<![CDATA[Core3 12V]]>I'm just wondering for the CoreS3 how the 9-24V DC circuit fits in. Its mentioned in the specifications, but I can't find it on the schematic. The schematic V1.0 referenced https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/K128 CoreS3/Sch_M5_CoreS3_v1.0.pdf found on https://docs.m5stack.com/en/core/CoreS3
From a low power quiescent current, I'm curious to understand about what the draw is when AXP2101 powered off.

]]>https://community.m5stack.com/topic/5538/core3-12vRSS for NodeSat, 07 Mar 2026 12:33:55 GMTThu, 03 Aug 2023 03:40:41 GMT60<![CDATA[Reply to Core3 12V on Fri, 04 Aug 2023 16:39:00 GMT]]>When it comes to the CoreS3, the 9-24V DC circuit mentioned in the specifications might not be present on the schematic you're looking at.

]]>https://community.m5stack.com/post/21788https://community.m5stack.com/post/21788Fri, 04 Aug 2023 16:39:00 GMT<![CDATA[Reply to Core3 12V on Fri, 04 Aug 2023 03:20:49 GMT]]>@felmue @mtylerjr thanks for the reference. Looks nice the way it plugs together.
I'm looking at the power system for low power sippping as an IoT device, mostly turned off for the ideal in power savings.
The CoreS3 AXP2101 switch off looks excellent for going into low power mode.
Then on the DIN base the SY8303AIC looks like a nice quiescent power supply - though if its interfacing to a 20V solar panel, would be nice to program the MPP power point with a resistor on the EN.
However, seems like low power hasn't extended to the TP4057 LiIon charger - it has two LEDs - seems the RED is on when charging which could be tolerated, and then the GREEN when its charged - which of course is then using Green LED current as quiescent power.
Thanks again for pointing me at the way if fits together :)

]]>https://community.m5stack.com/post/21782https://community.m5stack.com/post/21782Fri, 04 Aug 2023 03:20:49 GMT<![CDATA[Reply to Core3 12V on Thu, 03 Aug 2023 07:24:43 GMT]]>Hello @neilh20

@mtylerjr is correct. The DC/DC converter is in the DIN BASE. See schematic here.

Thanks
Felix

]]>https://community.m5stack.com/post/21771https://community.m5stack.com/post/21771Thu, 03 Aug 2023 07:24:43 GMT<![CDATA[Reply to Core3 12V on Thu, 03 Aug 2023 06:06:08 GMT]]>@neilh20 I think you'll need to look at the DIN-base schematics - thats where the 24v max comes from, the base's own dc converters. And it comes attached with the CoreS3 so the webpage advertising/specifications treat them (understandably) as single unit.

]]>https://community.m5stack.com/post/21769https://community.m5stack.com/post/21769Thu, 03 Aug 2023 06:06:08 GMT