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I have 2 pins that are named the same (VOUT), and are both configured as outputs in the symbol.

I get the ERC error:

Error: Pins of type Output and Output are connected Symbol U1 Pin C1 [VOUT, Output, Line] Symbol U1 Pin D1 [VOUT, Output, Line]

How do I tell KiCAD that these are the same, internally connected pins? Or is my symbol wrong? I am using KiCAD 9.0.2.

Here is my schematic and symbol:

1 2

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    \$\begingroup\$ Should they be defined as power inputs rather than outputs? \$\endgroup\$ Commented Oct 4 at 6:16
  • \$\begingroup\$ @Frog Ok, I read more on GND being defined as power input, changed it and I think I understand. But an even more weird problem is that I'm getting the same error for VOUT. I'll change the question to reflect that question instead as it makes more sense. \$\endgroup\$ Commented Oct 4 at 6:38
  • \$\begingroup\$ You could mark one of the outputs as passive or input. The ERC/DRC errors will not prevent KiCad from producing the necessary files to make a PCB, so you can just ignore and error if you know the thing it is flagging is really what you want to do. Preferably, you shouldl clear all ERC and DRC errors, but sometimes, as in this case, perfectly valid things are marked as errors. \$\endgroup\$ Commented Oct 4 at 6:52
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    \$\begingroup\$ @luek in case there’s any misunderstanding, power output pins are from a battery, voltage regulator etc and the VCC and GND pins on a micro will be power inputs - this is in terms of power/energy as distinct from current, where VCC is typically a current sink and GND a current source. \$\endgroup\$ Commented Oct 4 at 9:19

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Each net can have only one power-output which supplies power to other devices.

All pins which consume power should be configured as power input (VIN, GND, PVIN, PGND, etc).

Update:

Follow the KiCad rules for Connecting Multiple (Power) Output Pins:

https://forum.kicad.info/t/electrical-type-of-schematic-symbol-pins-kicad-4-and-kicad-5/9439

"If you have multiple output pins or power output pins that need to be connected in parallel then you have a choice to make. Let ERC complain about connecting multiple power output pins or give only one of these pins the type output. (The other pins would get the type passive in the later case.)

Such a configuration benefits greatly from being stacked. (all pins on top of each other with all but one pin set to invisible. Make sure the visible pin is the one with the correct electrical type.) The reason being is that if they are not stacked then it would be possible to connect one of the pins marked as non output to something where ERC would otherwise complain. Stacking ensures that this can not happen."

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  • \$\begingroup\$ Thanks, I went with stacking the pins. It would be great if you could just assign a single symbol pin to multiple physical pins like if VOUT had pin numbers C1 and D1. \$\endgroup\$ Commented Oct 4 at 8:35

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