HardLabs

BalthazarPSU

Turbosavski·balthazarPSU

BalthazarPSU PCB layout, top view — open source board by Turbosavski

About the BalthazarPSU PCB

BalthazarPSU is an open source PCB design by Turbosavski, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 83.8 × 31.8 mm, with 85 components from 33 distinct parts.

Other key parts include the BQ24193, PAM8403-SOP16 and TPS63020. By type, the board carries 26 resistors, 10 capacitors, 7 connectors, 6 diodes, 4 ICs and 3 inductors.

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

From the project

Balthazar open-hardware laptop - PSU charger + audio amplifier module

These are electronic schematic modules as presented at https://balthazar.space/wiki/Balthazar with the main aim for team access

module BalthazarPSU is a combined 1S battery charger, double buck-boost converter, stereo power amplifier and usb2.0 hub.

Main components on the BalthazarPSU

BQ24193PAM8403-SOP16TPS63020

BalthazarPSU bill of materials (BOM)

85 components, 33 distinct parts.

QtyPartRefs
1
BQ24193
IC1
1
PAM8403-SOP16
U1
2
TPS63020
U2, U3
1
AudioIN
J1
1
AudioOUT
J4
1
USB_A_female
J5
1
USB_OTG_female
J6
1
host (promicro)
J7
2
3.3V 4A
J8, J9
1
1s LiPo
BATT1
6
10uF
CBAT1, CPMID1, CSYS1, CSYS2, CSYS3, CSYS4
10
1uF
CBTST1, CBUS1, CBUS2, CBUS3, CBUS4, CBUS5, CBUS8, CPSU1 +2
4
0.1uF
CBUS3a1, CBUS3a2, CBUS3a3, CPMID1a1
1
0.1uF
CBUS7
2
10E
FBEAD2, FBEAD3
1
3.9 - 17V adapter 3-5A
PSU1
1
R
RBTST1
2
SW_SPST
SW2, SW3
1
10K
THERMISTOR(103-AT)1
4
Led
D1, D2, D4, D5
Show 13 more
QtyPartRefs
2
RBR5LAM40A
D3, D6
1
2.2uH 4A
L1
2
1.5uH 4A
L2, L3
2
0.1uF
C1, C2
8
22uF
C3, C4, C5, C6, C7, C8, C9, C10
7
10K
R1, R2, R3, R6, R16, R17, R18
7
2K2
R4, R5, R8, R9, R11, R21, R22
1
265
R7
1
6K8
R10
4
1M
R12, R14, R23, R24
2
180K
R13, R15
2
0
R19, R20
2
270K
R25, R26

BalthazarPSU design files

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

BalthazarPSU: common questions

How big is the BalthazarPSU PCB?

The BalthazarPSU measures 83.8 × 31.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BalthazarPSU?

85 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the BalthazarPSU design files?

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

Can I use the BalthazarPSU design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Turbosavski chose for the repository.

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