USB Power Delivery Analyzer Summary and Resources

Earlier this week we announced the availability of a new product – the USB Power Delivery Analyzer.  With a very competitive price point, this early entrant into the ecosystem is a Type-C connector sniffing dongle, able to act as USB 3.1 Gen 2 data pass through while simultaneously recording traffic on CC1 or CC2.   Your HDMI, DVI, and Thunderbolt traffic are also passed through, giving you the perfect opportunity to view the power negotiation and then watch the screen come to life as soon as the negotiation is complete.

 USB Power Delivery Analyzer

Figure 1: USB Power Delivery Analyzer

Total Phase worked closely with Google to bring this product to life.  Originally part of Google’s Chromium project (code named “Twinkie"), when coupled with the open source PulseView visualization software this matchbox-sized device enables easy monitoring and decoding of CC1/CC2 (configuration channel), while concurrently passing through USB 2.0 and USB 3.1 traffic (up to 10 Gbps).

The power negotiation, including alternate video display modes (VDM) for HDMI, Display Port, and Thunderbolt are monitored on the CC1/CC2 lines and transmitted to the analysis PC via the included USB A to USB Micro-B cable.

The open source PulseView software provides a digital representation of the negotiation between host and source allowing users to decode the BMC and PD packets.

PulseView display of captured power delivery readings

Figure 1: PulseView Software - View of Captured Data

Additionally, the USB Power Delivery Analyzer can be used as a Power Sink displaying different colored-LEDs based on the voltage (5V, 20V and other).

Additional resources that you may find helpful include the following:

If you have questions about our host adapters, protocol analyzers or other Total Phase products, feel free to email us at, or if you already own one of our devices and have a technical question, please submit a request for technical support.

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