HardLabs

PowerAmplifier

BlockWorker·ModularAudio·PowerAmplifier/PowerAmplifier.kicad_pcb

PowerAmplifier PCB layout, top view — open source STM32 board by BlockWorker

About the PowerAmplifier PCB

PowerAmplifier is an open source STM32 PCB design by BlockWorker, published on GitHub. It is a 4-layer board measuring 121 × 40 mm, with 152 components from 73 distinct parts.

Its main chip is the STM32F303RDTx, from the STM32 family. Other key parts include the TPA3255, TPS7A2401, TLV4387, INA241A2xDGK and TLV76733DRVx. By type, the board carries 65 capacitors, 45 resistors, 15 connectors, 11 ICs, 9 test points and 4 inductors.

It belongs with the audio designs in this gallery.

From the project

Compact, modular, versatile, hi-fi audio system concept.

Main components on the PowerAmplifier

TPA3255TPS7A2401TLV4387INA241A2xDGKSTM32F303RDTxTLV76733DRVxTPSM861252LP38798

PowerAmplifier bill of materials (BOM)

152 components, 73 distinct parts.

QtyPartRefs
1
TPA3255
U1
1
TPS7A2401
U2
1
TLV4387
U3
4
INA241A2xDGK
U4, U5, U6, U7
1
STM32F303RDTx
U8
1
TLV76733DRVx
U9
1
TPSM861252
U10
1
LP38798
U11
1
12V 6Vstart <100mA
M1
1
A_SE
J1
1
AB_IN
J2
1
AB_BTL
J3
1
B_SE
J4
1
C_SE
J5
1
CD_IN
J6
1
CD_BTL
J7
1
D_SE
J8
1
PVDD
J9
1
AMP
J10
1
OSC
J11
Show 53 more
QtyPartRefs
1
12V
J12
1
VADJ
J13
1
I2C
J14
1
SWD
J15
1
ATS-xPX035035035_NoMounts
HS1
1
10kΩ 3950B
TH1
1
OUT_A
TP1
1
OUT_B
TP2
1
OUT_C
TP3
1
OUT_D
TP4
1
UART_RX
TP5
1
UART_TX
TP6
1
I2C_~{INT}
TP7
1
I2C_SDA
TP8
1
I2C_SCL
TP9
4
10µH
L1, L2, L3, L4
8
220pF C0G
C1, C2, C3, C4, C39, C40, C41, C42
1
470µF 16V
C5
14
0.1µF
C6, C7, C38, C45, C46, C47, C48, C49 +6
4
33nF 100V
C8, C9, C36, C37
4
220nF 100V
C10, C19, C26, C35
4
1µF 100V Film
C11, C16, C27, C32
4
1nF 100V C0G
C12, C17, C28, C33
4
4.7µF
C13, C14, C29, C31
2
1mF 80V
C15, C23
2
4.7µF 100V
C18, C25
2
1µF 100V
C20, C30
5
1µF
C21, C22, C34, C55, C63
1
47nF
C24
3
10µF 25V
C43, C44, C58
1
4.7µF
C50
2
10nF
C56, C65
1
22pF
C59
1
10µF 50V
C60
1
68µF 6.3V
C62
1
10µF 50Vs
C64
4
33kΩ RS
R1, R4, R21, R24
4
10kΩ LN
R2, R3, R22, R23
2
3.3Ω
R5, R19
4
5mΩ 1W
R6, R13, R14, R20
4
2.7kΩ RS
R7, R9, R15, R16
4
1Ω 0.25W
R8, R10, R17, R18
3
30kΩ
R11, R12, R43
1
13kΩ
R25
2
10kΩ
R26, R37
2
0Ω
R27, R28
5
200kΩ 0.1%
R29, R31, R33, R35, R38
5
11kΩ 0.1%
R30, R32, R34, R36, R39
1
330kΩ
R40
1
169kΩ
R41
1
100kΩ
R42
1
26.1kΩ
R44
1
13.3kΩ
R45

PowerAmplifier design files

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

PowerAmplifier: common questions

What microcontroller does the PowerAmplifier use?

The PowerAmplifier is built around the STM32F303RDTx, from the STM32 family.

How big is the PowerAmplifier PCB?

The PowerAmplifier measures 121 × 40 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the PowerAmplifier?

152 components, from 73 distinct parts. The full bill of materials is listed on this page.

Where can I download the PowerAmplifier design files?

From the BlockWorker/ModularAudio repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the PowerAmplifier design in my own project?

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

Can I test firmware for the PowerAmplifier without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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