NEW VERSION https://www.pcbway.com/project/shareproject/V2_Commodore_AMIGA_USB_C_Power_Sink_Delivery_High_Efficiency_Supply_Triple_Outpu_f8eddd0e.html

Compact design for high efficiency (>90%) USB-C Power Supply for Amiga 500, 600, 1200.

71 x 34 mm, 2 layers, 1.6mm thickness, 1 oz.

Original square DIN 5 male connector should be used to plug to Amiga.

https://www.ebay.com/itm/133282737029

Optional OLED display for monitoring current, voltage and power of the 5V output rail.

The circuit comes with Under-Voltage, Over-Load, Over-Voltage, Short-Circuit, Thermal protections and filters to reduce EMI and ripple noise.

With adequate USB-C power source, it is able to delivery continuously:

+5V: 4.5A (peak 6.5A)

+12V: 0.5A (peak 1.0A)

-12V: -0.1A (peak -0.15A)

Combined power cannot exceed power available from the USB-C (C1 or C2) power source (36W = 12V x 3A on delivery).

https://www.aliexpress.com/item/1005005020515947.html?spm=a2g0o.order_list.order_list_main.33.21ef1802i90Wim

The USB-C cable should withstand 5A and be 50~100cm long (max).

https://www.aliexpress.com/item/1005004959494838.html?spm=a2g0o.order_list.order_list_main.27.21ef1802i90Wim

Firmware (Github): https://github.com/wagiminator/ATtiny814-USB-PD-Adapter

wrote by wagiminator Stefan Wagner

BOM list: https://www.digikey.com/en/mylists/list/OT2Q8I9MLJ

Note: it might be usable with other machines such as ATARI ST models, etc. (-12V no use)

Images: Ian Stedman’s Website, Amiga power supply guide V1.14 May 2021 http://www.ianstedman.co.uk/amiga-power-supply-guide/