DPS5015 32V 7A Power Supply

thingiverse

This is a single output 0-32V 7A compact power supply with the approximate dimensions of 160x145x95mm (length/width/height) and a weight of under 1kg (815g in my case). It uses a cheap, small-sized AC/DC converter I found on [Aliexpress](https://es.aliexpress.com/item/1005003136240720.html) in combination with the popular DPS5015 buck converter. In spite of its compact size, the assembly process and wiring is very easy due to the case design in 3 separate parts (bottom, front and cover). Just as a reference, you can follow the assembly guideline down below. List of parts needed: ================ | Part | Quantity | |-----------------------------------------|----------| | 36V 7A AC/DC converter | 1 | |DPS5015 buck converter | 1 | | IEC320 C14 Inlet power socket with fuse | 1 | | Banana jack (4mm) | 4 | | Rubber feet (20mm square) | 4 | | Red and black 1.5mm2 wire | 0.5m | | Blue and brown 0.75mm2 wire | 0.5m | | Spade connector for power socket | Multiple | | Ring or Fork terminal connector for internal wiring | Multiple | Assembly instructions: ================ -3D print the bottom, front panel, cover,feet supports and component brackets. -Insert the nuts in the component brackets, cover and bottom parts. -Join the brackets with the AC/DC converter and RD5015 buck converter. -Screw these two components to the bottom part of the case. -Mount the banana jacks and DPS5015's display to the front plate (hot glue will be necessary for the latter) . -Partially join the front part to the bottom part of the case. -Wire the inlet power socket and mount it to the case with screws. -Perform the internal wiring (blue and brown cables for the connection between power socket and AC/DC converter input. Red and black cables for the rest) using the appropriate terminal connectors. -Assemble the cover with the bottom and front parts and fasten all the case screws. Screws: --------------------- | Size | Type | Quantity | |---------|-------------|:--------:| | M3x8mm | Flat head | 2 | | M3x8mm | Socket head | 12 | | M4x8mm | Socket head | 4 | | M4x10mm | Flat head | 4 | | M4x16mm | Flat head | 2 | Nuts: --------------------- | Size | Type | Quantity | |------|------|----------| | M3 | Hex | 14 | | M4 | Hex | 12 | Notes: ================ I haven't really fully tested the power supply, so I'm unsure whether the AC/DC converter is capable of delivering the advertised 7A of current. I also don't know if the power supply actually can get away without an internal fan. I designed some internal ventilation openings at the back and bottom, though. Also, even with the rubber feet, the power supply is too light to operate with a single hand. Finally, the AC/DC converter outputs about 35.5V so the maximum output voltage you'll get is around 34.5V, not 32V.