Z8F63485983 Lite SBC Family Users Guide About this document The intention of this User s Guide is to provide relevant design-in information for automotive applications with the Infineon Lite SBC family. The document is complementary to the datasheet. Scope and purpose This Users Guide covers the following products of the Lite SBC device family (with/without CAN Partial Networking, with 5 V or 3.3 V, LDO or SMPS main supply output): TLE9461ES TLE9461ESV33 TLE9461-3ES TLE9461-3ESV33 TLE9471ES TLE9471ESV33 TLE9471-3ES TLE9471-3ESV33 Intended audience This document is aimed at hardware engineers integrating devices of the Lite SBC family into their applications. User s Guide Please read the Important Notice and Warnings at the end of this document Rev. 1.0 www.infineon.com 2018-09-28Lite SBC Family Users Guide Table of contents Table of contents About this document . 1 Table of contents . 2 1 Hardware configuration 4 1.1 Introduction and initial setup . 4 1.2 Pin structures . 5 1.3 Response on system failures 6 1.3.1 Loss of system GND 6 1.3.1.1 Scenario 1: Loss of module GND and no connections to external GND . 6 1.3.1.2 Scenario 2: Loss of module GND and connection to external GND via external ESD diode 7 1.3.1.3 Scenario 3: Loss of module GND and connection to external GND via internal ESD diode 8 1.3.1.4 Short-circuit scenarios at the High-Side output (FO/GPIO) . 9 1.3.1.4.1 Scenario 1: KL30 connected, KL31 open, short circuit of HS output to V 9 BAT 1.3.1.4.2 Scenario 2: KL30 connected, KL31 open, short circuit of HS output to GND . 10 1.3.1.4.3 Scenario 3: KL30 open, KL31 connected, short circuit of HS output to V . 11 BAT 1.3.1.4.4 Scenario 4: KL30 open, KL31 connected, short circuit of HS output to GND . 12 1.3.1.4.5 Conclusion 12 1.3.2 Watchdog trigger failure . 13 1.3.2.1 Watchdog trigger failure (CFG STATE=1, CFG=1), Config1 . 13 1.3.2.2 Watchdog trigger failure (CFG STATE=0, CFG=1), Config2 . 13 1.3.2.3 Watchdog trigger failure (CFG STATE=1, CFG=0), Config3 . 13 1.3.2.4 Watchdog trigger failure (CFG STATE=0, CFG=0), Config4 . 14 1.3.3 Behavior in case of VCC1 overvoltage . 15 1.3.3.1 VCC1 overvoltage (CFG0 STATE=1, CFG=0/1), Config1/3 15 1.3.3.2 VCC1 overvoltage (CFG0 STATE=0, CFG=0/1), Config2/4 16 1.3.3.3 VCC1 overvoltage and CFG=0 configuration . 16 1.4 Layout and BOM guidelines . 18 1.4.1 Grounding concept and general layout recommendations 18 1.4.2 EMC considerations . 18 1.4.3 Thermal considerations . 19 1.4.4 ESD considerations . 19 1.5 BOM considerations 19 1.5.1 VS, VCC1, VCC2 . 19 1.5.2 Charge Pump Output (VCP) 20 1.5.2.1 Reverse-Polarity Protection . 20 1.5.2.2 External High-Side Power Switch .20 1.5.3 VSENSE 20 2 Power dissipation and thermal measurements 21 2.1 Junction temperature measurement . 21 2.1.1 Background 21 User s Guide 2 Rev. 1.0 2018-09-28