HardLabs

BQ25798

zOnlyKroks·pcb-consortium·Psu/BQ25798/BQ25798.kicad_pcb

BQ25798 PCB layout, top view — open source WCH CH32/CH55x board by zOnlyKroks

About the BQ25798 PCB

BQ25798 is an open source WCH CH32/CH55x PCB design by zOnlyKroks, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 75.2 × 35 mm, with 61 components from 32 distinct parts.

Its main chip is the CH552G, from the WCH CH32/CH55x family. Other key parts include the BQ25798 and AMS1117-3.3. By type, the board carries 28 capacitors, 16 resistors, 4 connectors, 3 ICs, 3 transistors and 3 switches.

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

Main components on the BQ25798

BQ25798CH552GAMS1117-3.3

BQ25798 bill of materials (BOM)

61 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ25798
U1
1
CH552G
U2
1
AMS1117-3.3
U3
3
C7499399
NMOS
Q1, Q2, Q3
1
IN
J2
1
UPS
J3
1
BAT
J5
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J6
3
KH-6X6X5H-STM
SW1, SW2, SW3
1
10K
10k
TH1
1
LED
D1
1
C179385
BZX384-B12,115
D2
1
1 uH
L1
1
2.2 uF
C1
4
0.1 uF
C2, C6, C12, C18
4
47 nF
C3, C4, C23, C24
1
4.7 uF
C5
14
10 uF
C7, C8, C9, C10, C11, C13, C14, C15 +6
2
33 uF
C16, C17
2
100NF
100nF
C27, C28
Show 12 more
QtyPartRefs
1
2.2K
2.2k
R1
1
2
R2
1
127K
127k
R3
1
100K
100k
R4
1
6.04K
6.04k
R5
1
294
R6
1
100
R7
1
5.2K
5.2k
R8
1
30.31K
30.31k
R9
2
5.1K
5.1k
R10, R11
3
C17414
10k Ohm
R12, R15, R16
2
22
R13, R14

BQ25798 design files

The KiCad project lives in the zOnlyKroks/pcb-consortium repository on GitHub; these links point at the commit this page was built from.

BQ25798: common questions

What microcontroller does the BQ25798 use?

The BQ25798 is built around the CH552G, from the WCH CH32/CH55x family.

How big is the BQ25798 PCB?

The BQ25798 measures 75.2 × 35 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BQ25798?

61 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the BQ25798 design files?

From the zOnlyKroks/pcb-consortium repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the BQ25798 design in my own project?

Yes, under the terms of its CC0-1.0 license, which zOnlyKroks chose for the repository.

Can I test firmware for the BQ25798 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug WCH CH32/CH55x firmware against it before you order a PCB.

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