2 layers50 × 30 mm
2 layers64 × 37 mm
Voltlink iso
voltlog/ups-usb10This repo contains the isolated USB board that I designed for a Serioux LD600LI UPS.
- Size
- 64 × 37 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 37
- Pads
- 94
- Tracks, vias
- 139, 29
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 27 May 2025
- Updated
- 28 May 2025
Overview
Voltlink iso is an open-source printed circuit board by voltlog, from the voltlog/ups-usb repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 64 × 37 mm with 30 parts on 37 nets, routed with 139 tracks and 29 vias.
It is built around the CP2102N-A01-GQFN28R, CMT8121W0 and USBLC6-2P6. Its parts include 7 capacitors, 5 resistors, 3 ICs, 2 diodes and 2 connectors.
Main components
3
CP2102N-A01-GQFN28R
QFN-28-EP(5x5)-40℃~+85℃ 13.7mA 195uA 3Mbps 3V~3.6V Transceiver USB 2.0 QFN-28-EP(5x5) USB Converters ROHSSilicon LabsUSB Converters
CMT8121W0
SOIC-8-WBDigital IsolatorsHopeRF Micro-electronics
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
README
README.mdups-usb
This repo contains the isolated USB to serial board that I designed for a Serioux LD600LI UPS to get it to talk reliably with NUT.
Project was designed using Kicad V8. For more information check out Voltlog #503
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C5, C6 |
| 3 | 1K | Resistor_SMD:R_0402_1005Metric | R3, R4, R5 |
| 3 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C1, C4, C7 |
| 1 | 22.1K | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 47.5K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | CMT8121W0 | Package_SO:SOIC-8_7.5x5.85mm_P1.27mm | U1 |
| 1 | CP2102N-A01-GQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U3 |
| 1 | G*** | kibuzzard-67EF8792 | kibuzzard-67EF8792 |
| 1 | G*** | kibuzzard-67EF88A2 | kibuzzard-67EF88A2 |
| 1 | G*** | kibuzzard-67EF8788 | kibuzzard-67EF8788 |
| 1 | G*** | kibuzzard-67EF879C | kibuzzard-67EF879C |
| 1 | G*** | kibuzzard-67EF87AE | kibuzzard-67EF87AE |
| 1 | G*** | kibuzzard-67EF7DB2 | kibuzzard-67EF7DB2 |
| 1 | G*** | kibuzzard-67EF8898 | kibuzzard-67EF8898 |
| 1 | G*** | kibuzzard-67EF7DAE | kibuzzard-67EF7DAE |
| 1 | Mount M4 | Voltlog:M4_TH_terminal | H1 |
| 1 | RX | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | TX | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | UPS | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | USB Type-B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J2 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U2 |
| 1 | VOLTLOG_LOGO | Voltlog:voltlog_silk_5mm | V1 |
The 29 most common of 30 parts.
Questions
How big is the Voltlink iso PCB?
It measures 64 × 37 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Voltlink iso use?
30 parts, built around the CP2102N-A01-GQFN28R, CMT8121W0 and USBLC6-2P6. 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 Voltlink iso KiCad files?
From the voltlog/ups-usb repository on GitHub, at the commit this page was made from: the board is voltlink-iso.kicad_pcb and its schematic voltlink-iso.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Voltlink iso design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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