Bq25504
About the Bq25504 PCB
Bq25504 is an open source PCB design by ojousima, published on GitHub under the Custom license license. It is a 2-layer board measuring 35 × 35 mm, with 27 components from 10 distinct parts.
Other key parts include the BQ25504. By type, the board carries 9 resistors, 6 capacitors, 3 connectors, 3 diodes, 1 IC and 1 inductor.
It belongs with the power & battery designs in this gallery.
From the project
My Master's thesis, submitted for review. Submitted version is in commit af3c147e
PCB designs are licensed under CERN OHL 1.2, please see LICENSE.md for details.
My personal favourite piece of work during the thesis was making animations of magnetic fields using a magnetics FEA software FEMM. Lua scripts were used to step parameters of the simulation and exporting images of fields strenghts. Finally convert was used to create animations from the images. for example convert -delay 12 -loop 0 magnet.bmp animated.gif` .
Main components on the Bq25504
Bq25504 bill of materials (BOM)
27 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ25504 | QFN-16-1EP_3x3mm_Pitch0.5mm | U1 |
| 2 | CONN_01X02 | Pin_Header_Straight_1x02 | P1, P2 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x05 | P3 |
| 4 | Mounting_hole | m2.5_mechanical_npth_mount | NC1, NC2, NC3, NC4 |
| 1 | TVS | SOD-323-A | D1 |
| 2 | D_Schottky | SOD-323-A | D2, D3 |
| 1 | INDUCTOR_SMALL | SMD1206_A | L1 |
| 5 | C | SMD0603_A | C1, C2, C3, C4, C6 |
| 1 | EECRG0V155(V|H)N | EECRG0V155HN | C5 |
| 9 | R_Small | SMD0603_A | R1, R2, R3, R4, R5, R6, R7, R8 +1 |
Bq25504 design files
The KiCad project lives in the ojousima/thesis repository on GitHub; these links point at the commit this page was built from.
Bq25504: common questions
How big is the Bq25504 PCB?
The Bq25504 measures 35 × 35 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bq25504?
27 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the Bq25504 design files?
From the ojousima/thesis repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Bq25504 design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
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