Making USB-Powered Hardware Reliable in the Field

Overview

Improving field reliability of USB-powered hardware operating across diverse real-world conditions.

Technologies

USB-C | Power architecture | Embedded systems | Reliability engineering

Define the Problem

A rugged USB-powered device exhibited intermittent resets during field deployment despite functioning correctly in controlled environments.

Diagnose the Root Cause

Variations in USB host implementations and cable behaviour introduced voltage instability under certain conditions.

Key engineering challenges included:

• Host variability

• Cable inconsistencies

• Power transient behaviour

• Field deployment conditions

Deliver the Solution

We redesigned the power architecture and implemented robust power-path management with increased tolerance to supply variation.

Key Outcomes

• Eliminated field resets

• Stable operation across host devices

• Improved deployment reliability

• Increased product robustness