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3v3-charger psu

jvanderberg·3v3-charger-psu

3v3-charger psu PCB layout, top view — open source board by jvanderberg

About the 3v3-charger psu PCB

3v3-charger psu is an open source PCB design by jvanderberg, published on GitHub. It is a 4-layer board measuring 44.3 × 31 mm, with 63 components from 37 distinct parts.

Other key parts include the BQ25185DLHR, TPS63070RNMR and DW01A_C351410. By type, the board carries 20 capacitors, 18 resistors, 9 connectors, 4 ICs, 4 test points and 3 diodes.

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

From the project

USB-C 1S Li-ion charger and dual 3.3V/5V power module for embedded projects

The 3V3 Charger PSU is a compact internal power module for portable hobbyist electronics, combining USB-C charging, power-path management, and protection for a single 4.2 V Li-ion or LiPo battery. It provides independently controlled, always-regulated 3.3 V and 5 V outputs for microcontrollers, sensors, displays, radios, and other peripherals, with power-good signals, USB and battery monitoring, optional cell-temperature sensing, and low-power shutdown. The board is designed to mount inside a project with an enclosure-mounted USB-C connector and soldered or project-specific battery wiring…

3v3-charger psu, from the project README
From the project README

Main components on the 3v3-charger psu

BQ25185DLHRTPS63070RNMRDW01A_C351410

3v3-charger psu bill of materials (BOM)

63 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ25185DLHR
TI
U1
2
TPS63070RNMR
Texas Instruments
U2, U3
1
DW01A_C351410
PUOLOP
U4
1
FS8205A_C908265
FUXINSEMI
Q1
1
C57369
Breakout
BOOMELE
J1
1
VBUS
J2
3
GND
J3, J7, J9
1
B+
J4
1
B-
J5
1
3V3+
J6
1
5V+
J8
1
RATE_1A
JP1
1
NTC_EMU
JP2
1
CC1
TP1
1
CC2
TP2
1
NTC
TP3
1
NTC_GND
TP4
1
C111340
CHG
KENTO
D1
1
C2286
FAULT
KENTO
D2
1
SMF5.0A
MDD
D3
Show 17 more
QtyPartRefs
2
C3033018
1.5uH XFL4020
Coilcraft
L1, L2
6
C96446
10uF 25V
SAMSUNG
C1, C2, C7, C11, C15, C19
1
1UF
1uF
SAMSUNG
C3
3
100NF
100nF
YAGEO
C4, C12, C20
10
22UF
22uF
FH
C5, C6, C8, C9, C10, C13, C14, C16 +2
2
560R
UNI-ROYAL
R1, R2
1
13K
13k
UNI-ROYAL
R3
3
10K
10k
UNI-ROYAL
R4, R17, R18
2
1k
UNI-ROYAL
R5, R6
2
5.1K
5.1k
UNI-ROYAL
R7, R8
1
100R
UNI-ROYAL
R9
1
470K
470k
UNI-ROYAL
R10
1
150K
150k
UNI-ROYAL
R11
2
1M
UNI-ROYAL
R12, R15
1
330K
330k
UNI-ROYAL(Uniroyal Elec)
R13
1
100K
100k
UNI-ROYAL
R14
1
200K
200k
UNI-ROYAL(Uniroyal Elec)
R16

3v3-charger psu design files

The KiCad project lives in the jvanderberg/3v3-charger-psu repository on GitHub; these links point at the commit this page was built from.

3v3-charger psu: common questions

How big is the 3v3-charger psu PCB?

The 3v3-charger psu measures 44.3 × 31 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 3v3-charger psu?

63 components, from 37 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 3v3-charger psu design files?

From the jvanderberg/3v3-charger-psu 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 3v3-charger psu design in my own project?

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

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