HardLabs

BQStripped

bootchk·BQStripped

BQStripped PCB layout, top view — open source board by bootchk
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About the BQStripped PCB

BQStripped is an open source PCB design by bootchk, published on GitHub. It is a 2-layer board measuring 9 × 9 mm, with 18 components from 11 distinct parts.

Other key parts include the BQ25504. By type, the board carries 1 IC and 1 inductor.

It belongs with the power & battery designs in this gallery.

From the project

Minimal PCB for TI BQ25504 energy harvester

Stripped means the voltage monitoring and battery management features of the BQ25504 are not used in the normal fashion. Instead, if there is enough energy to harvest, the board charges the power out pins. Voltage out ranges from 0 to >6 volts. Typically used with a solar cell input and a tantalum capacitor output.

See the BQ25504 data sheet and solar example circuits.

Main components on the BQStripped

BQ25504

BQStripped bill of materials (BOM)

18 components, 11 distinct parts.

QtyPartRefs
1
BQ25504
U1
2
0.01uF
Cbyp1, Cref1
2
4.7uF
Chvr1, Cstor1
1
M-
Gnd1
3
CONN_01X01
Gnd2, SC+1, SC-1
3
CONN_01X01
Gnd3, SC+2, SC-2
1
Bat
Out+1
1
M+
Out+2
1
M+
Out+3
2
R
ROC1, ROC2
1
22uH
L1

BQStripped design files

The KiCad project lives in the bootchk/BQStripped repository on GitHub; these links point at the commit this page was built from.

BQStripped: common questions

How big is the BQStripped PCB?

The BQStripped measures 9 × 9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BQStripped?

18 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the BQStripped design files?

From the bootchk/BQStripped repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the BQStripped design in my own project?

The repository has no license, so all rights stay with bootchk. Use it as a reference, and ask the author before reusing the design.

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