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USB Power Injector

by: Nov 04,2022 2339 Views 2 Comments Posted in Engineering Technical

KiCad Power Management Fixtures&Adapters Crowdfunding Project

The USB Power Injector can easily supply power to USB2.0 devices through the lab power supply, connect USB devices to normal lab PSU (Power Supply), and at the same time ensure data communication to a host.

It allows testing the device at different supply voltages or setting current limits (for safety reasons), and easier current draw measurements and consistency during development. This solves the power supply issues of some USB devices very well.

Why is it Important to Measure USB Devices?

When powering a device from a standard USB 2.0 port, whether from a PC or a standard USB hub, you can't be as precise as an adjustable lab power supply. Therefore, you cannot set precise voltage and current limits during development. This can lead to inability to test under/over voltage protection, or even run an excessive current through your device.

USB hubs tend to have overcurrent protection, but most don’t send the overcurrent event to the operating system. That can cause confusion and loss of time for a hardware engineer during development or to testing personnel during production. USB Power Injector can help avoid all the problems.

Features & Specifications

  • Compatible with USB 2.0 standard
  • Peak current rating: 1.5 A
  • Peak voltage rating: 5.5 V

This project is going to crowdfund in CrowdSupply, check here for more info and support it if you are interested:)

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