100W Isolated DC-DC Converter for Outdoor Telecom Cabinet Auxiliary Power

28 Jul, 2026 11:50am

Why Do Outdoor Telecom Cabinets Experience Equipment Resets and Communication Interruptions?

In outdoor telecom infrastructure, engineers are often less concerned about the controller itself than about the reliability of its auxiliary power.

Industrial switches, communication controllers, routers, cooling systems and monitoring devices typically rely on a stable 12V rail. When the 48VDC telecom bus experiences voltage fluctuations, battery switching events, surge disturbances or EMI, auxiliary power instability can lead to equipment resets, communication failures and costly maintenance visits. Modern telecom systems also place strong emphasis on galvanic isolation and EMI immunity for long-term reliability.

Root Cause Analysis

Common engineering challenges include:

Voltage fluctuations on 48VDC telecom buses.

Surge and EMI caused by outdoor environments.

Ground loop noise in shared power systems.

High humidity, dust and temperature variations.

Unattended telecom sites requiring long-term reliability.

Engineering Requirements

Engineers need an auxiliary power solution that provides:

Stable 12V output from a fluctuating 48V input.

Galvanic isolation for safety and noise immunity.

EMI-resistant performance.

Reliable operation in harsh outdoor environments.

Flexible integration into telecom infrastructure.

How MINGZINC Solves the Problem

The MDA100-48S12 delivers a regulated 12VDC output from a wide 36–72VDC input, making it suitable for telecom power architectures.

Its galvanic isolation minimizes electrical interference, the fully potted construction improves durability against moisture and vibration, and the EMI-optimized design supports stable communication performance. Comprehensive protection functions further enhance long-term reliability in outdoor telecom applications.

Why MINGZINC?

MINGZINC develops application-oriented isolated power solutions for industrial and telecom projects.

Our capabilities include:

Custom input/output voltage

30W–20KW customization

Galvanic isolation

Fully potted construction

EMI/EMC optimized design

OEM/ODM engineering support

Customer Value

Engineers can benefit from:

Improved network uptime