alex-dnd/power_boardУниверсальная четырёхслойная плата питания от 6S на LMR33630: выходы 5 В и 7 В до 3 А. KiCad 10.
Power board is an open-source printed circuit board by alex-dnd, from the alex-dnd/power_board repository on GitHub. It is a 4-layer board of 56.5 × 45 mm with 51 parts on 20 nets, routed with 227 tracks and 52 vias.
It is built around the LMR33630BDDA, SMBJ26CA and SMBJ7.5CA, with the SUD50P06-15 among its other parts. Its parts include 27 capacitors, 7 connectors, 5 resistors, 3 diodes and 2 ICs. It belongs with the ESP32 boards of this library.
Универсальная четырёхслойная плата питания. Питается от аккумулятора 6S (19,8–25,2 В) и выдаёт 7 В до 3 А, 5 В до 3 А и отдельный выход с напряжением батареи через самовосстанавливающийся предохранитель. Подписи выходов на плате (SERVO, POTOK, SK3500, ESP, RS485) остались от первого применения, использовать выходы можно для любой нагрузки в этих пределах.
Разведена вручную в KiCad 10.
| Разъём | Подпись | Напряжение | Откуда | Ток |
|---|---|---|---|---|
| J1 | BAT 6S | вход 19,8–25,2 В | аккумулятор | — |
| J2 | SERVO 7V | 7,06 В | LMR33630 (U2) | до 3 А |
| J3 | POTOK | напряжение батареи | через F2 1 А и FB1 | до 1 А |
| J4 | SK3500 | 5 В | U1 через LC-фильтр FB2 | до 1 А |
| J5 | ESP VIDEO | 5,02 В | LMR33630 (U1) | общие 3 А на J4–J7 |
| J6 | ESP SERVO | 5,02 В | U1 | |
| J7 | RS485 | 5,02 В | U1 |
Квадратная площадка у каждого разъёма — «+», круглая — GND. Провода припаиваются в отверстия, клеммников нет.
6S ─[F1 5 А]─[Q1 защита от переполюсовки]─[D2 TVS + C1 100 мкФ]─┬─ U1 LMR33630 → 5 В ─┬─ ESP32 ×2, RS485
│ └─ FB2 + C19–C21 → SK3500
├─ U2 LMR33630 → 7 В → сервопривод (D3 TVS, C15 470 мкФ)
└─ F2 1 А → FB1 → «Поток»| Параметр | Значение |
|---|---|
| Размер | 56,5 × 45 мм |
| Слои | 4: F.Cu сигналы + GND, In1 и In2 сплошная GND, B.Cu сигналы + GND |
| Толщина | 1,6 мм, фольга 35 мкм |
| Минимальная дорожка и зазор | 0,2 / 0,2 мм |
| Переходные отверстия | 0,6/0,3 и 0,8/0,4 мм |
| Дорожки SW → дроссель | 1,0 мм |
| Проверки | ERC 0, DRC 0 ошибок и 0 неразведённых (остались только предупреждения шелкографии) |
kicad/ исходники KiCad: схема, плата, проект
gerber/ файлы для производства (Gerber + сверловка) и готовый архив power_board_gerber.zip
docs/ спецификация (BOM) и инструкция по заказу в Резоните
assembly/ файлы для заказа монтажа (BOM в Excel)| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100nF | Capacitor_SMD:C_0805_2012Metric | C5, C11, C18, C20, C23, C25, C27 |
| 5 | 22uF 16V | Capacitor_SMD:C_1206_3216Metric | C6, C7, C12, C13, C14 |
| 3 | 100k | Resistor_SMD:R_0805_2012Metric | R1, R2, R4 |
| 3 | 10uF 16V | Capacitor_SMD:C_0805_2012Metric | C17, C19, C26 |
| 2 | 100uF 10V | Capacitor_SMD:CP_Elec_6.3x7.7 | C22, C24 |
| 2 | 100uF 50V | Capacitor_SMD:CP_Elec_10x10 | C1, C16 |
| 2 | 10uF 50V | Capacitor_SMD:C_1206_3216Metric | C2, C8 |
| 2 | 1uF 16V | Capacitor_SMD:C_0805_2012Metric | C4, C10 |
| 2 | 220nF 50V | Capacitor_SMD:C_0805_2012Metric | C3, C9 |
| 2 | LMR33630BDDA | Package_SO:Texas_HSOP-8-1EP_3.9x4.9mm_P1.27mm_ThermalVias | U1, U2 |
| 1 | 12V | Diode_SMD:D_SOD-123 | D1 |
| 1 | 16.5k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 1A | Fuse:Fuse_1812_4532Metric | F2 |
| 1 | 2.2uH | Inductor_SMD:L_Bourns_SRP7028A_7.3x6.6mm | L1 |
| 1 | 24.9k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 4.7uH | Inductor_SMD:L_Bourns_SRP7028A_7.3x6.6mm | L2 |
| 1 | 470uF 16V | Capacitor_SMD:CP_Elec_8x10 | C15 |
| 1 | 47uF 10V | Capacitor_SMD:CP_Elec_5x5.4 | C21 |
| 1 | 5A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | ESP32_SERVO | Connector_Wire:SolderWire-0.25sqmm_1x02_P4.2mm_D0.65mm_OD1.7mm | J6 |
| 1 | ESP32_VIDEO | Connector_Wire:SolderWire-0.25sqmm_1x02_P4.2mm_D0.65mm_OD1.7mm | J5 |
| 1 | Ferrite 1A | Inductor_SMD:L_1206_3216Metric | FB2 |
| 1 | Ferrite 2A | Inductor_SMD:L_1206_3216Metric | FB1 |
| 1 | POTOK_VBAT | Connector_Wire:SolderWire-0.25sqmm_1x02_P4.2mm_D0.65mm_OD1.7mm | J3 |
| 1 | RS485_5V | Connector_Wire:SolderWire-0.25sqmm_1x02_P4.2mm_D0.65mm_OD1.7mm | J7 |
| 1 | SERVO_7V | Connector_Wire:SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | J2 |
| 1 | SK3500_5V | Connector_Wire:SolderWire-0.25sqmm_1x02_P4.2mm_D0.65mm_OD1.7mm | J4 |
| 1 | SMBJ26CA | Diode_SMD:D_SMB | D2 |
| 1 | SMBJ7.5CA | Diode_SMD:D_SMB | D3 |
| 1 | SUD50P06-15 | Package_TO_SOT_SMD:TO-252-2 | Q1 |
| 1 | Screw_Terminal_01x02 | Connector_Wire:SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | J1 |
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It measures 56.5 × 45 mm and has 4 copper layers, 1.6 mm thick.
51 parts, built around the LMR33630BDDA, SMBJ26CA, SMBJ7.5CA and SUD50P06-15. 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.
From the alex-dnd/power_board repository on GitHub, at the commit this page was made from: the board is kicad/power_board.kicad_pcb and its schematic kicad/power_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask alex-dnd before reusing the design.