Home
Design & development
Reference designs

TIPA-050074

AM261x power-supply design using the TPS653860-Q1 for safety-relevant applications

Design files

TIPA-050074

Design files

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) AM261x Sitara™ microcontroller (MCU).

Features
  • Outlines the power tree design needed to support the AM261x 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
Download View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Design guide — TIPA-050074
PDF | HTML
TIDUFG4.PDF (250 KB)

Reference design overview and verified performance test data

Products

Includes TI products in the design and potential alternatives.

DC/DC converters

TPS62903-Q1 — Automotive, 3-V to 18-V, 3-A low-IQ synchronous buck converter with 165°C junction temperature

Data sheet: PDF | HTML
Multi-channel ICs (PMICs)

TPS653860-Q1 — Automotive 2.3-V to 36-V, 2.8-A power management IC (PMIC) for safety-relevant applications

Data sheet: PDF | HTML
Real-time motor control & automation MCUs

AM2612 — 500MHz dual-core Arm® Cortex®-R5F-based MCU with real-time control, safety and security

Data sheet: PDF | HTML

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Top documentation Type Title Format options Date
* Design guide AM261x Power-Supply Design Using the TPS653860-Q1 for Safety-Relevant Applications PDF | HTML Dec 9, 2025

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support.

Videos
Disclaimer
See the important notice and disclaimer covering reference designs and other TI resources.