Certified modular power units engineered for harsh industrial environments, railway systems, medical compliance, and automation infrastructure across Europe.
In contemporary industrial electronics, microgrids, automotive manufacturing, and rail transport systems, galvanic isolation represents the fundamental line of defense against destructive common-mode noise, high-voltage ground surges, and earth loop circulating currents. An isolated DC-DC converter physically separates the input power circuit from the output load circuit using high-frequency magnetic coupling (transformers) or optoelectronic feedback mechanisms, ensuring zero direct electrical conduction between grounds.
As a premier European manufacturer operating from strategic industrial hubs in Bulgaria, our factory designs board-mount, chassis-mount, and DIN-rail isolated converter platforms spanning from sub-watt signal isolators (0.25W) up to high-density kilowatt power supply units. Galvanic isolation ratings are engineered to strictly adhere to international standards, providing continuous isolation voltages of 1500 VDC, 3000 VDC, up to 6000 VDC (or 2xMOPP medical grade).
Our engineering architecture implements high-frequency pulse-width modulation (PWM) combined with soft-switching resonant topologies (such as LLC resonant converters) to minimize switching losses and maximize power density. The structural choices depend on power envelope and dynamic load requirements:
Rigorous hi-pot isolation testing up to 6kVDC guarantees immune operation during industrial voltage surges and extreme electrostatic discharge (ESD).
Ultra-wide input ranges (2:1 and 4:1, covering 9-36VDC, 18-75VDC, 40-160VDC) compensate for severe battery droop and transient line surges.
Encapsulated with thermally conductive potting compounds, enabling full-power operation from -40°C to +85°C ambient temperatures without derating.
Over the past decade, Bulgaria has rapidly emerged as a dominant high-tech electronics manufacturing and export corridor within the European Union. Supported by a robust engineering heritage in electrical machinery, advanced mechatronics, and software development, the regional industrial ecosystems of Sofia, Plovdiv, Ruse, and Varna host critical component manufacturing for automotive OEMs, renewable energy microgrids, and industrial automation networks.
Operating as a key localized factory and exporter in Bulgaria offers immense strategic advantages for EU and global purchasing directors who demand shortened lead times, zero EU customs barriers, robust intellectual property protection, and full traceability. Compared to East Asian sourcing models vulnerable to maritime freight disruptions and geopolitical bottlenecks, our Bulgarian facility provides steady buffer stock, fast prototyping turnarounds, and agile OEM custom modification programs.
Procurement demands across the EU are shifting toward elevated environmental compliance, long product life cycles, and extreme energy efficiency under the EU Green Deal mandates. Modern isolated converters supplied out of Bulgaria must comply with stringent directives:
Our isolated DC-DC power converters and AC-DC switching power supplies are actively integrated into mission-critical infrastructure projects throughout Southeastern Europe and the broader EU market. The following field scenarios illustrate the technical necessity of high isolation power modules:
In high-voltage power substations across the Bulgarian energy grid (e.g., Maritsa Iztok energy complex and regional photovoltaic parks), switching transients and lightning strikes induce massive electromagnetic interference (EMI) and ground potential rises. Our 3000 VDC isolated DIN rail and PCB power modules power smart RTUs (Remote Terminal Units), RS485 communication gateways, and grid telemetry units. By galvanically isolating the sensitive controller logic from the noisy switchgear supply, equipment failure caused by ground loops is 100% mitigated.
Modernization of the Balkan rail corridor under the Trans-European Transport Network (TEN-T) requires power conversion units capable of enduring extreme battery supply variations (nominal 24V, 48V, 72V, 110V DC) and aggressive mechanical shock. Our EN 50155-compliant 4:1 wide input isolated converters feed train control computers, passenger Wi-Fi routers, and emergency LED lighting, maintaining seamless output regulation even during cranking voltage dips down to 14VDC.
The rapidly growing automotive assembly plants within the Plovdiv Economic Zone depend on automated guided vehicles (AGVs) and robotic arm controllers. These systems utilize our encapsulated DC-DC converters to supply clean 12V and 24V bus voltages directly from unregulated battery packs, effectively filtering out inductive spikes generated by high-torque DC motor drives.
Medical tech developers in Sofia utilize our specialized 2xMOPP certified isolated DC-DC modules for cardiac monitors, ultrasound units, and laboratory diagnostic tools. With reinforced isolation barriers capable of withstanding 4000 VAC and maintaining ultra-low coupling capacitance, equipment builders achieve instant compliance with CE medical device regulations.
Selecting the optimal isolated converter requires evaluating input range flexibility, isolation dielectric rating, power density, and safety approvals. Use the comparative specification matrix below to identify the baseline platform for your design-in process:
| Converter Series Class | Input Voltage Range | Isolation Rating | Efficiency | Operating Temp | Key Target Application |
|---|---|---|---|---|---|
| AICC-SIP-1W/6W | 5, 12, 24 VDC (±10%) | 1,500 VDC – 3,000 VDC | 81% – 86% | -40°C to +105°C | Board-level sensor isolation, RS485/CAN transceivers |
| AICC-W20-Wide | 9-36 VDC / 18-75 VDC (4:1) | 3,000 VDC | 88% – 91% | -40°C to +85°C | Industrial IoT gateways, telemetry cabinets |
| AICC-RAIL-150W | 40-160 VDC (4:1 Ultra Wide) | 3,000 VAC / 4,242 VDC | 92.5% | -40°C to +85°C | EN 50155 Railway rolling stock & trackside signals |
| AICC-MED-10W | 4.5-9 VDC / 18-36 VDC (2:1) | 5,000 VAC (2xMOPP) | 89% | -25°C to +70°C | IEC 60601-1 patient-connected diagnostic instruments |
| AICC-DIN-480W | 90-264 VAC / 127-370 VDC | 3,000 VAC (Input-Output) | 94.0% | -30°C to +70°C | Industrial automation PLCs, motor control cabinets |
Note: Custom output voltage trims (e.g., 3.3V, 5V, 12V, 15V, ±12V, ±15V, 24V, 48V VDC), non-standard pinouts, and custom conformal coating options are available upon factory request.
When partnering with our Bulgarian manufacturing enterprise, client organizations gain direct access to advanced electronic engineering resources and flexible OEM/ODM contract manufacturing services. Unlike commercial trading agencies, our factory operates fully automated surface-mount technology (SMT) lines, high-speed pick-and-place systems, automated optical inspection (AOI), and automated transformer winding facilities.
Every single power converter undergoes full-load elevated temperature burn-in screening prior to packaging, driving operational field failure rates down to <10 PPM.
Modify mechanical footprints, connector harnesses, output trimming ranges, or thermal potting compounds on pre-certified module platforms to save up to 70% in qualification costs.
We guarantee minimum 10-to-15 year component availability programs with formal Product Change Notifications (PCN) and Last-Time-Buy (LTB) options for long-term industrial projects.
An isolated DC-DC converter utilizes an internal magnetic transformer to completely break direct electrical connections between the input ground and output ground. This galvanic barrier (typically rated between 1.5kVDC and 6kVDC) protects sensitive microprocessors from damaging voltage spikes, breaks noise ground loops, and enables negative rail generation or floating output configurations. Non-isolated converters (switching regulators) share a common ground wire, offering high power density but zero protection against high-voltage ground potential differentials.
Sourcing directly from our Bulgarian production plant provides seamless duty-free intra-EU logistics under European Union trade laws, significantly shorter transit times (2-4 days across Europe via road freight), full GDPR/IP security, and transparent supply chain origin. Furthermore, direct engineering communication with our Sofia-based application support team eliminates timezone friction and language barriers during critical qualification stages.
Depending on the module series, units are supplied with complete CB scheme reports, CE declarations of conformity, UKCA marks, and compliance documentation for UL/IEC/EN 62368-1 (ITE equipment), EN 50155 / EN 45545-2 (railway rolling stock), and IEC 60601-1 3rd edition (medical 2xMOPP). Comprehensive EMC test data (EN 55032 Class A/B conducted and radiated emissions) is readily available upon request.
Yes. Our "Modified Standard Program" allows OEM design teams to request customized pinouts, specific mechanical footprint adjustments, alternate potting resins (such as military-grade silicone or polyurethane), special output voltage trims (e.g., 48VDC down to 3.6VDC), and pre-attached wiring harnesses without initiating a complete from-scratch safety certification cycle.
Battery-powered systems experience drastic voltage drift. A standard 24V industrial battery can swing from 30V during charging down to 18V under heavy load. A 2:1 input range converter (e.g., 18-36VDC) handles standard variations, whereas a 4:1 wide input range converter (e.g., 9-36VDC or 18-75VDC) maintains a rock-solid, regulated output voltage through severe voltage dips, cold-cranking events, and unexpected supply surges.
Standard catalog samples are dispatched from our European distribution hub within 24 to 48 hours for qualification and layout testing. For standard production runs, flexible MOQ options start at 50 units, supporting early-stage pilot production through high-volume contract manufacturing.
Partner with Bulgaria’s leading isolated DC-DC converter exporter. Request full technical datasheets, CAD 3D models, application notes, or evaluation samples directly from our engineering team.
