4 layers80.5 × 40 mm
PowerAmpSupply
BlockWorker/ModularAudio
Compact, modular, versatile, hi-fi audio system concept.
119 parts2
4 layers121 × 40 mm
PowerAmplifier
BlockWorker/ModularAudio2Compact, modular, versatile, hi-fi audio system concept.
- Size
- 121 × 40 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 156
- Nets
- 122
- Pads
- 501
- Tracks, vias
- 897, 193
- Pours
- 423
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 Jul 2024
- Updated
- 26 Sep 2025
Overview
PowerAmplifier is an open-source printed circuit board by BlockWorker, from the BlockWorker/ModularAudio repository on GitHub. It is a 4-layer board of 121 × 40 mm with 156 parts on 122 nets, routed with 897 tracks and 193 vias.
It is built around the TLV4387PW, TPA3255DDV and TPS7A2401DBV. Its parts include 65 capacitors, 45 resistors, 15 connectors, 11 ICs and 4 inductors. It belongs with the audio and music boards and the STM32 boards of this library.
Main components
3
TLV4387PW
TSSOP-14-2.75V~-850mV、850mV~2.75V -40℃~+125℃ 1.7V~5.5V 10nV/℃ 130dB 15mA 2.8V/us 300pA 5.7MHz 570uA 5uV 700pA 8.5nV/√Hz@1kHz EMI filtering/RF suppression、Zero drift / auto-zero、Built-in compensation Four channels Rail-to-rail input TSSOP-14 Precision Op Amps ROHSTexas InstrumentsPrecision Op Amps
TPA3255DDV
HTSSOP-44-EP-6.1mmAutomatic mute/no-noise switch、Overvoltage protection HTSSOP-44-EP-6.1mm Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
TPS7A2401DBV
SOT-23-5-40℃~+125℃@(Tj) 1 1.24V~17.75V 18V 200mA 250mV@(200mA) 2uA 300uVrms 70dB@(100Hz) Adjustable Over Current Protection、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
156| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 0.1µF | Capacitor_SMD:C_0603_1608Metric | C6, C7, C38, C45, C46, C47, C48, C49, C51, C52, C53, C54, C57, C61 |
| 8 | 220pF C0G | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C39, C40, C41, C42 |
| 5 | 11kΩ 0.1% | Resistor_SMD:R_0603_1608Metric | R30, R32, R34, R36, R39 |
| 5 | 1µF | Capacitor_SMD:C_0603_1608Metric | C21, C22, C34, C55, C63 |
| 5 | 200kΩ 0.1% | Resistor_SMD:R_0603_1608Metric | R29, R31, R33, R35, R38 |
| 4 | 10kΩ LN | Resistor_SMD:R_0603_1608Metric | R2, R3, R22, R23 |
| 4 | 10µH | BW_PassiveMechanical:L_ICE_1D17A | L1, L2, L3, L4 |
| 4 | 1nF 100V C0G | Capacitor_SMD:C_0603_1608Metric | C12, C17, C28, C33 |
| 4 | 1µF 100V Film | Capacitor_THT:C_Rect_L7.0mm_W6.0mm_P5.00mm | C11, C16, C27, C32 |
| 4 | 1Ω 0.25W | Resistor_SMD:R_0603_1608Metric | R8, R10, R17, R18 |
| 4 | 2.7kΩ RS | Resistor_SMD:R_0805_2012Metric | R7, R9, R15, R16 |
| 4 | 220nF 100V | Capacitor_SMD:C_0805_2012Metric | C10, C19, C26, C35 |
| 4 | 33kΩ RS | Resistor_SMD:R_0805_2012Metric | R1, R4, R21, R24 |
| 4 | 33nF 100V | Capacitor_SMD:C_0603_1608Metric | C8, C9, C36, C37 |
| 4 | 4.7µF | Capacitor_THT:C_Rect_L7.2mm_W7.2mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C13, C14, C29, C31 |
| 4 | 5mΩ 1W | Resistor_SMD:R_0612_1632Metric | R6, R13, R14, R20 |
| 4 | INA241A2xDGK | Package_SO:VSSOP-8_3x3mm_P0.65mm | U4, U5, U6, U7 |
| 3 | 10µF 25V | Capacitor_SMD:C_0805_2012Metric | C43, C44, C58 |
| 3 | 30kΩ | Resistor_SMD:R_0603_1608Metric | R11, R12, R43 |
| 2 | 0Ω | Resistor_SMD:R_0603_1608Metric | R27, R28 |
| 2 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R26, R37 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C56, C65 |
| 2 | 1mF 80V | Capacitor_THT:CP_Radial_D16.0mm_P7.50mm | C15, C23 |
| 2 | 1µF 100V | Capacitor_SMD:C_1206_3216Metric | C20, C30 |
| 2 | 3.3Ω | Resistor_SMD:R_0805_2012Metric | R5, R19 |
| 2 | 4.7µF 100V | Capacitor_SMD:C_1206_3216Metric | C18, C25 |
| 1 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R42 |
| 1 | 10kΩ 3950B | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | 10µF 50V | Capacitor_SMD:C_1206_3216Metric | C60 |
| 1 | 10µF 50Vs | Capacitor_SMD:C_0805_2012Metric | C64 |
| 1 | 12V | BW_Connectors:Amphenol_MINITEK_0.8_2P_V_BoardEdge | J12 |
| 1 | 12V 6Vstart <100mA | BW_Connectors:Amphenol_MINITEK_0.8_2P_V | M1 |
| 1 | 13.3kΩ | Resistor_SMD:R_0603_1608Metric | R45 |
| 1 | 13kΩ | Resistor_SMD:R_0603_1608Metric | R25 |
| 1 | 169kΩ | Resistor_SMD:R_0603_1608Metric | R41 |
| 1 | 22pF | Capacitor_SMD:C_0603_1608Metric | C59 |
| 1 | 26.1kΩ | Resistor_SMD:R_0603_1608Metric | R44 |
| 1 | 330kΩ | Resistor_SMD:R_0603_1608Metric | R40 |
| 1 | 4.7µF | Capacitor_SMD:C_0603_1608Metric | C50 |
| 1 | 470µF 16V | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | 47nF | Capacitor_SMD:C_0603_1608Metric | C24 |
| 1 | 68µF 6.3V | Capacitor_SMD:C_1206_3216Metric | C62 |
| 1 | AB_BTL | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J3 |
| 1 | AB_IN | BW_Connectors:Amphenol_MINITEK_0.8_4P_V_BoardEdge | J2 |
| 1 | AMP | BW_Connectors:Amphenol_MINITEK_0.8_4P_V_BoardEdge | J10 |
| 1 | ATS-xPX035035035_NoMounts | BW_PassiveMechanical:ATS-xPX035035035_NoMounts | HS1 |
| 1 | A_SE | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J1 |
| 1 | B_SE | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J4 |
| 1 | CD_BTL | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J7 |
| 1 | CD_IN | BW_Connectors:Amphenol_MINITEK_0.8_4P_V_BoardEdge | J6 |
| 1 | C_SE | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J5 |
| 1 | D_SE | BW_Connectors:TE_MATE-N-LOK_1-770872-x_1x02_P4.14mm_Vertical | J8 |
| 1 | I2C | BW_Connectors:Amphenol_MINITEK_0.8_4P_V_BoardEdge | J14 |
| 1 | I2C_SCL | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP9 |
| 1 | I2C_SDA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP8 |
| 1 | I2C_~{INT} | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP7 |
| 1 | LP38798 | Package_SON:WSON-12-1EP_4x4mm_P0.5mm_EP2.6x3mm | U11 |
| 1 | M1 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | M2 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | OSC | BW_Connectors:Amphenol_MINITEK_0.8_2P_V | J11 |
| 1 | OUT_A | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP1 |
| 1 | OUT_B | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP2 |
| 1 | OUT_C | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP3 |
| 1 | OUT_D | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP4 |
| 1 | PVDD | BW_Connectors:TE_644749-2 | J9 |
| 1 | SLAVE | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | STM32F303RDTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U8 |
| 1 | SWD | Connector_PinSocket_1.27mm:PinSocket_1x05_P1.27mm_Vertical_SMD_Pin1Right | J15 |
| 1 | TLV4387 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U3 |
| 1 | TLV76733DRVx | BW_Active:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_LongerPads | U9 |
| 1 | TPA3255 | BW_Active:HTSSOP-44_6.1x14mm_P0.635mm | U1 |
| 1 | TPS7A2401 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | TPSM861252 | BW_Active:TI_QFN-FCMOD | U10 |
| 1 | UART_RX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP5 |
| 1 | UART_TX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP6 |
| 1 | VADJ | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J13 |
The 155 most common of 156 parts.
Questions
How big is the PowerAmplifier PCB?
It measures 121 × 40 mm and has 4 copper layers, 1.61 mm thick.
What parts does the PowerAmplifier use?
156 parts, built around the TLV4387PW, TPA3255DDV and TPS7A2401DBV. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the PowerAmplifier KiCad files?
From the BlockWorker/ModularAudio repository on GitHub, at the commit this page was made from: the board is PowerAmplifier/PowerAmplifier.kicad_pcb and its schematic 12VLDO/12VLDO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PowerAmplifier design in my own project?
Its repository states no licence, so its author keeps all rights: ask BlockWorker before reusing the design.
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