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[Rev0_2] PoE Power does not work #24

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opened 2023-10-26 16:43:07 +08:00 by linuswck · 1 comment
linuswck commented 2023-10-26 16:43:07 +08:00
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Board Revision:

rev0_2

Description of Issue:

PoE cannot provide power to the board normally.

Cause of problem:

Both RJ45 and PoE Power Module have a Bridge Rectifier.

RJ45 Diagram:
image

SDAPO PM1202 12V2A PoE Power Module:
Note: MB6S is a single phase bridge rectifier
PM1202_PoE_Power_Module

Their typical application diagram also implies it having a bridge rectifier on board.
image

Solution:

Either change the RJ45 Connector or change the PoE power module.

# Board Revision: rev0_2 # Description of Issue: PoE cannot provide power to the board normally. # Cause of problem: Both RJ45 and PoE Power Module have a Bridge Rectifier. RJ45 Diagram: ![image](/attachments/ff7921d1-c0b8-4157-9c80-1863813a8490) SDAPO PM1202 12V2A PoE Power Module: Note: MB6S is a single phase bridge rectifier ![PM1202_PoE_Power_Module](/attachments/e7bd6a74-bc8a-45a9-98ae-1e08e2a234f3) Their typical application diagram also implies it having a bridge rectifier on board. ![image](/attachments/a227a00d-45cb-41a6-a775-6ec90f426c87) # Solution: Either change the RJ45 Connector or change the PoE power module.
image.png
54 KiB
PM1202_PoE_Power_Module.jpg
288 KiB
image.png
191 KiB
linuswck commented 2023-10-26 17:37:32 +08:00
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Collaborator

Solution

Change the RJ45 Connector to ARJM11C7-114-BA-EW2. This connector does not have internal rectifier and is also used in sinara-hw Thermostat.

Sinara-hw Thermostat Power Path
RJ45 Connector(ARJM11C7-114-BA-EW2) -> Bridge Rectifier -> Soft Start and Filtering Network -> Ag5300 PD Module(with no bridge rectifier) -> Supply 12V Power

New Kirdy PoE Power Path
RJ45 Connector(ARJM11C7-114-BA-EW2) -> SDAPO PM1202 12V2A PoE Power Module(with internal bridge rectifier) -> LC Noise Filtering Network -> Supply 12V Power

Soft Start and Filtering Network in both repos:
image

# Solution Change the RJ45 Connector to ARJM11C7-114-BA-EW2. This connector does not have internal rectifier and is also used in [sinara-hw Thermostat](https://github.com/sinara-hw/Thermostat). Sinara-hw Thermostat Power Path RJ45 Connector(ARJM11C7-114-BA-EW2) -> Bridge Rectifier -> Soft Start and Filtering Network -> Ag5300 PD Module(with no bridge rectifier) -> Supply 12V Power New Kirdy PoE Power Path RJ45 Connector(ARJM11C7-114-BA-EW2) -> SDAPO PM1202 12V2A PoE Power Module(with internal bridge rectifier) -> LC Noise Filtering Network -> Supply 12V Power Soft Start and Filtering Network in both repos: ![image](/attachments/ed534447-4890-4aab-a289-b5c497f52d2a)
image.png
22 KiB
sb10q closed this issue 2023-12-19 18:30:32 +08:00
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Reference: sinara-hw/kirdy#24
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