Speaking of the switchers, these new switchers, will they tolerate 24 Volts or instantly smoke?
On my very first power up of my existing EC32MB I poked it with 24 Volt supply in. It didn't complain! Well, no smoke at least. I see that as a very good ability since 24 Volts is a normal supply voltage I use lots.
@evanh said:
Speaking of the switchers, these new switchers, will they tolerate 24 Volts or instantly smoke?
On my very first power up of my existing EC32MB I poked it with 24 Volt supply in. It didn't complain! Well, no smoke at least. I see that as a very good ability since 24 Volts is a normal supply voltage I use lots.
Good chance they'll tolerate for a few moments, although that's out of spec for the previous and new part. As I recall 20V is abs max.
Cool. It was a total stab at the time. In hindsight, I'm now guessing the newer switchers are missing the "Power Good" outputs that the older ones had.
I really appreciate that Evan, but I’m in Texas, so I think it needs to go elsewhere. Since you are the winner, want to pick again? Lotsa good Parallaxians in the EU!
Yes, of course. I am experimenting with PSRAM stuff so having the "real thing" instead of home made 4bit contraption will help a lot
I sent the mail address via the forum message system
VonSzarvas
Posts: 3,489
Comments
Sweet!
The big change is the switchmode ICs, notably less pins. Inductors changed too - Bigger? EEPROM is rotated and a new three legged part just above it.
Switchers are 3 Amp now. Bit more juice for high speed mayhem.
COMPETITION TIME !
First person with a EU delivery address to guess that part can get a test module from me when I'm done with them!
Speaking of the switchers, these new switchers, will they tolerate 24 Volts or instantly smoke?
On my very first power up of my existing EC32MB I poked it with 24 Volt supply in. It didn't complain! Well, no smoke at least.
I see that as a very good ability since 24 Volts is a normal supply voltage I use lots.
Hmm, transistor to toggle power for SD or Flash?
Not that I need one...
Good chance they'll tolerate for a few moments, although that's out of spec for the previous and new part. As I recall 20V is abs max.
Not SD related.
P38/39 LED control transistor?
I'll take a stab at brownout reset. Prop2 doesn't have that built in.
Perhaps a little clue would help... hmm.... ain?
temp sensor (and if I'm correct send it to pik33)
??? Power Mosfet (has a "drAIN")
Any more guesses before we find a winner ? Saturday feels like a good day to let the cat out the bag !
Perhaps that last clue was too cryptic. tan?
STM1061 voltage supervisor circuit, 1.6V Active Low, Open Drain.
Datasheet: https://www.mouser.com/datasheet/2/389/cd00065467-1796630.pdf
(By sheer, dumb luck I have that same part in a BOM for something I have on the bench right now)
EDIT: Evan beat me to it! lol.
Voltage reference source?
Yes, Evan did! We have a winner !!
@evanh ... Do you have an EU address, or would you like to nominate someone else? Please PM the details.
Cool. It was a total stab at the time. In hindsight, I'm now guessing the newer switchers are missing the "Power Good" outputs that the older ones had.
Mr Roark can have it. I'm down in New Zealand.
I really appreciate that Evan, but I’m in Texas, so I think it needs to go elsewhere. Since you are the winner, want to pick again? Lotsa good Parallaxians in the EU!
Oh, lol. Voltage ref is next closest guess then. Pik, you're it.
@VonSzarvas Out of curiosity, did I correctly identify that component?
Spot on !
STM1061N16WX6F
It also appeared on the first P2-EVAL #64000 boards.
Hi @pik33
If you'd like the module, please PM me your shipping details.
Yes, of course. I am experimenting with PSRAM stuff so having the "real thing" instead of home made 4bit contraption will help a lot
I sent the mail address via the forum message system