2 layers284.7 × 94.2 mm
4 layers100 × 100 mm
ATX PSU Bench Supply
Quphoria/BenchATX1Breakout board for ATX PSU with current sensors
- Size
- 100 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 49
- Pads
- 277
- Tracks, vias
- 584, 638
- Pours
- 30
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 18 Apr 2026
- Updated
- 24 May 2026
Overview
ATX PSU Bench Supply is an open-source printed circuit board by Quphoria, from the Quphoria/BenchATX repository on GitHub. It is a 4-layer board of 100 × 100 mm with 70 parts on 49 nets, routed with 584 tracks and 638 vias.
It is built around the TLV75733PDBV, RP2040-ZERO and 50C02CH-TL-E. Its parts include 21 resistors, 21 connectors, 14 capacitors, 7 ICs and 2 switches. It belongs with the power and sensors and measurement boards and the RP2040 boards of this library.
Main components
3
TLV75733PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1A 3.3V 40uA 46dB@(100kHz) 5.5V 650mV@(1A) 71.5uVrms Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Soft Start SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
RP2040-ZERO
-- Development Boards & Kits ROHSWaveshareDevelopment Boards & Kits
50C02CH-TL-E
CPH-3-55℃~+150℃ 1 NPN 100nA 300 500MHz 500mA 50V 50mV 5V 700mW NPN CPH-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)
README
README.mdBenchATX
Bench power supply using an ATX PSU with current sensors
Possible Improvements
- Move OLED up 2.54mm so 1.3" OLEDs won't obstruct the current shunt voltage headers
- Add solder jumpers to swap OLED GND/VCC
- Add solder jumpers to swap OLED between i2c0 and i2c1
- Add a temperature sensor
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C13, C14 |
| 10 | 10 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R3, R4, R6, R7, R9, R10, R12, R13, R15 |
| 7 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J12, J13, J14, J15, J16, J17, J21 |
| 5 | 0.005 | Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R2, R5, R8, R11, R14 |
| 5 | 4mm Banana Socket R | LIB_24.243.1:24.243.1 | J1, J2, J4, J5, J7 |
| 5 | INA219BIDR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U4, U5, U6 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 1.65k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17, R19 |
| 3 | 4mm Banana Socket B | LIB_24.243.1:24.243.2 | J3, J6, J8 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21 |
| 1 | 3.3k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20 |
| 1 | 50C02CH-TL-E | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | Conn_01x05 | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J19 |
| 1 | Conn_01x07 | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J20 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J18 |
| 1 | Molex 172448-0008 | Connector_Molex:Molex_Mini-Fit_Jr_5569-08A2_2x04_P4.20mm_Horizontal | J10 |
| 1 | Molex 39-30-1240 | Connector_Molex:Molex_Mini-Fit_Jr_5569-24A2_2x12_P4.20mm_Horizontal | J9 |
| 1 | OLED-128x64 | KLEEB_display:OLED-128x64 | J11 |
| 1 | TLV75733PDBV | Package_TO_SOT_SMD:SOT-23-5 | U7 |
| 1 | rp2040-zero | KLEEB_mcu:rp2040-zero-tht | U1 |
Questions
How big is the ATX PSU Bench Supply PCB?
It measures 100 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ATX PSU Bench Supply use?
70 parts, built around the TLV75733PDBV, RP2040-ZERO and 50C02CH-TL-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the ATX PSU Bench Supply KiCad files?
From the Quphoria/BenchATX repository on GitHub, at the commit this page was made from: the board is ATX PSU Bench Supply.kicad_pcb and its schematic ATX PSU Bench Supply.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ATX PSU Bench Supply design in my own project?
Its repository states no licence, so its author keeps all rights: ask Quphoria before reusing the design.
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