SPEC7 issueshttps://ohwr.org/project/spec7/issues2023-07-03T15:02:19Zhttps://ohwr.org/project/spec7/issues/33Remove R1372023-07-03T15:02:19ZPeter JansweijerRemove R1373V3_EN signal (= N6 Power OK) is pulled up by 10K (R372) to 3v3_NSW. However, it is also pulled down by 10K (R137) creating a marginal signal definition of 1V65 (that worked for SPEC7v2 due to resistor and threshold tolerances).Peter JansweijerPeter Jansweijerhttps://ohwr.org/project/spec7/issues/31Intel discontinuation of DC/DC convertors2021-09-29T08:39:48ZPeter JansweijerIntel discontinuation of DC/DC convertors[Intel decision to exit the Enpirion power business](https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/pcn/pdn2133.pdf) leads to discontinuation of DC/DC convertors EN29A0QI (N2) and EN6347QA (N3, N4, N5, N6).
Last order March 18, 2022https://ohwr.org/project/spec7/issues/30PCB stackup GND2 => 2V52021-09-29T08:29:29ZPeter JansweijerPCB stackup GND2 => 2V5https://ohwr.org/project/spec7/issues/29D72 and D74 (near PLL LTC6950) not visible under custom heatsink.2021-08-19T12:24:51ZPeter JansweijerD72 and D74 (near PLL LTC6950) not visible under custom heatsink.https://ohwr.org/project/spec7/issues/17LTC6950 dissipation2021-01-20T15:14:20ZPeter JansweijerLTC6950 dissipationU66 (LTC6950) is thermally conducting to the ground plane of the PCB. However the ground plane under the PLL section has a cut out that is placed there deliberately to create an "island of silence". Therefore the ground plane under the LTC6950 is of limited size and the package heats up.
Consider placing a small heat sink on the package.