| Parameter | Requirement |
|---|---|
| Application | PoE Switch / Networking Equipment |
| Customer Type | Networking Device Manufacturer |
| Connected Devices | IP Cameras / Wireless AP / IoT Devices |
| Product Type | External AC/DC Power Adapter |
| Output Power | 120W |
| Output Voltage | 48V / 54V DC |
| Output Current | 2.5A / 2.22A |
| Input Voltage | 100-240V AC |
| Operating Mode | Continuous Operation |
| Efficiency | DOE Level VI |
| Protection | OVP / OCP / SCP / OTP |
| Installation | Commercial & Industrial Environment |
During the development of the PoE networking system, the customer faced several power design challenges.
A 4-port PoE+ switch needs to deliver power to multiple connected devices simultaneously.
Each PoE+ port can provide up to 30W, meaning the system requires sufficient power capacity to support:
A low-power adapter could cause:
Unlike traditional electronic devices, PoE switches dynamically allocate power according to connected equipment.
The power adapter must handle:
Networking equipment often operates continuously in:
The customer required a solution capable of:
For PoE applications, voltage drop over Ethernet cables can affect power delivery.
The customer needed:
Based on the customer’s PoE networking requirements, XJK Power developed a customized 120W high-performance power adapter platform.
The solution included:
The adapter supports:
The 54V configuration provides additional voltage margin for longer cable distances and voltage drop compensation.
The 120W power rating was selected to provide sufficient capacity for:
The adapter integrates:
High efficiency helps improve reliability in continuous networking applications.
Integrated protections include:
These features protect both the adapter and connected PoE equipment.
Our engineering process helps device manufacturers move efficiently from requirement definition to production-ready power solutions.
Review voltage, current, connector, plug type, installation environment, and medical device requirements.
Electrical feasibility assessment, connector matching, and product configuration planning.
Prototype recommendation or customized sample preparation based on project requirements.
Review safety expectations, EMC considerations, and application-specific requirements.
Functional verification and customer-side evaluation before production.
OEM production support for customized healthcare power solutions.
A typical 4-port PoE+ switch requires:
4 Ports × 30W = 120WHowever, the actual power requirement also includes:
Therefore, a 120W adapter provides a balanced solution between:
PoE systems typically operate around:
Higher voltage helps:
Networking devices frequently operate in enclosed spaces.
The adapter design focuses on:
Different networking systems require different interfaces:
Options include:
This enables integration into:
The customized 120W 48V/54V power adapter successfully supported the customer’s PoE networking platform.
The solution achieved:
✔ Stable power delivery for multiple PoE ports
✔ Reliable operation under continuous workloads
✔ Improved thermal performance
✔ Reduced risk of unexpected network interruptions
✔ Simplified integration for networking equipment manufacturers
A 4-port PoE+ switch can deliver up to 30W per port, requiring approximately 120W power capacity when fully loaded.
48V is the standard PoE voltage. 54V provides additional margin to compensate for voltage drop in longer cable installations.
Yes. The actual capability depends on camera power consumption and PoE power budget allocation.
Common requirements include:
EMC performance is especially important to avoid interference with communication systems.
Yes. XJK provides OEM/ODM customization including voltage, current, connectors, cables, and mechanical requirements.
Choosing the right power adapter is critical for network stability, PoE performance, and long-term reliability.
XJK Power provides customized 48V/54V AC/DC power solutions for PoE switches, industrial networking equipment, and communication systems.
From engineering evaluation to mass production, our team supports your project requirements.
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