ETA-USA EPD300-SC DC/DC Power Supplies

Introduction

The ETA-USA EPD300-SC is a high-power, isolated DC/DC converter designed to deliver dependable regulated power in demanding electronic systems. With a 300 W power rating, wide 4:1 input range, and compact half-brick form factor, it supports applications that need efficient power conversion and robust electrical isolation.

Part Description

The EPD300-SC is an encapsulated, single-output DC/DC power supply built to the 1/2-brick DOSA mechanical standard. It is available in versions intended for nominal 28 VDC or 48 VDC input systems, while its 4:1 input-voltage range accommodates substantial variations in source voltage.

Key characteristics include:

• 300 W output power capability
• Single regulated DC output
• 4:1 wide input-voltage range
• Versions for 28 VDC and 48 VDC nominal input systems
• 3000 VDC input-to-output isolation
• Efficiency of up to 89%
• Encapsulated construction for improved environmental resilience
• Soft-start operation to reduce inrush current and startup stress
• Overload protection
• Short-circuit protection
• Operating temperature range from -40°C to +100°C
• 1/2-brick DOSA-compatible format

Its combination of high isolation, wide operating temperature range, and integrated protection features makes the EPD300-SC suitable for systems exposed to electrical noise, fluctuating input conditions, or harsh environments.

Applications

Potential applications for the EPD300-SC include:

• Distributed power architectures
• Telecom power systems
• Wireless base stations
• Network switches and routers
• Industrial control equipment
• Test and measurement systems
• Embedded computing platforms
• Data communications equipment
• Transportation electronics
• Battery-powered high-power systems
• Remote monitoring and automation systems
• Military and ruggedized electronic systems

Industries

The EPD300-SC DC/DC converter can be used across a range of industries, including:

• Telecommunications
• Industrial automation
• Transportation
• Rail and transit
• Aerospace and defense
• Energy and power distribution
• Medical equipment
• Networking and data communications
• Robotics
• Test and measurement
• Security and surveillance
• Semiconductor and electronics manufacturing

Usage Ideas

1. Industrial Controller Power Module
   Use the converter to generate an isolated supply rail for a programmable logic controller, motion-control system, or factory automation cabinet operating from a 24 V or 48 V DC bus.

2. Telecom Equipment Power Stage
   Integrate the EPD300-SC into a 48 V telecom power architecture to supply processing boards, radio modules, or networking hardware requiring a regulated isolated output.

3. Rugged Mobile Electronics Supply
   Build a power subsystem for a vehicle-mounted computer, communications unit, or monitoring system where a fluctuating DC source and wide temperature conditions must be tolerated.

Conclusion

The ETA-USA EPD300-SC is a 300 W isolated DC/DC power supply intended for high-performance and space-conscious power designs. Its wide 4:1 input range, 3000 VDC isolation, high efficiency, protection features, and -40°C to +100°C operating range make it a strong option for industrial, telecom, transportation, and rugged embedded power applications.