Rework of the Powerboard Tyche schematics done and published

As you know, we were having troubles to find a few components in the market, not only because of their availability, but also due to the increased price. After extensive research, the designer replaced the unavailable components. Unfortunately, we were forced to buy a few components with a premium.

Changes:

from TCA6408ARGTR 8-bit translating 1.65- to 5.5-V I2C/SMBus I/O expander to  PCA9539 16-bit I2 C-bus and SMBus low power I/O port with interrupt ( Page 15 pdf schematics)

from TPS56637RPAR Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 6A 10-PowerVFQFN with RT6222DHGJ6F Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 2A SOT-23-6 Thin, TSOT-23-6 ( Page 38 pdf schematics)

We remain stuck with a few overpriced components:

  • Marvell Sata 3 controller  88SE9235A1-NAA2C000
  • TPS544B20RVFT 4.5-V to 18-V, 20-A synchronous SWIFT™ buck converter with PMBus programmability and monitoring

The designer of the PCB should complete the work within the next two weeks and after that we should start producing the prototypes. Meanwhile, we have published the new schematics including the new components in our repo in pdf format and with ORCAD source.

And lastly, our AMD retailer informed us that the new MXM video cards will not be available. There are other manufacturers producing MXM cards based on AMD GPUs, we are evaluating quotes from different producers.

We are still welcome more donations!

Even after completing the current goal, we are leaving the campaign open to help reaching our next milestone.

Our upcoming goals are:

  • to buy a few MXM Video cards for the prototypes. We need new quotes, because AMD has stopped selling MXM cards, so we are already in contact with other manufacturers, next days we order it.
  • to redesign the heat pipes, as they will differ from the original specifications of the Eclipse Notebook.

Only if needed:

  • pay some work on u-boot configuration

Worst case scenario:

  • make a new version of the prototype.
  • any other unforeseen challenges.

We will refine the scope of the upcoming donation campaign once we have a clearer view of the situation as it develops: production of the prototypes, hardware tests, CE certifications. Meanwhile, we will leave our current donation campaign opened.

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