6 layers122.5 × 103.5 mm
2 layers22.6 × 13.4 mm
Inverter
zivbeh/pcb_inverter1This board uses two compact inverting converters: - One channel generates -5V - One channel generates -15V
- Size
- 22.6 × 13.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 16
- Pads
- 47
- Tracks, vias
- 73, 27
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Feb 2026
- Updated
- 23 Mar 2026
Overview
Inverter is an open-source printed circuit board by zivbeh, from the zivbeh/pcb_inverter repository on GitHub, published under the MIT licence. It is a 2-layer board of 22.6 × 13.4 mm with 16 parts on 16 nets, routed with 73 tracks and 27 vias.
It is built around the LM27761DSG. Its parts include 7 capacitors, 2 resistors and 2 ICs. It belongs with the power boards of this library.
Main components
1README
README.mdConverter Topology
This board uses two compact inverting converters:
- One channel generates -5V
- One channel generates -15V
Each converter requires:
- Proper input decoupling
- Proper flying/switching capacitors
- Proper output capacitors
Final Board Size:
-- 22.6mm x 13.4mm
I/O Pinout
Input (Power In)
- +5V — feeds the -5V converter
- +15V — feeds the -15V converter
- GND — common ground reference
Output (Power Out)
- -5V
- -15V
- GND
Constraints
Electrical
- Inputs: +5V, +15V, GND
- Outputs: -5V, -15V
- Target load: up to ~100 mA
- Goal: stable rails for analog/mixed-signal (low droop, reasonable ripple with proper caps/layout)
- Simple build: minimal parts, easy assembly
Mechanical
- Board size: ≤ 26 mm × 16 mm
- I/O: large pads for power in/out (hand wiring friendly)
Datasheets
-
LTC3261 datasheet (:contentReference[oaicite:0]{index=0}):
https://www.analog.com/media/en/technical-documentation/data-sheets/3261fb.pdf -
LM27761 datasheet (:contentReference[oaicite:1]{index=1}):
https://www.ti.com/lit/ds/symlink/lm27761.pdf
License
Choose one:
- MIT
Credits
Designed for the 3D Ultrasound image reconstruction PCB at the Liwei Lin Lab by Ziv Behar.
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | -5V, -15V, +5V, +15V, GND |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C7 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C6 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 1 | 1.54M | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 2.2uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 500k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | LM27761 | Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm | U1 |
| 1 | LTC3261EMSE_PBF | inverterLTC:MSOP-12_MSE | U2 |
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Questions
How big is the Inverter PCB?
It measures 22.6 × 13.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Inverter use?
16 parts, built around the LM27761DSG. 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 Inverter KiCad files?
From the zivbeh/pcb_inverter repository on GitHub, at the commit this page was made from: the board is inverter/inverter.kicad_pcb and its schematic inverter/inverter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Inverter design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).