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TIPA-050072

AM263Px power-supply design using the TPS653860-Q1 for safety-relevant applications

TIPA-050072

Overview

This power design can be used as a guide for integrating the TPS65386x-Q1 Power Management IC (PMIC) into safety-relevant automotive systems powering the functional safety (FuSa) AM263Px Sitara™ processor.

Features
  • Outlines the power tree design needed to support the AM263Px MCU
  • Provides integrated 3.3V and 5V linear regulators
  • Includes buck-boost preregulator stage for external buck converter to power VCORE
  • Provides support for controlling external peripherals through GPIO pins, such as the enable pin of the TPS62903-Q1 buck converter
  • Provides support for watchdog and error signal monitoring (ESM) to help achieve safety requirements
  • Optional integrated linear regulators for powering peripherals such as sensors and interfaces
  • Optional diagnostics pin for internal signal monitoring and redundancy
AC/DC & DC/DC converters (integrated FET)
TPS62903-Q1 — Automotive, 3-V to 18-V, 3-A low-IQ synchronous buck converter with 165°C junction temperature

 

Arm Cortex-R MCUs
AM263P4 — Quad-core Arm® Cortex®-R5F MCU up to 400 MHz with real-time control and expandable memory

 

Multi-channel ICs (PMICs)
TPS653860-Q1 — Automotive 2.3-V to 36-V, 2.8-A power management IC (PMIC) for safety-relevant applications
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Design files

download AM263Px Power-Supply Design Using the TPS653860-Q1 for Safety-Relevant Applications
PDF | HTML
SLAAEF4.PDF (249 KB)

Technical documentation

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Type Title Date
Design guide AM263Px Power-Supply Design Using the TPS653860-Q1 for Safety-Relevant Applications PDF | HTML Nov 19, 2025

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