Power over Ethernet (PoE)

Part Number	Description / PDF	Quantity
TP-POE-HP-24 Tycon Systems, Inc.	24V 48W HIGH POWER POE POWER INS	0
TP-POE-24 Tycon Systems, Inc.	24V 18W 10/100MB POE POWER INSER	44
TP-MS4X4 Tycon Systems, Inc.	MID SPAN, HIGH POWER 1A PER PORT	0
TP-POE-2456GD Tycon Systems, Inc.	24V PASSIVE POE TO GIGABIT 802.3	0
TP-MS308 Tycon Systems, Inc.	MID SPAN HIGH POWER 16.8W POE IN	0
TP-MS316 Tycon Systems, Inc.	MID SPAN HIGH POWER 16.8W POE IN	0
TP-POE-HP-48DX2 Tycon Systems, Inc.	110/220VAC IN, QTY 2 25W 802.3AF	0
TP-MS4G-VHP Tycon Systems, Inc.	4 PORT MID SPAN, VERY HIGH POWER	0
TP-MS616-ISO Tycon Systems, Inc.	ISOLATED MID SPAN VERY HIGH POWE	0
TP-SW8NC-OUT48 Tycon Systems, Inc.	OUTDOOR 8 PORT 10/100 48VDC PASS	0
TP-POE-24-12W Tycon Systems, Inc.	24V 12W 10/100MB PASSIVE POE POW	598
TP-POE-48GD Tycon Systems, Inc.	48V 16.8W 802.3AF GIGABIT POE PO	0
TP-POE-HP-48G Tycon Systems, Inc.	56V 50W HIGH POWER GIGABIT PASSI	51
TP-MS616 Tycon Systems, Inc.	MID SPAN VERY HIGH POWER 40W POE	0
TP-POE-48G Tycon Systems, Inc.	48V 24W GIGABIT POE POWER INSERT	0
TP-POE-48D Tycon Systems, Inc.	48V 18W POE POWER SOURCE, SURGE	0
TP-POE-24-WP Tycon Systems, Inc.	24V 24W 10/100MB POE POWER INSER	0
TP-POE-2456D Tycon Systems, Inc.	24V PASSIVE POE TO 802.3AF/AT CO	0

Power over Ethernet (PoE)

1. Overview

Power Supplies (PSUs) provide electrical energy to devices, categorized as external (AC adapters) or internal (mounted within devices). Power over Ethernet (PoE) integrates data and power delivery over Ethernet cables, enabling efficient power management for networked devices. PoE eliminates redundant cabling, reduces installation costs, and supports flexible device deployment in modern applications like IoT, surveillance, and smart buildings.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
PoE (IEEE 802.3af)	Up to 15.4W, legacy devices	IP phones, basic surveillance cameras
PoE+ (IEEE 802.3at)	Up to 30W, dynamic power allocation	PTZ cameras, video phones
PoE++ (IEEE 802.3bt Type 3/4)	60W (Type 3), 90W (Type 4), 4-pair power	Wireless APs, LED lighting, thin clients
UPoE (Cisco Universal PoE)	Up to 60W, proprietary protocol	Digital signage, high-power sensors

3. Structure and Components

PoE systems consist of Power Sourcing Equipment (PSE) and Powered Devices (PD). PSEs (e.g., switches, injectors) include controllers for power negotiation, isolation transformers, and protection circuits. PDs (e.g., cameras, APs) feature rectifiers, DC-DC converters, and signature detection circuits. External PSUs typically use AC-DC conversion, while internal PSUs integrate DC-DC modules.

4. Key Technical Specifications

Parameter	Importance
Power Output (W)	Determines device compatibility (e.g., 15.4W for VoIP phones)
Efficiency (80 PLUS Rating)	Reduces energy waste and operational costs
Input Voltage Range	Ensures adaptability to global power standards (100-240V AC)
Protection Features	Overcurrent, overvoltage, and short-circuit protection
Compliance Standards	IEEE 802.3af/at/bt, UL 62368-1

5. Application Fields

Enterprise networks: Wireless access points, VoIP phones
Surveillance: IP cameras, PTZ domes
Smart buildings: LED lighting control, IoT sensors
Healthcare: Medical monitoring devices, mobile carts

6. Leading Manufacturers and Products

Vendor	Representative Product
Cisco Systems	Catalyst 9200L Series PoE switches
Microchip Technology	PoE++ (90W) controllers for PDs
TP-Link	TalkTalk L2+ PoE managed switches
Dell Technologies	PowerEdge R760xa with integrated PoE+

7. Selection Recommendations

Match power output with device requirements (e.g., 90W for high-density APs)
Verify IEEE standard compatibility for interoperability
Evaluate thermal management for high-power PoE++ deployments
Consider managed PoE switches for remote monitoring and QoS control

8. Industry Trends

Future developments include higher power delivery (90W+), improved energy efficiency (80 PLUS Titanium), and integration with IoT ecosystems. Standards like IEEE 802.3bt enable multi-gigabit PoE for 5G small cells and edge computing devices. Smart PoE systems with AI-driven power allocation are emerging for dynamic load management in data centers.