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4 layers394 × 110 mmGpu cluster backplane, the printed circuit board in 3D

Gpu cluster backplane

antmicro/gpu-cluster-backplane4

This project contains open hardware design files for a PCB supporting power distribution in a cluster composed of GPUs. This board has been derived from an open source d1600e-psu-breakout created by Antmicro.

Size
394 × 110 mm
Copper layers
4
Thickness
1.6 mm
Parts
616
Nets
385
Pads
1,795
Tracks, vias
4,646, 3,885
Pours
71
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
16 Nov 2023
Updated
11 Dec 2025

Overview

Gpu cluster backplane is an open-source printed circuit board by antmicro, from the antmicro/gpu-cluster-backplane repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board of 394 × 110 mm with 616 parts on 385 nets, routed with 4,646 tracks and 3,885 vias.

It is built around the STM32G474CET6, SN74LV1T125DBVR-TP and TMCS1100A2QDRQ1, with the ADS7828E/250, BME280 and FT4232H-56Q-REEL among its other parts. Its parts include 299 resistors, 90 capacitors, 41 diodes, 38 ICs and 30 transistors. It belongs with the STM32 boards of this library.

Main components

12

README

README.md

GPU cluster backplane

Copyright (c) 2023-2024 Antmicro

Overview

This project contains open hardware design files for a PCB supporting power distribution in a cluster composed of GPUs. This board has been derived from an open source d1600e-psu-breakout created by Antmicro. The GPU cluster backplane has been designed to be used with up to eight GPU units connected over a series thunderbolt-gpu-adapters. The design files for the board were prepared in KiCad 7.x.

Key features

  • Power supply distribution between eight expansion slots
  • Built-in circuitry for driving cooling fans for the GPUs

Project structure

The main directory contains KiCad PCB project files, a LICENSE and a README. The remaining files are stored in the following directories:

  • img - contains graphics for this README
  • doc - contains board schematics in PDF format
  • assets - contains visual assets for showcasing this design on Open Hardware Portal

License

This project is published under the Apache-2.0 license.

Parts

616
QtyValueFootprintReferences
102R_0R_0402antmicro-footprints:R_0402_1005MetricR100, R101, R128, R129, R130, R131, R132, R133, R134, R135, R137, R138, R139, R140, R162, R164 +86
76R_10k_0402antmicro-footprints:R_0402_1005MetricR104, R106, R107, R109, R110, R112, R113, R115, R116, R118, R119, R121, R122, R124, R125, R127 +60
61TP_1mm_SMDantmicro-footprints:TP_SMD_1mmTP1, TP2, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23 +45
56C_100n_0402antmicro-footprints:C_0402_1005MetricC21, C24, C33, C34, C35, C36, C37, C38, C40, C100, C101, C102, C103, C104, C105, C106 +40
23R_4k7_0402antmicro-footprints:R_0402_1005MetricR1, R21, R102, R103, R136, R141, R160, R165, R175, R186, R191, R197, R202, R208, R213, R219 +7
17R_100k_0402antmicro-footprints:R_0402_1005MetricR27, R166, R192, R203, R214, R225, R236, R247, R272, R280, R281, R282, R283, R284, R285, R286 +1
16R_2R_0402antmicro-footprints:R_0402_1005MetricR22, R24, R161, R163, R187, R189, R198, R200, R209, R211, R220, R222, R231, R233, R242, R244
16R_51k_0402antmicro-footprints:R_0402_1005MetricR34, R35, R36, R37, R38, R39, R40, R41, R44, R45, R46, R47, R48, R49, R50, R51
16SI7613DN-T1-GE3antmicro-footprints:Vishay_PowerPAK_1212-8_SingleQ2, Q3, Q9, Q10, Q12, Q13, Q15, Q16, Q18, Q19, Q21, Q22, Q24, Q25, Q27, Q28
13BSS138PWantmicro-footprints:SC70-3Q1, Q4, Q5, Q6, Q7, Q8, Q11, Q14, Q17, Q20, Q23, Q26, Q30
12R_5k1_0402antmicro-footprints:R_0402_1005MetricR105, R108, R111, R114, R117, R120, R123, R126, R251, R255, R288, R289
12Spacer_Drill3.7mm_H10mm_9774100151Rantmicro-footprints:Spacer_Drill3.7mm_H10mm_9774100151RH1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12
10LED_G_0603_LG_L29K-G2J1-24-Zantmicro-footprints:LED_0603_1608Metric_GD2, D5, D12, D16, D19, D22, D25, D28, D31, D34
8BZT52C15-7-Fantmicro-footprints:D_SOD-123FD4, D15, D18, D21, D24, D27, D30, D33
8C_10u_16V_0603antmicro-footprints:C_0603_1608MetricC25, C26, C27, C28, C29, C30, C31, C32
8ESD5B5_0ST1Gantmicro-footprints:SOD-523_NPD6, D17, D20, D23, D26, D29, D32, D35
8R_15k_0.1%_0402antmicro-footprints:R_0402_1005MetricR28, R167, R193, R204, R215, R226, R237, R248
8SN74LV1T125DBVRantmicro-footprints:SOT-23-5U33, U34, U35, U36, U37, U38, U39, U40
8Socket_TE_MULTI-BEAM_2x5_1-2212115-4antmicro-footprints:Socket_TE_MULTI-BEAM_2x5_1-2212115-4J1, J10, J11, J12, J13, J14, J15, J16
8TMCS1100A2-Q1antmicro-footprints:SOIC-8_3.9x4.9x1.75mm_P1.27mmU4, U17, U21, U22, U23, U24, U25, U26
6C_2u2_0402antmicro-footprints:C_0402_1005MetricC56, C76, C77, C80, C90, C94
6C_4u7_0402antmicro-footprints:C_0402_1005MetricC57, C63, C64, C72, C79, C81
6ESD9X5.0ST5Gantmicro-footprints:SOD-923D36, D37, D38, D39, D42, D44
6R_100R_0402antmicro-footprints:R_0402_1005MetricR273, R274, R275, R277, R278, R304
51N4148WS-7-Fantmicro-footprints:D_SOD-323D7, D8, D9, D10, D11
5FB_120Z_2A_Murata-BLM18PG_0603antmicro-footprints:FB_0603_1608MetricFB13, FB14, FB15, FB16, FB17
5FB_120Z_3A_Murata-BLM18SG_0603antmicro-footprints:FB_0603_1608MetricFB5, FB6, FB7, FB8, FB9
5Molex_KK_1x4_22-23-2041antmicro-footprints:Conn_Molex_KK_1x4_22-23-2041J3, J4, J5, J6, J23
5TCA9534PWR_TSSOPantmicro-footprints:TSSOP-16_4.4x5mm_P0.65mmU12, U13, U15, U16, U19
4C_22u_16V_0603antmicro-footprints:C_0603_1608MetricC10, C11, C22, C23
4R_1M_0402antmicro-footprints:R_0402_1005MetricR250, R252, R270, R276
4R_470R_0402antmicro-footprints:R_0402_1005MetricR256, R267, R268, R269
4R_510k_0402antmicro-footprints:R_0402_1005MetricR56, R57, R58, R59
4TS5A3359_VSSOPantmicro-footprints:VSSOP-8_2.3x2mm_P0.5mmU7, U8, U9, U10
3TPD2E009_SOT-9X3antmicro-footprints:SOT-723D40, D41, D43
2ADS7828antmicro-footprints:TSSOP-16_4.4x5mm_P0.65mmU18, U20
2AP62301_TSOTantmicro-footprints:TSOT23-6U1, U3
2C_10p_0402antmicro-footprints:C_0402_1005MetricC91, C93
2C_10u_25V_0603antmicro-footprints:C_0603_1608MetricC1, C14
2C_16p_0402antmicro-footprints:C_0402_1005MetricC83, C86
2C_1u_16V_0402antmicro-footprints:C_0402_1005MetricC45, C48
2C_22p_0402antmicro-footprints:C_0402_1005MetricC74, C75
2FB_30Z_8.5A_Murata-BLM21SN_0805antmicro-footprints:FB_0805_2012MetricFB3, FB4
2FB_600Z_0.5A_Murata-BLM18AG_0603antmicro-footprints:FB_0603_1608MetricFB11, FB12
2JST_SH_1x4_SM04B-SRSS-TB-LF-SNantmicro-footprints:Conn_JST_SH_1x4_SM04B-SRSS-TB-LF-SNJ18, J20
2JST_XH_1x2_B2B-XH-A-LF-SNantmicro-footprints:Conn_JST_XH_1x2_B2B-XH-A-LF-SNJ2, J9
2LED_G_0603_KP-1608ZGCantmicro-footprints:LED_0603_1608Metric_GLD1, LD2
2L_3u3_4.1A_WE-LHMI-5030antmicro-footprints:L_WE-LHMI-5030L1, L2
2R_0R_0805antmicro-footprints:R_0805_2012MetricR83, R84
2R_1k_0402antmicro-footprints:R_0402_1005MetricR253, R279
2R_2k_0402antmicro-footprints:R_0402_1005MetricR7, R300
1AP7370-33SA-7antmicro-footprints:SOT-23-3U27
1BAT-HLD-012-SMT-TRantmicro-footprints:BAT_BAT-HLD-012-SMT-TRBAT1
1BC807-25Wantmicro-footprints:SOT-323Q29
1BME280antmicro-footprints:LGA-8_2.5x2.5mm_BME280U31
1ESDA25P35-1U1Mantmicro-footprints:QFN-2L_1.6x1x0.55mmD45
1FT4232H_VQFNantmicro-footprints:QFN-56-1EP_8x8mm_P0.5mmU11
1JST_SH_1x2_BM02B-SRSS-TB-LF-SNantmicro-footprints:Conn_JST_SH_1x2_BM02B-SRSS-TB-LF-SNJ21
1LM339_TSSOP_CUSTOM_Splitantmicro-footprints:TSSOP-14_4.4x5mm_P0.65mmU5
1MAX6643_QSOPantmicro-footprints:QSOP-16_3x4.75x0.75mm_P0.5mmU6
1MB85RC1MTPNF-Gantmicro-footprints:SOP-8_3.9x5.05mm_P1.27mmU29
1MSS3-V-T_Rantmicro-footprints:Switch_Slide_MSS3SW1
1R_10k7_0402antmicro-footprints:R_0402_1005MetricR6
1R_12k_0402antmicro-footprints:R_0402_1005MetricR254
1R_330R_0402antmicro-footprints:R_0402_1005MetricR2
1R_680R_0402antmicro-footprints:R_0402_1005MetricR85
1R_6k34_0402antmicro-footprints:R_0402_1005MetricR299
1Resonator_12MHz_ABM3Bantmicro-footprints:Resonator_SMD_Abracon_ABM3B_5x3.2mmY2
1Resonator_32.768kHz_ECX-31Bantmicro-footprints:Resonator_SMD_ECS_ECX-31B_3.2x1.5x0.9mmY3
1Resonator_8MHz_ABM3Bantmicro-footprints:Resonator_SMD_Abracon_ABM3B_5x3.2mmY4
1SHT45antmicro-footprints:Sensirion_DFN-4-1.5x1.5x0.5mm_P0.8mmU30
1STM32G474CET6antmicro-footprints:LQFP-48_7x7mm_P0.5mmU28
1Si7021antmicro-footprints:DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mmU14
1Socket_Amphenol_HPCE_2x17_10107844-002LFantmicro-footprints:Socket_Amphenol_HPCE_2x17_10107844-002LFJ8
1USB-C_GCT_USB4145-03-0070-Cantmicro-footprints:USB-C_Receptacle_GCT_USB4145-03-0070-CJ17
1antmicro_logoantmicro-footprints:antmicro-logo_scaled_15mmN1
1oshw_logoantmicro-footprints:oshw-logoN2

Questions

How big is the Gpu cluster backplane PCB?

It measures 394 × 110 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Gpu cluster backplane use?

616 parts, built around the STM32G474CET6, SN74LV1T125DBVR-TP, TMCS1100A2QDRQ1 and ADS7828E/250. 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 Gpu cluster backplane KiCad files?

From the antmicro/gpu-cluster-backplane repository on GitHub, at the commit this page was made from: the board is gpu-cluster-backplane.kicad_pcb and its schematic GPU-output.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Gpu cluster backplane design in my own project?

Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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