Stock problems v1.0 - Githubissues

sinara-hw / Thermostat_EEM

Thermostat with 4 TEC and 8 sensor channels in EEM form factor

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Stock problems v1.0 #48

Closed filipswit closed 2 years ago

filipswit commented 2 years ago

Due to stock problems:

Alternate power supply section has been added.
Indicator leds are 4x green instead of 2x green and 2x red
ARJM11C7-114-BA-EW2 changed to 2337992-8

jordens commented 2 years ago

That's a 6 A limit now. A bit small compared to the 14 A of the MIC. It would be good if we can at least make 8 A, better 12 A (3 A per TEC not including losses). We have a high power 12 V connection that can supply enough. I'd rather not be limited by the 5 V power supply.

filipswit commented 2 years ago

It's hard to find something what is small enough, high current and it's possible to buy in this year.

jordens commented 2 years ago

If this is an emergency alternative, OK. Can we make the boards so that they can be upgraded to the MIC by rework when available?

akaminska commented 2 years ago

@jordens this is only a temporary solution for the purpose of the prototype series, in order to be able to manufacture it now. If you think that it will be really useful, we can try to squeeze in one more 584-LTM4623EV#PBF

filipswit commented 2 years ago

@jordens We treat LTM4623 as temporary solution. MIC section is left as it was, we would like to mount all RC components and as soon as MIC will be available, upgrade will be possible.

jordens commented 2 years ago

@akaminska @filipswit Sounds good! If the plan is to upgrade all boards to the MIC, then this is fine.

filipswit commented 2 years ago

@jordens finally i squeezed there 3rd DC/DC so now we have 3x3A.