Kicad qi
About the Kicad qi PCB
Kicad qi is an open source PCB design by olliiiver, published on GitHub under the MIT license. It is a 2-layer board measuring 40 × 20 mm, with 25 components from 15 distinct parts.
Other key parts include the BQ5105xB_QFN. By type, the board carries 11 capacitors, 3 resistors, 1 IC, 1 connector and 1 diode.
It belongs with the iot & wireless and power & battery designs in this gallery.
From the project
Qi module designed in KiCad based on TI bq51013B
This is a "works for me" project. It has not been optimised (foreign object detection, max. output, etc) or tested for (unwanted) electromagnetic radiation.
- BQ51013BRHLR: http://www.ti.com/lit/ds/symlink/bq51013b.pdf - 10 µH 0.15 Ω 3 A Coil (Würth 760308102210): https://www.we-online.de/katalog/datasheet/760308102210.pdf https://www.conrad.de/de/p/wuerth-elektronik-we-wpcc-760308102210-empfaengerspule-qi-kompatibel-wireless-10-h-0-15-3-a-1-1364999.html - All resistors and caps are 0805. Caps from coil to IC need to be min. 50V
Main components on the Kicad qi
Kicad qi bill of materials (BOM)
25 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ5105xB_QFN | bq5105x_PVQFN_N20 | IC1 |
| 1 | PWR | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 2 | 10nf | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Cboot1, Cboot2 |
| 2 | 0.47μF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Cclamp1, Cclamp2 |
| 2 | 22nf | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Ccomm1, Ccomm2 |
| 1 | 196 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Rfod1 |
| 1 | 20k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | Ros1 |
| 1 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 6 | C | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3, C4, C5, C6 |
| 2 | 0.1uF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C7, C11 |
| 1 | 1uF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8 |
| 2 | 10uF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C12, C13 |
| 1 | 66 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | 330 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3 |
Kicad qi design files
The KiCad project lives in the olliiiver/kicad_qi repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/final.kicad_pcb
Kicad qi: common questions
How big is the Kicad qi PCB?
The Kicad qi measures 40 × 20 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Kicad qi?
25 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Kicad qi design files?
From the olliiiver/kicad_qi repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Kicad qi design in my own project?
Yes, under the terms of its MIT license, which olliiiver chose for the repository.
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