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6 layers50 × 35 mmH750xb core, the printed circuit board in 3D

This is a mcu core pcb project.

Size
50 × 35 mm
Copper layers
6
Thickness
1.56 mm
Parts
93
Nets
205
Pads
844
Tracks, vias
3,048, 377
Pours
15
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
10 Jun 2024
Updated
5 Aug 2024

Overview

H750xb core is an open-source printed circuit board by KotoriProject, from the KotoriProject/STM32H750XB_Core repository on GitHub. It is a 6-layer board of 50 × 35 mm with 93 parts on 205 nets, routed with 3,048 tracks and 377 vias.

It is built around the TPS82130SIL, W25Q32JVZPIQ and TPS74801DRC, with the BAT54C among its other parts. Its parts include 67 capacitors, 9 resistors, 7 ICs, 2 connectors and 2 crystals. It belongs with the STM32 boards of this library.

Main components

4

README

README.md

STM32 H750XBH6 核心板设计规划

设计理念

从STM32的F0、F1系列一路至今,到目前最为复杂的H750IBK6开发板、核心板的设计,逐渐认识到了单片机系统的设计思路。

在使用低性能单片机的情况下,通常最小系统的PCB layout只需要普通的两层即可。因此,在这种情况下,应当尽量采用一体化设计,既可以节省PCB成本,又无需考虑多个PCB之间的耦合设计。

但如果使用的是像H7这一类的高性能芯片,并且,这些芯片因为其封装、外部扩展ram等等,会导致最小系统的复杂度急剧提升,PCB layout通常都需要4层甚至以上的设计,此时,如果还像低性能单片机一样一体化设计,将核心系统和外围系统设计到一个PCB上,不仅会无故增加成本,并且每一个不同的项目需求的外围电路不尽相同,若更改外围电路则需要连同核心系统一起更改,将会花费大量时间在重复设计核心系统上。

因此,采用核心板+底板的设计方式应运而生。通过将核心系统单独设计成一块固定的PCB,并通过引出具有通用性的接口,可以使得核心系统随意搭配不同的底板(外围电路)。

设计目标

  1. 通过设计该核心板和对应配套的底板,在实践中学习到相应的知识。
  2. 设计出一款可以使用核心芯片所具有的广泛的外设接口、并核心自身又有搭载必要的内存拓展空间。
  3. 利用设计出的核心板和底板,实现各种个人构想的项目。

硬件设计

Power

参考ST官方给出的H7电源设计,STM32H750XBH6共有以下供电域:

  1. dw
  2. 123
  3. 321
  4. 313421414

123321414

External Memory

GPIO AFIO

Debug Port

Physical Port

Parts

93
QtyValueFootprintReferences
28100nFCapacitor_SMD:C_0402_1005MetricC2, C16, C22, C24, C26, C27, C28, C32, C33, C37, C39, C47, C48, C49, C50, C51 +12
19100nFCapacitor_SMD:C_0201_0603Metric_Pad0.64x0.40mm_HandSolderC1, C3, C4, C5, C6, C10, C11, C12, C13, C14, C15, C17, C18, C19, C20, C21 +3
5120ΩInductor_SMD:L_0603_1608MetricFB2, FB3, FB4, FBopt1, FBopt2
54.7uFCapacitor_SMD:C_0402_1005MetricC34, C35, C38, C41, C42
31uFCapacitor_SMD:C_0402_1005MetricC23, C25, C29
32.2uFCapacitor_SMD:C_0402_1005MetricC30, C31, C62
210pFCapacitor_SMD:C_0402_1005MetricC65, C66
220pFCapacitor_SMD:C_0402_1005MetricC67, C68
2430pFCapacitor_SMD:C_0402_1005MetricC40, C44
2DF40C-100DP-0.4V_51_HRS:HIROSE_DF40C-100DP-0.4V_51_J1, J2
2W25Q32JVZPPackage_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mmU7, U8
10Resistor_SMD:R_0603_1608MetricR4
10 opt.Resistor_SMD:R_0603_1608MetricR11
10.47uFCapacitor_SMD:C_0402_1005MetricC36
10ΩResistor_SMD:R_0402_1005MetricR1
1100kΩResistor_SMD:R_0402_1005MetricR10
110KResistor_SMD:R_0402_1005MetricR5
110kΩResistor_SMD:R_0402_1005MetricR2
110uFCapacitor_SMD:C_0603_1608MetricC43
122uFCapacitor_SMD:C_0603_1608MetricC45
13.74kΩ/15kΩResistor_SMD:R_0402_1005MetricR7
1309kΩResistor_SMD:R_0402_1005MetricR9
132.768kCrystal_Handsoldering_AKL:Crystal_SMD_3215-2Pin_3.2x1.5mmY2
132MCrystal_AKL:Crystal_SMD_2016-4Pin_2.0x1.6mmY1
14.99kΩ/12kΩResistor_SMD:R_0402_1005MetricR8
1BAT54CPackage_TO_SOT_SMD:SOT-23D3
1REF3020Package_TO_SOT_SMD:SOT-23U4
1STM32H750XBHxPackage_BGA:TFBGA-265_14x14mm_Layout17x17_P0.8mmU1
1TPS74801DRCPackage_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.65x2.4mm_ThermalViasU2
1TPS82130Package_LGA:Texas_SIL0008D_MicroSiP-8-1EP_2.8x3mm_P0.65mm_EP1.1x1.9mm_ThermalViasU3
1~Package_BGA:BGA-90_8.0x13.0mm_Layout2x3x15_P0.8mmU9

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Questions

How big is the H750xb core PCB?

It measures 50 × 35 mm and has 6 copper layers, 1.56 mm thick.

What parts does the H750xb core use?

93 parts, built around the TPS82130SIL, W25Q32JVZPIQ, TPS74801DRC and BAT54C. 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 H750xb core KiCad files?

From the KotoriProject/STM32H750XB_Core repository on GitHub, at the commit this page was made from: the board is PCB/kicad_project/h750xb_core.kicad_pcb and its schematic PCB/kicad_project/h750xb_core.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the H750xb core design in my own project?

Its repository states no licence, so its author keeps all rights: ask KotoriProject before reusing the design.