EC4AW24-72S05
4W ultra-wide input DC-DC converter with 24-72V input, 5V output, and 1600V isolation for industrial applications.
Product Overview
Description
The EC4AW24-72S05 from P-Duke is a compact 4W DC-DC converter designed for industrial and embedded applications. Featuring an ultra-wide 24-72V input range (3:1), this converter accommodates various DC bus voltages commonly found in industrial systems. The regulated 5V output at up to 800mA is ideal for powering digital logic, microcontrollers, and communication interfaces. The 1600V DC isolation provides functional isolation suitable for industrial equipment. With efficiency up to 87%, the EC4AW24-72S05 minimizes heat generation. The compact SIP-8 package saves PCB space and allows easy integration. Like all P-Duke converters, this unit undergoes 100% burn-in testing to ensure reliability.
Product Series
EC
Primary Application
Industrial control systems
Key Features
- 4W output power with 5V at 800mA
- Ultra-wide 24-72V input range (3:1)
- 1600V DC functional isolation
- High efficiency 87%
- Compact SIP-8 package
- Wide operating temperature range
- Short circuit protection
- 100% burn-in tested
Specifications
| outputPower | 4W |
|---|---|
| inputVoltage | 24-72V DC |
| outputVoltage | 5V DC |
| outputCurrent | 800mA |
| efficiency | 87% |
| isolation | 1600V DC |
| operatingTemperature | -40°C to +85°C |
| package | SIP-8 |
| mtbf | 1,500,000 hours |
Applications
Industrial control systems
Industrial automation and control
Sensor power supplies
Sensor signal conditioning
Communication interfaces
Communication and interface
Microcontroller power
Industrial automation and control
Battery-powered devices
Battery and charging management
Distributed power systems
Electronic system design
Test equipment
Electronic system design
Embedded systems
Electronic system design
FAE Expert Insights
"The EC4AW24-72S05 is my go-to recommendation for small industrial DC-DC conversion needs. The 5V output is perfect for digital logic and microcontrollers, and the 800mA capacity handles most small systems. The wide input range is incredibly useful - it handles 24V, 48V, and everything in between. I particularly like the compact SIP-8 package for space-constrained designs. The 87% efficiency is good for this power level and price point. What impresses me most is the MTBF rating of 1.5 million hours - that's exceptional for a converter in this class. I've used these in industrial sensors, communication modules, and control systems with zero field failures. For small industrial applications, this converter delivers excellent value and reliability."
Compact, reliable converter perfect for small industrial and embedded applications
— Sarah Liu, BeiLuo
Frequently Asked Questions
What is the typical efficiency at light loads?
The EC4AW24-72S05 maintains good efficiency across the load range: At 100% load (800mA): 87% typical efficiency; At 75% load (600mA): 86% typical efficiency; At 50% load (400mA): 84% typical efficiency; At 25% load (200mA): 80% typical efficiency. The efficiency curve is optimized for industrial applications where the converter typically operates at moderate to full load. At very light loads (<10%), efficiency decreases as the converter's internal power consumption becomes significant relative to output power. For battery-powered applications where light-load efficiency is critical, consider P-Duke's low-power series which are optimized for extended battery life.
For applications with varying load conditions, verify efficiency at your typical operating points.
What is the output ripple voltage of the EC4AW24-72S05?
The EC4AW24-72S05 features low output ripple voltage: Typical ripple is 50mV peak-to-peak at full load; Ripple decreases proportionally with load current; Maximum ripple is 100mV peak-to-peak under worst-case conditions. The low ripple is achieved through optimized output filtering and switching frequency selection. For applications requiring even lower ripple: Add external ceramic capacitors (10-100uF) close to the load; Use a small LC filter if ripple requirements are stringent; Consider linear post-regulation for noise-sensitive analog circuits. The converter's switching frequency (typically 300kHz) is high enough to be easily filtered while maintaining good efficiency. Ripple measurements should be made with a oscilloscope probe directly at the output terminals with proper grounding technique.
For noise-sensitive applications, add external filtering or consider linear post-regulation.
Can the EC4AW24-72S05 be used in automotive applications?
The EC4AW24-72S05 can be used in some automotive applications with considerations: Input voltage range (24-72V) covers 24V commercial vehicle systems; Operating temperature range (-40°C to +85°C) meets automotive requirements; However, the converter is not specifically qualified to automotive standards (AEC-Q100); Load dump protection may be needed for 24V vehicle systems where voltage transients can exceed 100V; Crank voltage drop immunity should be verified for the specific application. For automotive-qualified DC-DC converters, P-Duke offers specific series designed and tested to automotive standards. For commercial vehicles (trucks, buses, construction equipment) where automotive qualification is not strictly required, the EC4AW series can be suitable with appropriate external protection.
For automotive applications, verify voltage transient requirements and consider automotive-qualified converters.
What is the startup time of the EC4AW24-72S05?
The EC4AW24-72S05 features fast startup for responsive operation: Typical startup time is 50ms from input voltage application to regulated output; This includes internal soft-start to limit inrush current; Output rise time is controlled to prevent overshoot; Startup time is relatively constant across the input voltage range. The fast startup is beneficial for: Systems requiring quick power-up after input application; Battery-powered devices where power is cycled frequently; Applications with supervisory circuits requiring fast power good indication. The converter includes internal soft-start circuitry that gradually ramps the output voltage, eliminating inrush current spikes that could stress input capacitors or cause EMI issues. For applications requiring even faster startup, contact P-Duke for specific recommendations.
For time-critical applications, verify startup time meets your system requirements.
How does the converter handle short circuit conditions?
The EC4AW24-72S05 includes comprehensive short circuit protection: Hiccup mode operation - the converter shuts down and periodically attempts restart during sustained short circuit; Automatic recovery - normal operation resumes when short circuit is removed; Current limiting - peak current is limited to protect internal components; Thermal protection - converter shuts down if internal temperature exceeds limits during fault. Short circuit behavior: Output current is limited to approximately 1.5A during short; Converter enters hiccup mode if short persists for more than 100ms; Restart attempts occur every 500ms; No damage occurs from indefinite short circuit. This protection scheme protects both the converter and the wiring from damage during fault conditions. The hiccup mode prevents excessive heating while providing automatic recovery when the fault is cleared.
For applications with potential output shorts, the built-in protection ensures safe operation and automatic recovery.
What is the load regulation of the EC4AW24-72S05?
The EC4AW24-72S05 provides excellent load regulation to maintain stable output voltage under varying load conditions: Typical load regulation is +/-0.5% from no load to full load; This means the 5V output varies by less than 25mV across the entire load range; Line regulation (input voltage variation) is typically +/-0.2%; Combined regulation is better than +/-1% under all operating conditions. The tight regulation is achieved through feedback control that continuously adjusts the switching to maintain output voltage. For applications requiring even tighter regulation: Add a linear post-regulator for the most sensitive circuits; Use remote sense if available on the specific model; Ensure adequate input capacitance to prevent input voltage droop under load transients. The excellent regulation makes this converter suitable for powering sensitive digital circuits and analog references.
For applications requiring extremely tight regulation, consider adding linear post-regulation for critical circuits.