ETA-USA EPD300-SC 300W DC/DC Power Supply

Introduction

The ETA-USA EPD300-SC is a high-power, isolated DC/DC converter designed to provide dependable power conversion in demanding electronic systems. Delivering up to 300 W, this encapsulated converter supports nominal 28 VDC or 48 VDC input systems and offers a wide 4:1 input voltage range.

Part Description

The EPD300-SC is a 1/2-brick DOSA-standard DC/DC power supply module intended for compact, high-reliability power architectures. Its isolated design provides 3000 VDC isolation between input and output, helping protect sensitive downstream circuitry and improve system safety.

Key characteristics include:

• Up to 300 W output power
• Nominal 28 VDC or 48 VDC input options
• Wide 4:1 input voltage operating range
• Up to 89% conversion efficiency
• 3000 VDC input-to-output isolation
• Soft-start functionality to reduce inrush effects during startup
• Integrated protection features for more robust operation
• Wide operating temperature range from -40°C to +100°C
• 1/2-brick DOSA mechanical format
• Aluminum base plate for thermal transfer
• Plastic enclosure with silicone potting for environmental and mechanical protection

The combination of encapsulation, wide temperature capability, isolation, and high output power makes the EPD300-SC suitable for rugged systems where stable DC power must be generated from variable input rails.

Applications

Potential applications for the EPD300-SC include:

• Distributed power architectures
• Industrial control cabinets
• Embedded computing platforms
• Communications infrastructure
• Wireless base stations
• Network switches and routers
• Transportation electronics
• Railway power subsystems
• Battery-powered equipment
• Test and measurement instruments
• Military and defense electronics
• Remote monitoring and telemetry systems
• Robotics and automated machinery
• High-power LED and imaging systems

Industries

The EPD300-SC can be used in a range of industries, including:

• Industrial automation
• Telecommunications
• Transportation and rail
• Aerospace and defense
• Energy and power distribution
• Medical equipment
• Data communications
• Robotics
• Test and measurement
• Security and surveillance
• Marine electronics
• Renewable energy systems

Usage Ideas

1. Industrial Controller Power Module
   Use the converter to generate an isolated regulated supply for PLCs, motor-control electronics, sensors, and communication modules within an industrial control enclosure.

2. Mobile Communications Power System
   Integrate the EPD300-SC into a 48 VDC telecom power architecture to supply processing boards, radio equipment, or network hardware with efficient isolated power.

3. Rugged Vehicle Electronics Supply
   Build a protected DC power subsystem for a vehicle-mounted computer, camera system, or data acquisition unit operating from a nominal 28 VDC electrical system.

Conclusion

The ETA-USA EPD300-SC is a robust 300 W isolated DC/DC power supply for systems requiring efficient conversion, wide input flexibility, and reliable operation in challenging environments. Its 4:1 input range, 3000 VDC isolation, protective features, and -40°C to +100°C operating capability make it a practical choice for industrial, telecommunications, transportation, and other high-reliability power applications.