TP-DCDC-1248 Passive PoE Injector 48V 24W DC-DC Converter 10/100

The TP-DCDC-1248 from Tycon Power is a compact and reliable Passive PoE Injector with an integrated DC-to-DC converter, designed to provide regulated 48VDC Power over Ethernet from low-voltage DC power sources. With a wide 9-36VDC input range, it is well suited to 12V and 24V battery systems, vehicles and other low-voltage installations.

The integrated 10/100Mbps PoE inserter allows Ethernet data and 48VDC passive PoE power to be delivered over a single CAT5/CAT6 Ethernet cable to compatible network equipment. This makes the TP-DCDC-1248 a practical solution for powering wireless access points, client devices, IP phones and security cameras where conventional AC power is unavailable or impractical.

The unit provides up to 24W of output power and features a regulated 48VDC output. Its dual power inputs allow two DC power sources to be connected, such as a primary and backup supply, while built-in protection features help protect the system against common electrical faults.

Key Features

• Passive PoE injector with integrated DC-DC converter
• Wide 9-36VDC input voltage
• Regulated 48VDC passive PoE output
• Up to 24W output power
• Integrated 10/100Mbps PoE inserter
• Dual inputs for connecting two power sources
• Suitable for primary and backup power configurations
• Shielded RJ45 Ethernet connections
• Supplies passive PoE through unused Ethernet pairs
• Short-circuit protection
• Over-current protection
• Reverse-voltage protection
• Over-voltage protection
• Surge and overload protection
• Designed for high-temperature operation
• Compact, space-saving design
• UL Listed I.T.E. power supply

48VDC Power over Ethernet

The TP-DCDC-1248 converts a variable 9-36VDC input into a regulated 48VDC passive PoE output. This allows compatible network equipment to receive power through its Ethernet connection without requiring a separate AC power source at the remote device.

Power is supplied over the unused Ethernet pairs:

• Pins 4,5: V+
• Pins 7,8: V-

The device is designed for passive PoE applications, so connected equipment must be compatible with the supplied 48V passive PoE voltage.

Integrated 10/100Mbps PoE Inserter

The built-in PoE inserter supports 10/100Mbps Ethernet, allowing network data and power to share the same CAT5/CAT6 cable.

The unit accepts data through a shielded RJ45 input and provides data together with passive PoE power through the shielded RJ45 output.

This simplifies installations by reducing the need for separate power cabling between the injector and compatible remote network equipment.

Dual Power Inputs

The TP-DCDC-1248 features a common negative connection and two positive inputs, allowing two power sources to be connected. This provides flexibility for applications where a primary power supply and backup source are required.

It is particularly useful in battery-powered installations where power availability and redundancy are important considerations.

Built-In Protection

The converter incorporates multiple protection features designed to improve reliability and protect the power system and connected equipment. These include:

• Short-circuit protection
• Over-current protection
• Reverse-voltage protection
• Over-voltage protection
• Surge protection
• Overload protection
• High-temperature operation capability

Applications

The TP-DCDC-1248 is suitable for:

• 12V battery systems
• 24V battery systems
• Wireless access points
• Wireless client devices
• IP telephone systems
• Security camera systems
• CCTV installations
• Remote network equipment
• Low-voltage PoE installations
• Battery-powered networking
• Remote wireless installations
• Security and surveillance applications

Technical Specifications

• Model: TP-DCDC-1248
• Product Type: Passive PoE Injector / DC-DC Converter
• Device Type: Injector
• PoE Type: Passive PoE
• Input Voltage: 9-36VDC
• Output Voltage: Regulated 48VDC Passive PoE
• Maximum Output Power: Up to 24W
• Ethernet Speed: 10/100Mbps
• PoE Inserter: Integrated 10/100Mbps PoE inserter
• Data Input: Shielded RJ45
• Data/PoE Output: Shielded RJ45
• PoE Output Pins: 4,5 (V+) and 7,8 (V-)
• Power Inputs: Dual positive inputs with common negative
• Protection: Short circuit, over-current, reverse voltage, over-voltage, surge and overload
• High Temperature Operation: Yes
• Certification: UL Listed I.T.E. power supply
• Enclosure Option: Metal enclosure model available for industrial applications

Important Compatibility Information

The TP-DCDC-1248 provides 48V passive PoE. It does not perform the standard IEEE 802.3af PoE handshake unless using a compatible 802.3af model. Always verify the power requirements and PoE compatibility of the connected network equipment before installation.

Product Summary

The TP-DCDC-1248 Passive PoE Injector provides a convenient way to deliver regulated 48VDC power and 10/100Mbps Ethernet data from a 9-36VDC source. With support for up to 24W output power, dual power inputs and comprehensive electrical protection, it is well suited to battery-powered wireless, CCTV, IP telephone and remote networking applications.

Its compact design and integrated PoE inserter simplify installations where compatible network equipment needs 48V passive PoE without access to a conventional AC power supply.

What's in the box
1 x TP-DCDC-1248 Passive PoE Injector 48V 24W DC-DC Converter 10/100