4 layers175 × 125 mm
2 layers60 × 52 mm
ADuM3165 USB ISOLATION
Fominsky/HIGH-SPEED-USB-ISOLATOR4High-speed USB isolator with external power based on ADuM3165/ADuM3166
- Size
- 60 × 52 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 46
- Pads
- 231
- Tracks, vias
- 422, 88
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Dec 2023
- Updated
- 27 Mar 2024
Overview
ADuM3165 USB ISOLATION is an open-source printed circuit board by Fominsky, from the Fominsky/HIGH-SPEED-USB-ISOLATOR repository on GitHub. It is a 2-layer board of 60 × 52 mm with 68 parts on 46 nets, routed with 422 tracks and 88 vias.
It is built around the RFMM-0505S, MCP6004T-E/SL(UMW) and LTV-356T, with the AS2302 among its other parts. Its parts include 25 resistors, 18 capacitors, 6 ICs, 6 diodes and 3 connectors.
Main components
4
RFMM-0505S
SIP,19.5x6mmIsolated Power ModulesYLPTEC
MCP6004T-E/SL(UMW)
SOP-14-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 23mA 28nV/√Hz@1kHz 2uV/℃ 4 4.5mV 600V/ms 76dB Rail-to-Rail Input, Rail-to-Rail Output SOP-14 Operational Amplifier ROHSUMWOperational Amplifier
LTV-356T
SOP-4-2.54mm-55℃~+110℃ 1 1.2V 200mV@1mA,20mA 3.75kV 3us 4us@2mA,100Ω 50% 50mA 50mA 600% 6V 80V DC Phototransistor SOP-4-2.54mm Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output Optoisolators
AS2302
SOT-23-55℃~+150℃ 1 N-channel 1.5V 1W 200pF 20V 3.5A 800pF 80mΩ@2.5V SOT-23 MOSFETs ROHSAnBonMOSFETs
README
README.mdHigh-speed USB isolator based on ADuM3165/ADuM3166
When connecting a USB device to a PC or laptop, there is a risk that the device may be faulty or may fail during operation. This is especially relevant during the development and debugging of devices that connects to your PC.
Connecting a malfunctioning USB device can easily lead to the failure of the USB hub in your PC, and in the case of laptops, the hub is often located on the same substrate as the processor. Thus, there is a risk that if something goes wrong, you will have to replace the processor in your laptop.
A USB isolator will protect your PC from USB-related issues. In the worst-case scenario, the ADuM3165/6 chip itself may fail, but your PC should be fine.
Description
The device has 3 USB ports: Host USB, External Power USB, and Device USB. Host USB is connected to your computer, Device USB is connected to your device that needs to be isolated, and External Power USB is connected to an external power source for powering the device connected to the Device USB port.
The device has its own low-power galvanically isolated DC-DC converter. The DC-DC converter also has converter overload protection. Therefore, the device can be used without external power for communication with low-power devices or devices that have their own power source.
The maximum current of the DC-DC converter is 200 mA. If this value is exceeded, the load is disconnected, and the "Overload" red LED lights up. The load will be disconnected either until the protection is reset by pressing SW1 button (Reset_Button) or until the USB is disconnected from the host USB and reconnected.
To connect more powerful loads, you can use the External Power USB port. It is important to note that this USB is not isolated from the Device USB but is not electrically connected to the Host USB. A good solution would be to connect a power adapter from a mobile device to the external power USB.
When external power is connected, the built-in DC-DC converter is disabled. Note: as I mentioned before, the overload protection only works with the built-in DC-DC converter, so the overload protection is also disabled.
This Repository contains Gerber files, BOM, and step model. All you need to make an isolator.
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C6, C7, C11, C12, C13, C14 |
| 7 | 1k | Resistor_SMD:R_0603_1608Metric | R2, R5, R6, R7, R12, R13, R14 |
| 7 | 5k1 | Resistor_SMD:R_0603_1608Metric | R1, R3, R10, R15, R18, R25, R26 |
| 4 | 12pF | Capacitor_SMD:C_0603_1608Metric | C15, C16, C17, C18 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | 1.8k | Resistor_SMD:R_0603_1608Metric | R4, R11, R23 |
| 3 | 24k | Resistor_SMD:R_0603_1608Metric | R8, R16, R19 |
| 3 | D5V0P4UR6SO-7 | Package_TO_SOT_SMD:SOT-23-6 | U3, U5, U6 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric | R9, R22 |
| 2 | 1 | Resistor_SMD:R_0603_1608Metric | R20, R21 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C4, C9 |
| 2 | 10v 3A | Diode_SMD:D_SOD-323 | D2, D5 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5, C8 |
| 2 | 24MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1, Y2 |
| 2 | 330pF | Capacitor_THT:C_Rect_L10.0mm_W3.0mm_P7.50mm_MKS4 | C3, C10 |
| 2 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1, J2 |
| 1 | 22 uH | Inductor_SMD:L_Taiyo-Yuden_MD-3030 | L1 |
| 1 | 560 | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | ADuM3165 | Package_SO:SSOP-20_5.3x7.2mm_P0.65mm | U4 |
| 1 | AS2302 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Blue | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | Green | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | LTV-356T | Package_SO:SO-4_4.4x3.6mm_P2.54mm | U2 |
| 1 | MCP6004T-E/SL | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | Or | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | RFMM-0505S | User_Lib:RFMM_RFB0505S | DCDC1 |
| 1 | Red | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | Reset_Button | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW1 |
| 1 | USB_A | Connector_USB:USB_A_CONNFLY_DS1095-WNR0 | J3 |
Questions
How big is the ADuM3165 USB ISOLATION PCB?
It measures 60 × 52 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ADuM3165 USB ISOLATION use?
68 parts, built around the RFMM-0505S, MCP6004T-E/SL(UMW), LTV-356T and AS2302. 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 ADuM3165 USB ISOLATION KiCad files?
From the Fominsky/HIGH-SPEED-USB-ISOLATOR repository on GitHub, at the commit this page was made from: the board is ADuM3165_USB_ISOLATION.kicad_pcb and its schematic ADuM3165_USB_ISOLATION.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ADuM3165 USB ISOLATION design in my own project?
Its repository states no licence, so its author keeps all rights: ask Fominsky before reusing the design.
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