces, and monitoring features—into a single, compact package, significantly enhancing system reliability while reducing both board space and overall design complexity.

Core Architecture and Power Management

At its heart, the TLE94613ESXUMA1 is built around a high-efficiency switching pre-regulator followed by several linear voltage regulators (LDOs). The primary regulator steps down the harsh automotive battery voltage (capable of handling load dump transients up to 40V) to a stable intermediate voltage. This is then distributed to multiple integrated LDOs, which provide clean, precise, and protected power supplies for a microcontroller (MCU) and other peripheral components. A key feature is the very low quiescent current in standby modes, which is critical for meeting the stringent power consumption requirements of modern vehicles, especially when in a sleep state to prevent battery drain.

Robust Communication Interfaces

A standout feature of this SBC is its integrated high-speed CAN FD (Flexible Data-Rate) transceiver. This interface is compliant with the latest ISO 11898-2:2016 standard, supporting data rates up to 5 Mbit/s. It is designed for exceptional electromagnetic compatibility (EMC) and electrostatic discharge (ESD) protection, ensuring reliable data exchange in the electrically noisy environment of an automobile. Additionally, the chip often includes a local interconnect network (LIN) transceiver, making it a complete communication hub for connecting various electronic control units (ECUs) within the vehicle's network.

Advanced System Control and Safety

The TLE94613ESXUMA1 is designed with functional safety as a paramount concern, supporting the development of systems aiming for ISO 26262 functional safety standards. It includes a wealth of monitoring and protection circuits, such as:

Voltage Monitoring: Continuous supervision of supply voltages and the MCU.

Windowed Watchdog Timer: A configurable watchdog that ensures the microcontroller operates correctly.

Cyclic Redundancy Check (CRC): For monitoring the integrity of the internal memory.

Overtemperature and Overcurrent Protection: Safeguards the chip and the system from damage under fault conditions.

These features make it an ideal companion for safety-critical applications, providing the necessary diagnostics and checks to ensure robust operation.

Application Scope

Its primary application is in central body control modules (BCM), gateways, and sensor integration modules. It is the unseen workhorse that manages power sequencing, communication, and system monitoring for a wide array of functions, including door control, window lifts, lighting, and seat control units.

Packaging and Robustness

Housed in a space-efficient PG-DSO-36 package, the device is engineered for the rigors of the automotive environment. It operates reliably over a wide temperature range (-40°C to 150°C junction temperature) and is qualified according to AEC-Q100 guidelines.

ICGOOODFIND

The Infineon TLE94613ESXUMA1 is a quintessential system basis chip that exemplifies integration and reliability for modern automotive electronics. By consolidating power supplies, communication transceivers (CAN FD and LIN), and comprehensive safety monitoring into a single device, it significantly simplifies system architecture, reduces component count, and accelerates time-to-market for robust automotive designs. Its focus on low quiescent current and functional safety makes it a future-proof solution for next-generation vehicle platforms.

Keywords:

1. Automotive SBC

2. CAN FD Transceiver

3. Power Management

4. Functional Safety (ISO 26262)

5. Low Quiescent Current