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Std EditionBackpowerAdapterRevB

Profile:Raspberry Pi Backpower Adapter

License: CC-BY 3.0

Project source: Cloned from BackpowerAdapterRevA

Published Time:2021-06-15 17:59:46
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Description

Sometimes it's not possible or really tedious to get a USB cable to the USB connector for power input on a Raspberry Pi. Since the 5V pins, the USB power connector and the USB hub share the same power rail, it doesn't matter where the electrons enter and exit. The only difference is that the Pi has a few capacitors, a resettable fuse and a diode directly behind the USB input. When powering the Pi via the 5V pins on the 40pin header, this protection and the capacitors to deal with sudden power draws won't work.

To make back-powering the Pi via the USB hub a bit more convenient, I made these backpower adapters that contain the same resettable fuse, capacitors and diode as the Raspberry Pi design.

Documents

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PCB_BackpowerAdapterRevB

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ID Name Designator Footprint Quantity BOM_Supplier BOM_Manufacturer Part BOM_Manufacturer BOM_Supplier Part
1 SMBJ5.0A D1 SMB_L4.6-W3.6-LS5.3-R-RD 1 LCSC SMBJ5.0A Brightking C78423
2 U-G-04WS-W-03 COPY USB2 USB-A-SMD_U-G-04WS-W-03 COPY 1 LCSC U-G-04WS-W-03 韩国韩荣 C283548
3 MF-MSMF260-2 U1 F1812 1 LCSC MF-MSMF260-2 BOURNS C89651
4 Header-Male-2.54_1x4 H1 HDR-TH_4P-P2.54-V 1 LCSC 210S-1*4P L=11.6MMGold-plated black Ckmtw C124378
5 10uF C1,C2 C1210 2 LCSC C1210C106M4PAC7800 KEMET C141046
6 JL127-50802G01 U2 CONN-TH_2P-P5.08_JL127-50802G01 1 LCSC JL127-50802G01 JILN C409161

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