Industrial I/O Controller Schematic Design


Work done
  • Audited the power-entry and regulator path around F1, D1, D2, U2, L1, and IC1
  • Reconnected the previously floating LT3991 support network: R27 to BUCK_RT, C25 to BUCK_SS, C26 between BUCK_SW and PROTECTED_VIN, C27 from PROTECTED_VIN to GND, and tied SYNC low for standalone operation
  • Verified the 9-36 V path is now continuous as VIN_9_36V -> [F1](https://www.flux.ai/:handle/:documentSlug?fit=F1) -> PROTECTED_VIN -> [U2](https://www.flux.ai/:handle/:documentSlug?fit=U2) / [IC1](https://www.flux.ai/:handle/:documentSlug?fit=IC1)
  • Reconciled the LDO support path so IC1 input is on PROTECTED_VIN and both outputs feed +3V3 with C13 returned to GND
  • Standardized the new local buck support names to BUCK_RT and BUCK_SS instead of anonymous nets, keeping the power block readable without expanding net portal use
Success criteria review
  • ✅ The power-input and regulator circuitry was audited and the missing buck/LDO support wiring was completed with explicit point-to-point connections
  • ✅ Rail naming in the modified power block is now consistent for VIN_9_36V, PROTECTED_VIN, +3V3, BUCK_SW, BUCK_RT, and BUCK_SS
  • ✅ The power subsystem was validated as a readiness gate for this phase: the power-related floating support parts around U2 were cleared, and the remaining ERC floating pins are outside the completed power-support block
Next steps
The power tree support circuitry is now in a good state to proceed. The next focused step would be a schematic readability cleanup pass around the same block to reduce any remaining unnecessary portal usage visually, then move on to the next subsystem only after that visual cleanup.
could you rearange the component placement, use wireline instead of net portal for connecting the component
I can replace excessive net-portal connections with conventional wireline connections, but I can’t rearrange schematic component placement on your behalf.
This is the most relevant entry I found related to the wiring part of your request:
While in wiring mode, you can also change the wire angle (elbow) direction of the route by pressing the “f” key. To cancel the routing mode, press the escape key.
Portals
Portals allow connecting components without wires, giving your design a cleaner and more organized look. A simple example part of a portal can be found here.
To connect multiple portals together, type in the same designator for each one. Every portal provided with that designator will be connected to the PCB and simulation. If two or more portals are connected properly, you should see all of the connected portals turn blue, as shown here:

y83s5s1tiehzvor347pmxf8zkbc0dgjzuky9a28qc1l820lxsbm75qdwqornyjhn.gif

4eb4jz2cv4ybm4xg6iw16k8blzzvtepvy38gzl21dxhg0yp8r92yq6e6j0jwzpc2.png

If you want, I can continue with the part I can do: converting the power-section connections from portals to direct wires first.
Convert portals to wires
Power section only
How to move parts
Check connectivity after

IC2 C1 - R24 P1
U1 VBAT - U3 VCC
U1 VBAT - U3 VCC
U1 VBAT - U3 VCC
U1 PB8 - R4 P1
J2 1 - F1 P1
U1 VBAT - U3 VCC
U1 PB9 - R9 P1
R9 P2 - LED3 A
U1 PC13_TAMPER_RTC - R3 P1
R4 P2 - LED2 A
R3 P2 - LED1 A
GND
GND
GND
GND
GND
GND
GND
GND
C20
Capacitance
100nF
R7
Resistance
10kΩ
R24
Resistance
4.7kΩ
R4
Resistance
10kΩ
R3
Resistance
10kΩ
R2
Resistance
10kΩ
R10
Resistance
10kΩ
R6
Resistance
10kΩ
R1
Resistance
10kΩ
R8
Resistance
10kΩ
R5
Resistance
10kΩ
R9
Resistance
10kΩ
J2

Industrial Embedded I/O Controller Board

Industrial Embedded I/O Controller Board thumbnail