run PI sim - Githubissues

sinara-hw / Pounder

PDH/phase lock signal generator for Stabilizer

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run PI sim #63

Closed hartytp closed 4 years ago

hartytp commented 4 years ago

(if only to check power margin on LDOs etc)

gkasprow commented 4 years ago

Setting up the PI analysis takes a few hours of work so I do it only for complex circuits or critical rails. Here, we are copying power supply from already tested designs. I don't think it is necessary in this case.

hartytp commented 4 years ago

Ok fair enough

Please can you

[x] add a power budget to the schematic
[x] confirm that no rail exceeds its max current

Then we can close

hartytp commented 4 years ago

The power budget says that the 5V0A rail can draw up to 145mA, but the LT1761 is only a 100mA regulator...replace with a 3045 (thereby removing a BOM line)?

hartytp commented 4 years ago

All other rails look fine (we're generally using 3A LDOs for rails drawing 100mA or so!).

hartytp commented 4 years ago

NB if we add a new pre-amp we'll need to check the power budget on that rail...

gkasprow commented 4 years ago

good catch. Fixed obraz

hartytp commented 4 years ago

Did you mean to connect pins 1 and 2?

gkasprow commented 4 years ago

I did it already.