TLE9471ES | The TLE9471ES is a Lite SBC, designed for various CAN automotive applications as main supply for the MCU and as interface for a CAN bus network.

Overview

The TLE9471ES is a monolithically integrated circuit in an exposed pad PG-TSDSO-24-1 (150 mil) power package. The device is designed for various CAN automotive applications as main supply for the microcontroller and as interface for a CAN bus network. To support these applications, the System Basis Chip (SBC) provides the main functions, such as a 5 V lowdropout voltage regulator (Buck SMPS) for e.g. a microcontroller supply, another 5 V low-dropout voltage regulator with off-board protection for e.g. sensor supply, a HS-CAN transceiver supporting CAN FD for data transmission, a high-voltage GPIO with embedded protective functions and a 16-bit Serial Peripheral Interface (SPI) to control and monitor the device. Also implemented are a configurable timeout / window watchdog circuit with a reset feature, one Fail Output and an undervoltage reset feature. The device offers low-power modes in order to minimize current consumption on applications that are connected permanently to the battery. A wake-up from the low-power mode is possible via a message on the buses, via the bi-level sensitive monitoring/wake-up input as well as via cyclic wake.

Summary of Features

Very low quiescent current consumption in Stop- and Sleep Mode
Periodic Cyclic Sense in SBC Normal-, Stop- and Sleep Mode
Low-Drop Buck DC/DC Voltage Regulator 5 V, 500 mA for main supply with integrated spread spectrum modulation feature for optimum EMC performance
Low-Drop Linear Voltage Regulator 5 V, 100 mA, protected features for off-board usage
High-Speed CAN transceiver supporting FD communication up to 5 Mbit/s according to ISO 11898-2:2016 & SAE J2284
Fully compliant to “Hardware Requirements for LIN, CAN and FlexRay Interfaces in Automotive Applications” Revision 1.3, 2012-05-04
Charge pump-Output for N-channel MOSFET reverse-polarity protection with integrated spread spectrum modulation feature for optimum EMC performance
Universal High-Voltage Wake Input for voltage level monitoring and wake detection
General Purpose High-Voltage In- and Output (GPIO) configurable as Fail Output, Wake Input, Low-Side switch or High-Side switch
High-Voltage Measurement Function as alternate pin assignment
Fail Outputs for Fail-Safe signalization
Configurable wake-up sources
Reset Output & Interrupt Output
Configurable timeout and window watchdog
Overtemperature and short circuit protection feature
Dedicated TEST pin for SBC Development Mode entry (watchdog counter stopped)

Benefits

Software compatible to all SBC families TLE926x and TLE927x
Wide supply input voltage and temperature range
Optimized for Electromagnetic Compatibility (EMC) and low Electromagnetic Emission (EME)
Optimized for high immunity against Electromagnetic Interference (EMI)
AEC Qualified & Green Product (RoHS compliant)

Potential Applications