2 layers112.5 × 112.5 mm Qc3-adapter panel, the printed circuit board in 3D

Qc3-adapter panel

QC3.0 to 3.6-20V DC Adapter

Size: 112.5 × 112.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 46
Nets: 10
Pads: 140
Tracks, vias: 190, 10
Pours: 4
Routed: Yes
KiCad: KiCad 4
Created: 30 Aug 2019
Updated: 30 Aug 2019

Overview

Qc3-adapter panel is an open-source printed circuit board by tai, from the tai/qc3-adapter repository on GitHub. It is a 2-layer board of 112.5 × 112.5 mm with 46 parts on 10 nets, routed with 190 tracks and 10 vias.

It is built around the LM317 and TL431. Its parts include 20 resistors, 6 connectors, 6 switches, 4 ICs and 2 diodes. It belongs with the interfaces and adapters boards of this library.

Main components

README

README.md

QC3.0 to 3.6-20V DC adapter

This adapter controls USB QC3.0 adapters/batteries to generate DC output of 3.6-20V. Actual output voltage range depends on capability of power source, and it seems most supports 3.6-12V range.

Unlike USB-PD, QC3.0 power source is quite easy to control. All you need is to control USB D+/D- lines to appropriate level, and send a pulse to raise/lower the output voltage.

Note on KiCad

Although KiCad v5 is out, this design uses KiCad v4. KiCad v5 seems to have a library loading issue that stalls whenever I try to load parts model/footprint. This is really a deal breaker.

Note on JLCPCB

I'm using JLCPCB to manifacture the board.

To submit the order to JLCPCB, follow the instruction in the page below:

How to export Kicad PCB to gerber files

https://support.jlcpcb.com/article/44-how-to-export-kicad-pcb-to-gerber-files

PCB Panelization

https://support.jlcpcb.com/article/49-pcb-panelization

Category and platform

Interfaces and adapters

Project files

Show this board on your page

https://pcbkit.io/boards/tai/qc3-adapter

The board's own page, for a message or a post.

Source

Repository: tai/qc3-adapter
Board file: panel/qc3-adapter-panel.kicad_pcb
Commit: 1680843
Licence: Not stated

Parts

Qty	Value	Footprint	References
8	M3	MountingHole:MountingHole_3.2mm_M3	MH1, MH1, MH2, MH2, MH3, MH3, MH4, MH4
6	10K	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R3, R3, R8, R8, R9, R9
4	3.3K	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2, R2, R10, R10
4	330	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4, R4, R7, R7
4	LM317	TO_SOT_Packages_THT:TO-92_Inline_Narrow_Oval	U1, U1, U2, U2
2	100	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1, R1
2	1K	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R5, R5
2	220	Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R6, R6
2	DOWN	Buttons_Switches_THT:SW_Tactile_Straight_KSA0Axx1LFTR	SW1, SW1
2	INIT	Buttons_Switches_THT:SW_Tactile_Straight_KSA0Axx1LFTR	SW3, SW3
2	POWER_OUT	Pin_Headers:Pin_Header_Straight_2x06_Pitch2.54mm	J3, J3
2	TL431	TO_SOT_Packages_THT:TO-92_Inline_Narrow_Oval	D1, D1
2	UP	Buttons_Switches_THT:SW_Tactile_Straight_KSA0Axx1LFTR	SW2, SW2
2	USB_ALT	Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm	J2, J2
2	USB_OTG	Connectors:USB_Micro-B	J1, J1

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Questions

How big is the Qc3-adapter panel PCB?

It measures 112.5 × 112.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Qc3-adapter panel use?

46 parts, built around the LM317 and TL431. 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 Qc3-adapter panel KiCad files?

From the tai/qc3-adapter repository on GitHub, at the commit this page was made from: the board is panel/qc3-adapter-panel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Qc3-adapter panel design in my own project?

Its repository states no licence, so its author keeps all rights: ask tai before reusing the design.