With the continuous development of railway transportation systems, metro vehicles, and high-speed trains, onboard electronic subsystems are becoming increasingly complex. As a result, higher requirements are placed on power supply stability, electrical isolation, EMI resistance, and environmental adaptability.
Subsystems such as Train Control and Management Systems (TCMS), Passenger Information Systems (PIS), onboard LED lighting, HVAC control units, communication modules, and signal acquisition systems typically operate on a 24V DC architecture, but onboard voltage fluctuations and electromagnetic interference can affect system reliability.
The MINGZINC MDE300-24S24 is a 300W isolated 24V to 24V IP65 waterproof DC-DC converter specifically designed for railway onboard applications. It provides stable isolated auxiliary power conversion, ensuring reliable operation of critical train electronic subsystems under harsh rail operating conditions.
Why Railway Systems Require an Isolated 24V to 24V DC-DC Converter
Typical onboard railway power architecture:
Main onboard supply → 24V DC bus
24V DC bus → isolated subsystem distribution
The 24V subsystem supports:
Train Control and Management System (TCMS)
Passenger Information System (PIS)
Onboard LED lighting systems
HVAC control modules
Onboard communication equipment
Sensor and signal processing units
During train operation, events such as:
traction motor startup
regenerative braking
electromagnetic braking
rapid load switching
generate surge voltage and EMI disturbances.
Using non-isolated power modules may result in:
TCMS false alarms
PIS display instability
lighting flicker
HVAC controller reset
Therefore, railway onboard systems should use:
isolated 24V to 24V DC-DC converters for stable subsystem power isolation
Typical Applications of MDE300-24S24 in Railway Systems
The MDE300-24S24 is widely used in:
Train Control Management Systems (TCMS)
Providing stable isolated power for onboard control electronics.
Passenger Information Systems (PIS)
Supplying reliable power to:
display panels
announcement systems
passenger communication interfaces
Onboard LED Lighting Systems
Ensuring stable voltage output and preventing lighting flicker.
HVAC Control Units
Supporting reliable operation of temperature regulation systems.
Onboard Communication Systems
Providing clean auxiliary power for data transmission equipment.
Signal Acquisition and Sensor Systems
Improving immunity against electromagnetic interference.
Its fast dynamic response capability ensures stable 24V output during train acceleration, braking, and load switching events.
Key Electrical Specifications
Model: MDE300-24S24
Rated Power: 300W
Input Voltage: 24VDC
Input Range: 18–36VDC
Output Voltage: 24VDC
Output Current: 12.5A
Conversion Type: Isolated DC-DC
Protection Level: IP65 Waterproof
Housing: Fully sealed aluminum enclosure
Cooling Method: Natural cooling (optional heatsink)
Core Technical Advantages for Rail Transit Applications
Wide Input Voltage Range for Onboard Power Stability
Supports 18–36VDC wide input range, ensuring compatibility with:
train onboard voltage fluctuations
cable voltage drop conditions
load switching disturbances
Low Ripple and Low Noise Output
Integrated wideband filtering reduces EMI interference and supports stable operation of:
TCMS systems
PIS modules
communication interfaces
sensor electronics
High Electrical Isolation Protection
High isolation voltage design protects onboard electronics against:
surge voltage
transient spikes
common-mode interference
ensuring reliable railway subsystem operation.
High Efficiency Aluminum Thermal Structure
The sealed aluminum housing enables:
fanless operation
long service life
installation inside enclosed onboard cabinets
Fast Dynamic Response During Train Load Changes
Maintains stable 24V output during:
train acceleration
braking transitions
emergency load switching
preventing subsystem reset or malfunction.
Comprehensive Protection Features
The MDE300-24S24 includes:
input undervoltage protection
input overvoltage protection
output overcurrent protection
short circuit protection
overtemperature protection
input-to-output isolation protection
ensuring long-term safe railway operation.
IP65 Waterproof Protection for Railway Environments
Railway electronic equipment typically operates in:
sealed electrical cabinets
vibration environments
coastal humid railway lines
dust-intensive tunnel systems
The fully sealed structure provides IP65 protection, improving reliability and operational lifetime.
Compliance with International Safety Standards
Designed according to:
UL1950
IEC950
Helping railway system integrators meet international compliance requirements.
Customization Advantages from MINGZINC Technology
MINGZINC supports:
custom input voltage ranges
custom output configurations
enhanced EMI / EMC performance
anti-vibration reinforcement
moisture-resistant protection
salt-spray resistant coating
OEM / ODM customization
engineering sample testing support
About Guangdong Mingzinc Technology Co., Ltd.
Guangdong Mingzinc Technology Co., Ltd., located in Dongguan, China, specializes in the development and manufacturing of AC-DC power modules, DC-DC converters, railway power supplies, industrial control power modules, and new energy power solutions. Its products are widely used in rail transit systems, industrial automation, communication equipment, renewable energy platforms, and intelligent manufacturing applications worldwide.
Get the MDE300-24S24 Datasheet
If you are designing railway onboard electronics, TCMS platforms, passenger information systems, or train communication subsystems, contact MINGZINC engineers today to obtain the MDE300-24S24 datasheet and technical support.
