Engineered to eliminate ground loops, suppress differential transients, and deliver ultra-regulated rails in demanding Bernese industrial settings.
In advanced industrial environments throughout the Canton of Bern—spanning precision watchmaking machinery in Biel/Bienne to heavy railway traction engineering in Thun and Burgdorf—electrical noise and fluctuating chassis potentials present continuous hazards to sensitive electronics. Non-isolated DC-DC regulators link the input negative return directly to the load ground. Under load switching or motor braking, parasitic circulating currents flow through common return conductors, introducing common-mode voltages that corrupt digital communication lines (such as CAN bus, EtherCAT, and RS485) or destroy CMOS circuitry.
Our Isolated DC-DC Converters incorporate high-permeability toroidal high-frequency planar transformers and optoisolated feedback loops. By establishing complete physical separation between the primary battery/bus system and secondary load circuits, our modules withstand transient voltages exceeding 1500V DC. This architecture halts earth ground loops, intercepts inductive kickback spikes caused by emergency solenoids, and shields microcontrollers, sensors, and telemetry units from severe voltage differentials.
Every converter manufactured at our facility utilizes high-grade silicon carbide (SiC) and planar MOSFET topologies, delivering efficiencies up to 93% while running inside thermally potted, IP67-rated aluminum heat-sink enclosures.
From alpine rail corridors to medical research facilities in the Swiss capital, our isolated power modules provide rugged reliability where equipment failure is not an option.
Bern serves as Switzerland's rail hub, headquarters to national operators and central transit corridors. Railway auxiliary power distribution lines (nominally 72V, 96V, or 110V DC) suffer violent voltage fluctuations according to EN 50155 standards, with surge interruptions plummeting to 0.6 × Un and spikes up to 1.4 × Un.
Our wide-input isolated DC-DC converters step down variable train line voltages to stable 24V or 12V DC auxiliary lines for onboard passenger information systems, train control units, GPS trackers, and emergency communications without risking reverse transients entering sensitive cab logic.
In the industrial zones of Biel/Bienne and the Bernese Jura, high-precision micro-tooling and automated horology workstations utilize dense arrays of servomotors, pneumatic controllers, and laser micrometer inspection heads.
Inductive feedback from multi-axis CNC spindles generates substantial electromagnetic emissions and common-mode earth spikes. Our isolated modules break these conductive noise loops, supplying clean 5V, 12V, or 24V DC to optical linear encoders and PLC interfaces, ensuring zero deviation during micrometer-tolerance machining cycles.
Off-grid photovoltaic and hydro installations in the Bernese Oberland operate under extreme climatic shifts (-30°C to +45°C). High static voltages from floating mountain solar arrays require robust galvanic decoupling before interfacing with local monitoring hardware.
Eltrum's fully potted, IP67-rated isolated buck-boost converters manage erratic 36V–90V solar-battery swings, providing uncompromised 12V or 24V rails for LoRaWAN environmental gateways, avalanche telemetry stations, and battery management system (BMS) logic processors.
How the Swiss Energy Strategy 2050 and Industrie 4.0 modernization are reshaping DC power procurement across Bern and Espace Mittelland.
Bern's municipal transport programs and central logistics hubs in Kirchberg and Langenthal are accelerating the shift toward 48V, 72V, and 96V LiFePO4 battery platforms. Automated Guided Vehicles (AGVs) demand isolated converters to tap high-voltage traction packs and step down cleanly to 12V/24V for LiDAR navigation, optical scanners, and safety interlocks.
Because traction batteries experience abrupt sag during acceleration and inductive overshoots during regenerative braking, procurement managers are transitioning from traditional buck modules to fully isolated wide-range topologies to safeguard onboard industrial PCs.
Hardware installed in Switzerland must comply with Federal Office of Communications (OFCOM) regulations and harmonized European standards, including EN 61000-6-2 (Immunity for Industrial Environments) and EN 61000-6-4 (Emissions). High-speed switching converters can pollute the electromagnetic spectrum if improperly shielded.
Eltrum integrates multi-stage LC filter circuits, internal common-mode chokes, and continuous aluminum Faraday cage shielding into every isolated converter. This guarantees low conductive emissions and high immunity against fast transients (EFT/Burst), drastically simplifying conformity assessment for Swiss OEMs.
Static power supplies are no longer sufficient for smart factories in Bern. Modern engineering projects specify smart converters equipped with RS485 (Modbus RTU) interfaces to monitor real-time operating parameters—such as input bus voltage, delivered load current, junction temperature, and fault status registers.
Our programmable buck-boost and isolated converter families empower engineers to implement predictive maintenance workflows, identifying thermal stress or battery degradation before an unscheduled line shutdown occurs.
Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates an advanced facility spanning up to 3,000 m² with 51–100 skilled engineers and assembly technicians. Unlike trading intermediaries, we control every critical phase of manufacturing: SMD high-speed pick-and-place lines, planar magnetic transformer winding, automated vacuum potting, and dynamic 100% full-load burn-in testing chambers.
We built our initial international reputation specifically on Isolated DC-DC Converters before expanding into waterproof LiFePO4 battery chargers and precision voltage regulators. Holding certified ISO 9001 quality management alongside full CE and RoHS compliance, we supply high-reliability modules to more than 130 countries worldwide.
Detailed engineering, commercial, and logistics answers for Swiss technical buyers, hardware designers, and supply chain managers.
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