KicadEuroPowerCon

Powerplane for Eurorack Doepfer connectors

Status - Rev B board in prototest - Virtual GND fail

Initial

Stage	Detail	Status
create material	sch/pcb	produced Rev B
	gerber	produced and uploaded RevB
production	ordered	OK
	produced	OK
	delivered	OK

Preliminary validation

Test	Detail	Status
Initial Inspection	Visual - Component Mounting	OK
Initial Technical Test	+-20V in +9V in	OK
	+/-12v out +5V out	OK
	LED's	OK
Initial Product Test	Powercon burn in with 10pin VCF	OK
Initial Product Test	Powercon 16pin	OK
Initial Product Test	Virtual GND	FAIL - see ERRATA - Working after workaround
Initial Product Test	18-24V single ended bypass reg	VCO - OK

Secondary validation

Test	Detail	Status
Product Test	Powercon burn in 10pin	VCF ok
Product Test	Powercon 16pin	VCO ok
Quality	Linear Regulator Noise
Quality	Dual 12v Switched Mode PSU Noise
Quality	Single 30v Switched Mode PSU Linear Regulator Noise
Quality	Single 24v Switched Mode PSU Noise
		Input noise
		GND noise
		Output Noise (no 7812/7912 reg - 0R5 resistor replaced common mode filter)
Long Term Product Test		ongoing

Errata

• Q2 BD140 err in schematic - C and E flipped by mistake
• Q2 Pin 1 and R11 connected to GND by mistake.

Issues and Notes

• fuse holder for +5V should be changed
• virtual GND should be powered behind fuse
• Q2 becomes warm due to higher load on the positive supply when using Virtual GND on single ended supply.

Physical Construction

100x100mm Optional cut in 2 where the top part can be used as a normal regulator board.

Features

+/- 12V Supply

• Requires +-14,5v to +-27v. Input can be either linear transformer with/without bridge rectifier, or switched mode.
• Max 1,5A will require additional cooling of the regulators and larger diodes.
• Optional disable regulation
• Optional synthetic GND if only single ended supply is available.

+5V Supply

• Requires 7-25V input either as linear transformer with/without bridge rectifier, or switched mode PSU.
• Optional input from +15V thru supply
• Max 1,5A will require additional cooling of the regulators and larger diodes.
• Optional disable regulation

Thru

• Both 7V and +-15 input sections can be sent thru to a second module for daisy chaining of modules.

Reg out

• Regulated outputs can be send out to other power distribution modules or directly to Synth modules that does not require the Doepfer 10pin or 16pin power input.

Board Layout

• Top - Power in
• Top Right - Regulated power out
• Bottom - Doepfer Powercon

Electrical Construction

Intended function

Schematic

3D