Telecom Network Power Solution

Telecommunications Application

Description

High-reliability power system for telecommunications infrastructure with -48V DC input support

Core Advantages

Telecom Input Range 4:1 input range covers -36V to -72V DC, handling battery discharge and voltage drops in large installations.
High Efficiency Up to 89% efficiency minimizes power dissipation and cooling requirements in densely packed equipment racks.
High Isolation 3000VDC isolation voltage provides robust protection against transients and ground faults in telecom environments.
NEBS Compliant Designed to meet NEBS Level 3 requirements for reliability in telecom central offices and outdoor installations.
Remote Control Remote on/off and power good signals enable system management and redundant power configurations.

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 📄 Download
2 📄 Download

Applications

Base stations
Routers and switches
Optical transmission
Access networks
Data centers

Technical Specifications

input Voltage
-36VDC to -72VDC (48V nominal)
output Voltages
±15V, 5V, 3.3V, 12V
total Power
Up to 120W
efficiency
Up to 89%
isolation
3000VDC
operating Temp
-40°C to +85°C
mtbf
>2,000,000 hours

Customer Success Stories

Telecom Equipment Manufacturer

Network Infrastructure | 5G base station power system

Challenge

Needed reliable power for 5G small cell with -48V input, high efficiency for outdoor deployment, and NEBS compliance for carrier acceptance.

Solution

Implemented wide-input converters with 3000VDC isolation and remote monitoring. Used high-efficiency POL regulators for digital circuits.

Results

Optical Network Provider

Fiber Communications | DWDM optical amplifier power

Challenge

Required ultra-low noise power for sensitive optical amplifiers, operating from -48V telecom bus in outdoor cabinets with temperature extremes.

Solution

Designed multi-stage power with high-isolation converters and extensive filtering. Implemented thermal management for 70°C ambient operation.

Results

FAE Expert Insights

S

Senior FAE

Applications Engineer

10+ years

Professional Insights

Based on extensive experience supporting telecom customers with network infrastructure power design.

Key Takeaways

  • 4:1 input range essential for -48V battery systems
  • High isolation protects against telecom transients
  • NEBS compliance required for carrier acceptance
  • Remote monitoring enables predictive maintenance
  • High efficiency reduces cooling in dense racks

Decision Framework

Telecom Power Decision Framework
Steps:
  1. Characterize -48V bus under all conditions
  2. Determine isolation requirements for equipment
  3. Select converters with telecom input range
  4. Design for NEBS environmental compliance
  5. Implement remote monitoring capabilities

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

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Frequently Asked Questions

What is the typical voltage range for -48V telecom systems?

Telecom -48V systems typically operate from -40V (discharged battery) to -58V (charging float). During equalization charging, voltage can reach -66V. Recom's 4:1 input converters (36-75V range) accommodate this full operating range with margin.

Always use 4:1 input range converters for telecom applications to handle the full voltage range.

What is NEBS compliance and why is it important?

NEBS (Network Equipment Building System) is a set of standards for telecom equipment reliability. Level 3 includes requirements for temperature (-40°C to +65°C), humidity, vibration, seismic, and fire resistance. Carrier networks typically require NEBS compliance for equipment deployment in central offices.

Contact our FAE team for NEBS compliance guidance and component selection.