200W Isolated DC-DC Converter for Industrial Ethernet Switch Power

29 Jul, 2026 5:01pm

Why Does an Industrial Ethernet Switch Keep Disconnecting When the Network Configuration Is Correct?

When an Industrial Ethernet switch drops connections, restarts unexpectedly or loses data, engineers usually check the network topology, communication protocol, cables and software configuration first.

However, the actual cause is often an unstable 24V auxiliary power rail.

Voltage fluctuations on a shared 48VDC bus can occur when motors start, loads change or other equipment switches on. If the DC-DC converter cannot maintain a stable 24V output, the Ethernet switch and connected communication devices may reboot or temporarily lose network connectivity.

Root Cause Analysis

Typical industrial network challenges include:

Voltage fluctuations on a shared 48VDC bus;

EMI generated by motor drives, inverters and servo systems;

Ground-loop noise between power and communication circuits;

Higher transient loads when switch ports and connected devices start;

Limited cabinet space and restricted airflow;

Continuous operation with minimal maintenance access.

A correct network configuration cannot prevent communication failures caused by an unstable power rail.

Engineering Requirements

Engineers need a power solution that provides:

A wide input range for fluctuating 48V systems;

Stable 24V output with adequate power margin;

Galvanic isolation to reduce ground interference;

Fanless natural cooling;

Undervoltage, overvoltage, overcurrent, short-circuit and thermal protection;

Practical integration into industrial control cabinets.

How MINGZINC Solves the Problem

The MDB200-48S24 accepts a wide 36–72VDC input and provides a regulated 24VDC output at up to 8.33A, delivering 200W for Industrial Ethernet switches.

The higher power capacity provides useful operating margin for multi-port switches, communication controllers and essential network peripherals, reducing the risk of continuously operating the converter close to its maximum load.

Input-to-output galvanic isolation helps prevent power-side noise and ground interference from reaching sensitive network equipment. Natural cooling eliminates fan-related maintenance, while the protection functions help safeguard both the converter and downstream devices during abnormal operating conditions.

Why MINGZINC?

MINGZINC develops isolated DC-DC power solutions around real project requirements rather than voltage ratings alone.

Our engineering capabilities include:

Customized input voltage, output voltage and power;

Power solutions from 30W to 20KW;

Galvanic isolation design;

Natural or forced-air cooling options;

Customized interfaces, mounting and mechanical structures;

OEM/ODM support and sample validation.

Customer Value

The MDB200-48S24 helps engineers:

Reduce switch resets and unexpected network interruptions;