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saikek
saikek
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I want to create a PCB board that would have:

  • input - 5V wall outlet USB charger or for example MeanWell Din power supply
  • output - 3 usb ports that would be used by RPI-like devices. (5V 2A max each).

Question - since all devices would share same power line and I can expect noise from the consumers - could you please point at extra circuit items that I should use ?

I would imagine that it should contain capacitors from 5V to ground near each output and probably optional input capacitor (not sure if needed with quality power supply's).

And I would also assume that RPI-like devices have already some input filtering in place, so probably it would be overkill.

Also, there would be no data lines included, just the power lines.

I want to create a PCB board that would have:

  • input - 5V wall outlet USB charger or for example MeanWell Din power supply
  • output - 3 usb ports that would be used by RPI-like devices. (5V 2A max each).

Question - since all devices would share same power line and I can expect noise from the consumers - could you please point at extra circuit items that I should use ?

I would imagine that it should contain capacitors from 5V to ground near each output and probably optional input capacitor (not sure if needed with quality power supply's).

Also, there would be no data lines included, just the power lines.

I want to create a PCB board that would have:

  • input - 5V wall outlet USB charger or for example MeanWell Din power supply
  • output - 3 usb ports that would be used by RPI-like devices. (5V 2A max each).

Question - since all devices would share same power line and I can expect noise from the consumers - could you please point at extra circuit items that I should use ?

I would imagine that it should contain capacitors from 5V to ground near each output and probably optional input capacitor (not sure if needed with quality power supply's).

And I would also assume that RPI-like devices have already some input filtering in place, so probably it would be overkill.

Also, there would be no data lines included, just the power lines.

Source Link
saikek
saikek
  • 107
  • 1
  • 5

What should I use to filter noise from 5V power supply with multiple consumers

I want to create a PCB board that would have:

  • input - 5V wall outlet USB charger or for example MeanWell Din power supply
  • output - 3 usb ports that would be used by RPI-like devices. (5V 2A max each).

Question - since all devices would share same power line and I can expect noise from the consumers - could you please point at extra circuit items that I should use ?

I would imagine that it should contain capacitors from 5V to ground near each output and probably optional input capacitor (not sure if needed with quality power supply's).

Also, there would be no data lines included, just the power lines.