EC2A11
2W isolated DC-DC converter with 2:1 input range and compact SIP7 package for space-constrained applications.
Product Overview
Description
The Cincon EC2A11 is a high-efficiency 2W isolated DC-DC converter designed for cost-sensitive, space-constrained applications. This compact converter features a 2:1 wide input voltage range, accommodating 5V (4.5-5.5V), 12V (9-18V), 24V (18-36V), or 48V (36-72V) input systems depending on the model variant. The converter outputs regulated 3.3V, 5V, 9V, 12V, 15V, or 24V with up to 400mA current capability (at 5V output), making it suitable for powering microcontrollers, sensors, and communication interfaces. The SIP7 package (19.5 x 7.0 x 10.0 mm) occupies minimal PCB space while providing through-hole mounting stability. Key features include 1000VDC isolation voltage for basic circuit protection, continuous short circuit protection with automatic recovery, and overload protection at 150% of rated load. The EC2A11 operates reliably across an extended temperature range of -40°C to +85°C without derating, making it ideal for industrial automation, instrumentation, and outdoor applications. With an exceptional MTBF of 2 million hours and high efficiency of 85%, this converter offers outstanding reliability and low power dissipation. The EC2A11 carries UL and CE certifications for global market access. As an authorized Cincon distributor, BeiLuo provides technical support and application guidance for integrating this converter into your designs.
Product Series
EC2A
Primary Application
Industrial automation and control systems
Key Features
- 2W isolated DC-DC conversion with high efficiency
- 2:1 wide input range for flexible power source compatibility
- Compact SIP7 package saves PCB space
- 1000VDC isolation for circuit protection
- Extended temperature range -40°C to +85°C
- Continuous short circuit protection with auto-recovery
- Overload protection at 150% rated load
- 2 million hour MTBF for exceptional reliability
- UL and CE certified for global applications
Specifications
| Input Voltage Range | 4.5-5.5V / 9-18V / 18-36V / 36-72V (model dependent) |
|---|---|
| Output Voltage | 3.3V / 5V / 9V / 12V / 15V / 24V (model dependent) |
| Output Current | Up to 400mA (5V model) |
| Output Power | 2W maximum |
| Efficiency | 85% typical at full load |
| Isolation Voltage | 1000VDC (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 | 2,000,000 hours at 25°C (MIL-HDBK-217F) |
| Package | SIP7 (19.5 x 7.0 x 10.0 mm) |
| Weight | 2.5g typical |
| Safety Standards | UL60950-1, EN60950-1, CE |
| EMC Standards | EN55032 Class B, EN61000-4-2,3 |
Applications
Industrial automation and control systems
Industrial automation and control
Process control instrumentation
Industrial automation and control
Data acquisition systems
Data acquisition and conversion
Communication interfaces
Communication and interface
Microcontroller power supplies
Industrial automation and control
Sensor and transducer power
Sensor signal conditioning
Test and measurement equipment
Data acquisition and conversion
Embedded systems
Electronic system design
FAE Expert Insights
"The EC2A11 is my go-to recommendation for low-power isolated DC-DC conversion in space-constrained industrial applications. The SIP7 package is remarkably compact - I've used it in designs where PCB real estate was at a premium. The 85% efficiency is excellent for this power level and package size. I particularly appreciate the -40°C to +85°C operating range without derating - many competitors require derating above 70°C. The 2 million hour MTBF gives confidence for critical applications. For cost-sensitive industrial projects requiring 2W or less, this converter offers the best balance of performance, size, and price. I recommend adding input and output capacitors (4.7µF ceramic) close to the pins for optimal ripple performance. The 3-year warranty and Cincon's quality reputation provide peace of mind for production designs."
I highly recommend the EC2A11 for its proven reliability.
— Senior FAE Team, BeiLuo
Frequently Asked Questions
What is the pinout of the EC2A11 SIP7 package?
The EC2A11 SIP7 package has the following pinout: Pin 1: +Vin (Input positive); Pin 2: -Vin (Input negative/ground); Pin 3: No connection; Pin 4: -Vout (Output negative); Pin 5: +Vout (Output positive); Pins 6-7: No connection. The pin spacing is 2.54mm (0.1 inch) standard pitch. The converter can be mounted vertically or horizontally depending on space constraints. For vertical mounting, ensure adequate clearance for airflow. For horizontal mounting, the package height is 10mm. Always observe correct polarity - reverse polarity protection is not included on all models. Refer to the datasheet mechanical drawing for exact dimensions and recommended PCB layout.
Follow datasheet pinout for PCB layout. Use recommended copper widths for current capacity. Contact us for layout review.
What external components are required for the EC2A11?
The EC2A11 requires minimal external components for operation: Input capacitor: 4.7-10µF ceramic capacitor close to input pins for stability and ripple reduction; Output capacitor: 4.7-10µF ceramic capacitor for output ripple filtering. These capacitors are recommended but not strictly required for operation - the converter will work without them but with higher ripple. For applications with long input leads (>100mm), increase input capacitance to 22µF. For very low ripple requirements (<50mV), add an LC filter on the output. No external inductors, diodes, or other components are needed. The converter is a complete solution with internal switching controller, MOSFETs, transformer, and rectifier.
Use 4.7µF ceramic capacitors on input and output. Increase for long leads or low ripple requirements. Contact us for filter design.
Can I parallel multiple EC2A11 converters for higher power?
The EC2A11 does not support direct parallel operation for current sharing. The units lack built-in current sharing circuitry, so connecting outputs in parallel will result in uneven current distribution. For applications requiring more than 2W: Use a single higher power converter (EC3A for 3W, EC4A for 4W, EC6A for 6W); Use multiple converters powering separate loads; For redundancy (not current sharing), use isolation diodes to OR outputs together, with each converter sized for full load. When paralleling for redundancy, ensure both converters have identical output voltages (within 0.1V) to prevent back-feeding. For new designs, select appropriately-sized single converters rather than paralleling. Contact our FAE team for high-power or redundant DC-DC system design.
Use single higher-power converter instead of paralleling. Contact us for redundancy design with isolation diodes.
What is the startup time of the EC2A11?
The EC2A11 has a typical startup time of 50-100ms from input voltage application to stable output voltage. This includes the internal soft-start sequence that limits inrush current during startup. The soft-start prevents excessive current draw from the input source and reduces stress on internal components. For applications requiring faster startup, the EC2A11 is among the fastest in its class. If coordinated startup is needed for multiple converters, external sequencing circuits can be used. The startup time is relatively constant across input voltage and load conditions. For systems requiring specific power-up sequencing, allow 100ms minimum between enabling different converters. Contact our FAE team for startup sequencing design assistance.
Allow 100ms for startup in system design. Use external sequencing if coordinated startup required. Contact us for sequencing circuits.
How do I calculate the MTBF for my application?
The EC2A11 has a rated MTBF of 2,000,000 hours at 25°C ambient per MIL-HDBK-217F. However, actual MTBF depends on operating conditions: Temperature: MTBF decreases approximately 50% for every 10°C increase above 25°C; At 45°C, MTBF ≈ 500,000 hours; At 65°C, MTBF ≈ 125,000 hours. Load: Operating at 100% load vs 50% load reduces MTBF by approximately 30%. Environment: Ground benign conditions assumed. Harsh environments (vibration, humidity) reduce MTBF. To estimate your application MTBF: Start with 2,000,000 hours at 25°C; Apply temperature derating based on your ambient; Apply load derating if operating below 100%; Consider environmental factors. For critical applications, contact our FAE team for detailed reliability analysis.
Use 2M hours at 25°C as baseline. Apply derating for temperature and load. Contact us for application-specific MTBF calculation.