EC6A21
6W isolated DC-DC converter with high current output for industrial and communication applications requiring reliable power conversion.
Product Overview
Description
The Cincon EC6A21 is a 6W isolated DC-DC converter designed for applications requiring higher power output in a compact package. This converter delivers up to 1200mA at 5V output, making it suitable for powering multiple loads or higher-current devices. The EC6A21 is available in two input voltage ranges: 9-18V for 12V battery systems and 18-36V for 24V industrial systems. This flexibility allows designers to select the appropriate model for their input voltage requirements. The converter outputs regulated 5V, 12V, 15V, or 24V with excellent load regulation. Available in both SIP8 and DIP8 packages, the EC6A21 offers flexibility for different PCB layouts. The SIP8 package (22.0 x 8.0 x 10.0 mm) is ideal for space-constrained automated assembly, while the DIP8 package (22.0 x 10.0 x 10.0 mm) provides easier manual soldering. Key features include 1500VDC isolation voltage for circuit protection, comprehensive protection functions (short circuit, overload, overvoltage), and -40°C to +85°C operating temperature range without derating. With an MTBF of 1.8 million hours and high efficiency of 89%, this converter offers outstanding reliability and low heat generation. The EC6A21 carries UL and CE certifications for global market access. As an authorized Cincon distributor, BeiLuo provides technical support for power system design and application guidance.
Product Series
EC6A
Primary Application
Industrial control systems
Key Features
- 6W isolated DC-DC conversion with 89% efficiency
- High current output up to 1200mA at 5V
- Dual input range options: 9-18V or 18-36V
- 1500VDC isolation for circuit protection
- Available in SIP8 and DIP8 package options
- Extended temperature range -40°C to +85°C
- Comprehensive protection: SCP, OLP, OVP
- 1.8 million hour MTBF for exceptional reliability
- UL and CE certified for global applications
Specifications
| Input Voltage Range | 9-18VDC or 18-36VDC (2:1 range) |
|---|---|
| Output Voltage | 5V / 12V / 15V / 24V (model dependent) |
| Output Current | Up to 1200mA (5V model) |
| Output Power | 6W maximum |
| Efficiency | 89% typical at full load |
| Isolation Voltage | 1500VDC (input to output) |
| Isolation Resistance | 1000MΩ minimum |
| Switching Frequency | 100kHz typical |
| Line Regulation | ±0.5% typical |
| Load Regulation | ±5% typical |
| Ripple and Noise | 75mVp-p maximum |
| Operating Temperature | -40°C to +85°C without derating |
| Storage Temperature | -55°C to +125°C |
| MTBF | 1,800,000 hours at 25°C (MIL-HDBK-217F) |
| Package | SIP8 (22.0 x 8.0 x 10.0 mm) or DIP8 (22.0 x 10.0 x 10.0 mm) |
| Weight | 3.2g typical |
| Safety Standards | UL60950-1, EN60950-1, CE |
| EMC Standards | EN55032 Class B, EN61000-4-2,3 |
Applications
Industrial control systems
Industrial automation and control
Communication equipment
Communication and interface
Distributed power architectures
Electronic system design
Test and measurement instruments
Data acquisition and conversion
Data acquisition systems
Data acquisition and conversion
Motor drive controls
Motor drive and control systems
Security systems
Electronic system design
Transportation electronics
Electronic system design
FAE Expert Insights
"The EC6A21 is our recommendation for applications requiring 4-6W output power. The high current capability (1200mA at 5V) makes it ideal for powering multiple loads or devices with higher current requirements. We've used this converter in industrial control systems, communication equipment, and data acquisition systems with excellent results. The 89% efficiency keeps heat generation low even at full load. Having both 9-18V and 18-36V input options is valuable - it allows us to stock both variants and support different system voltages. The SIP8 package is our preference for production designs due to its compact size. For any application requiring 5-6W with 12V or 24V input, this converter is an excellent choice."
High-power compact converter with excellent current capability
— BeiLuo FAE Team, BeiLuo
Frequently Asked Questions
What is the difference between EC6A21 (9-18V) and EC6A21 (18-36V)?
The EC6A21 is available in two input voltage variants: 9-18V input model: Designed for 12V battery and power systems; Nominal 12V, accepts 9V to 18V; Ideal for 12V automotive and battery applications. 18-36V input model: Designed for 24V industrial systems; Nominal 24V, accepts 18V to 36V; Ideal for industrial 24V bus systems. Both models have identical output specifications, efficiency, isolation, and package options. The only difference is the input voltage range. Select based on your system voltage: 12V systems → 9-18V model; 24V systems → 18-36V model. Contact our FAE team if you need assistance selecting the appropriate model.
Choose 9-18V model for 12V systems, 18-36V model for 24V systems. Contact us for selection assistance.
Can the EC6A21 handle pulsed loads?
The EC6A21 can handle moderate pulsed loads with considerations: Peak current capability: Can deliver 150% of rated current for short durations; Built-in overload protection activates at 150-200% of rating; Automatic recovery when overload removed. For pulsed load applications: Calculate RMS current over time; Ensure average power within 6W rating; Peak current should not exceed 150% of rating; Pulse duration should be brief (<100ms typical). Example: 5V output with 1A continuous + 2A peak for 50ms: RMS calculation shows acceptable if duty cycle <30%; Converter will handle pulses without shutdown. For severe pulsed loads: Add output capacitance (100-470µF) to supply peak current; Use external storage capacitor; Contact our FAE team for pulsed load analysis. The EC6A21 is suitable for motor drives, solenoids, and other moderate pulsed loads.
Calculate RMS power for pulsed loads. Add output capacitance for severe pulses. Contact us for analysis.
What is the startup time for EC6A21?
The EC6A21 startup characteristics: Startup time: 50-100ms typical from input application to stable output; Soft-start sequence limits inrush current; Output rises monotonically to regulation. For multiple converters: Startup is independent for each converter; No synchronization between units; Stagger startup by 20-50ms if input current limiting is concern. Coordinated startup: Use external sequencing circuit if required; Enable pins can be used for startup control; Power good signals indicate when output is stable. The startup time is suitable for most applications. For systems requiring faster startup, consider: Using lower power converter with faster response; Adding hold-up capacitor for continuous operation; Implementing backup power scheme. Contact our FAE team for startup sequencing design.
50-100ms typical startup. Use external sequencing if coordinated startup required. Contact us for design assistance.
How do I parallel EC6A21 converters for redundancy?
The EC6A21 does not support direct parallel connection for current sharing. For redundancy (not current sharing): Use OR-ing diodes to combine outputs; Each converter must be sized for full load; Provides backup if one converter fails. Redundancy configuration: Install two EC6A21 converters; Use Schottky diodes (e.g., SS34) to OR outputs; Each converter powers full load independently; If one fails, other maintains output. Considerations: Diode voltage drop (0.3-0.5V) reduces output voltage; Power dissipation in diodes (Pd = I × Vf); Select diodes rated for full load current; Ensure adequate heat sinking for diodes. For N+1 redundancy: Use N converters sized for full load; Add one additional converter; All outputs OR-ed together; System continues if any one fails. Contact our FAE team for redundancy design assistance.
Use OR-ing diodes for redundancy, not current sharing. Contact us for redundancy design.
What is the efficiency vs load curve for EC6A21?
The EC6A21 efficiency varies with load: Peak efficiency: 89% at 75-100% load; High efficiency maintained down to 50% load; Light load efficiency decreases gradually. Typical efficiency curve: 100% load: 89%; 75% load: 89% (peak); 50% load: 87%; 25% load: 84%; 10% load: 78%. Input voltage effect: Efficiency slightly lower at minimum input voltage; Efficiency slightly higher at nominal input voltage; Variation is typically 1-2% across input range. Temperature effect: Efficiency decreases slightly at high temperature; Typical decrease: 0.5-1% at 85°C vs 25°C. For power budget calculations: Use 85% efficiency for conservative estimate; Use 89% for typical operation at full load; Account for temperature if operating at high ambient. Contact our FAE team for detailed efficiency curves.
Use 85% for conservative calculations, 89% for typical full load. Contact us for detailed curves.