High-Efficiency Power Conversion Catalog
Engineered for high reliability, extreme thermal stability (-40°C to +85°C), and rugged aluminum die-cast IP65/IP68 potting, our power converters support high-duty automation and automotive engineering projects across Brno and the South Moravian innovation belt.
Smart 36V Lithium Charger 12V to 43.8V 13A Waterproof
- Input VoltageDC 12V (9V–16V)
- Output VoltageDC 43.8V @ 13A
- Efficiency≥ 94%
- ProtectionIP67 / UVP / OVP / OTP
1500W Synchronous Buck-Boost Converter (10–60V)
- Input Window10V – 60V DC
- Regulated Output12V / 24V / 28V / 48V
- TelemetryRS485 Modbus RTU
- Topology4-Switch Non-Inverting
10–44V to 12V 50A/60A Synchronous Voltage Stabilizer
- Nominal Output12V DC ± 1%
- Max Output Amp50A Continuous / 60A Peak
- HousingExtruded Aluminum IP68
- CoolingNatural Convection
8–40V to 13.8V 30A Industrial Step-Up/Down Converter
- Input Range8V – 40V Ultra-Wide
- Float Voltage13.8V Clean DC Output
- Power Density414W Continuous
- ApplicationRadio & Fleet Systems
18–75V to 24V 5A Galvanic Isolated DC-DC Module
- Galvanic Isolation1500V DC Min.
- Ripple & Noise< 35mVp-p
- ComplianceEN 61000-6-2 / CISPR 32
- Use CasePLC & Telecom Racks
600W IP65 AC-DC Smart LiFePO4 Battery Charger
- Mains Input90V – 264V AC Universal
- Voltage Options14.6V / 29.2V / 58.4V
- ProfileAutomatic 3-Stage CC/CV
- ProtectionReverse Polarity / OVP
24V to 12V 100A High-Current Transit Buck Converter
- Input Voltage18V – 35V DC
- Output Power12V DC @ 100A (1200W)
- Efficiency Peak96.5%
- SuitabilityHeavy Commercial & Rail
600W Sealed Multi-Chemistry Fleet Charger (12V–48V)
- Supported ChemistriesLiFePO4 / NMC / Lead-Acid
- Thermal Range-35°C to +75°C Ambient
- Vibration GradeIEC 60068-2-6 Compliant
- CertificatesCE / RoHS / ISO 9001
Non-Inverting Synchronous Buck-Boost Topology: Mitigating DC Bus Sag in Industrial Systems
Modern electrical architectures across Central European industrial machinery operate under dynamic, unforgiving load profiles. In applications where the primary DC bus voltage swings above, equal to, or significantly below the intended regulated rail—such as a nominal 24V or 48V battery bank experiencing severe alternator load dump, cranking droop (down to 8.5V), or regenerative braking voltage spikes (up to 58V)—conventional step-down (buck) or step-up (boost) topologies inevitably fail. Traditional buck converters enter a dropout stall when the input sags below the output, while basic boost topologies propagate destructive over-voltages through their freewheeling diodes during high-input surges.
Our industrial-grade DC-DC buck-boost converters leverage a sophisticated four-switch synchronous H-bridge topology controlled by high-speed dual-edge PWM modulation. Unlike noisy SEPIC (Single-Ended Primary-Inductor Converter) or lossy inverting topologies, the synchronous 4-switch architecture operates seamlessly through three distinctive operational modes: pure buck mode when \(V_{in} > V_{out}\), pure boost mode when \(V_{in} < V_{out}\), and interleaved synchronous buck-boost mode when \(V_{in} \approx V_{out}\). This intelligent mode transition eliminates harmonic commutation chatter, minimizing output voltage ripple to less than 30mV peak-to-peak even under instantaneous 100% step-load transients.
To withstand extreme duty cycles encountered in Brno's high-precision instrumentation facilities, railway lines, and agricultural equipment, every converter integrates automotive-grade planar magnetics, ultra-low ESR solid-state electrolytic capacitors, and AEC-Q200 qualified silicon carbide (SiC) or gallium nitride (GaN) switching stages. Potted inside hermetically sealed anodized aluminum enclosures with high thermal-conductivity polyurethane compound (dielectric strength >20 kV/mm), our units offer zero maintenance, IP68 environmental ingress sealing, and structural resistance to mechanical shock up to 50G in compliance with EN 61373 railway standards.
Field-Tested Applications Across Brno's Core Industries
Brno is widely recognized as the Silicon Valley of Central Europe and a world capital of precision optics, electron microscopy, and advanced transit infrastructure. Our export-grade DC-DC buck-boost power platforms are explicitly tailored to resolve the electrical conditioning bottlenecks of South Moravian engineering enterprises.
Electron Microscopy & Optoelectronics
Brno manufactures roughly one-third of the world's commercial electron microscopes (TEM/SEM). Our galvanically isolated buck-boost converters provide ultra-stable, ripple-free auxiliary power lines (5V, 12V, 24V) to vacuum pumps, beam deflection controllers, and optical sensors, eliminating EMI interference with high-precision electron trajectories.
DPMB Tram & Rail Traction Subsystems
Supporting Brno's urban transport operator (DPMB) and rail overhaul suppliers, our wide-input DC converters accept turbulent 24V or 110V auxiliary traction lines and output steady, protected 12V/24V power for passenger ticketing terminals, LED route indicators, onboard telematics, and digital radio transceivers.
Smart Warehousing & AGV Robotics
Surrounding the Brno-Tuřany Airport and D1 industrial zones (CTPark Modřice, GLP Brno), high-throughput automated guided vehicles (AGVs) depend on our buck-boost stabilizers to hold consistent 24V bus voltages across shifting 8S–16S LiFePO4 battery pack discharge curves, preventing controller reboots.
Moravian Agricultural & Heavy Electrification
Designed for South Moravia’s extensive agricultural machinery engineering, our IP68-sealed converters survive direct pressure washing, chemical exposure, and intense chassis shock on tractors, harvesters, and sprayers, regulating variable alternator outputs to sensitive GPS guidance units.
Off-Grid Solar PV & BESS Hybrid Microgrids
In off-grid vineyard stations, telecom towers, and remote environmental monitoring nodes throughout the Pálava and Moravian Karst hills, fluctuating solar panel voltages and shifting battery state-of-charge are stabilized into locked 12V/24V/48V system voltages without dropping load power.
Custom OEM Industrial Automation Cabinets
OEM cabinet builders and machine vision integrators in South Moravia rely on our chassis-mounted converters to step up or step down noisy plant floor 24V supply rails into isolated 5V, 12V, 19V, and 48V outputs for edge industrial PCs, PLCs, industrial Ethernet switches, and robotic arms.
Brno's Electrification Trends: The Transition to 48V Distributed Architecture
The manufacturing landscape of Brno, Vyškov, and Blansko is shifting rapidly from conventional 12V and 24V architectures to decentralized 48V DC bus topologies. As Czech mechanical fabricators adopt Industry 4.0 automation, AGVs, and mobile electric machinery, copper cable gauge limitations and thermal dissipation have become critical design constraints.
1. The 48V Low-Voltage EV & E-Mobility Mandate: In alignment with EU Green Deal directives and Czech national decarbonization policies, industrial machinery designers across the South Moravian region are migrating auxiliary subsystems to 48V lithium-iron-phosphate (LiFePO4) energy storage. Transmitting power at 48V reduces \(I^2R\) ohmic distribution losses by 75% compared to legacy 24V circuits, allowing equipment builders to deploy lighter wiring harnesses. However, peripheral subsystems—such as radar, lidar sensors, engine management units, and emergency telemetry—still strictly mandate stabilized 12.0V or 24.0V supplies. Our synchronous buck-boost converters bridge this voltage disparity with near-frictionless 96.5% thermal efficiency.
2. Resilience Against Sub-Zero Continental Winters: Central Europe experiences extreme continental temperature variations, swinging from -25°C in mid-winter to +38°C in high summer. Off-the-shelf commercial power modules frequently suffer startup oscillator freeze, core saturation failures, or capacitor ESR spikes under sub-zero conditions. Eltrum's military-grade potting materials and low-temperature silicon components guarantee instant cold-boot under full load at -40°C, providing the uninterrupted reliability demanded by municipal contractors and fleet operators across the Czech Republic.
3. Supply Chain Agility: Direct Manufacturer-to-Plant Delivery: European procurement teams in Brno frequently experience protracted 24-week delivery horizons and inflated markup structures when sourcing through domestic catalog brokerages. By establishing a direct OEM/ODM export relationship with our Shenzhen manufacturing center, Moravian purchasing directors secure pre-configured voltage calibrations, customized waterproof connector pigtails (Deutsch DT, Anderson SB50, Amphenol), and scheduled air-express logistics straight to Brno-Tuřany or Václav Havel Prague within 4 to 7 business days.
Technical Benchmark: DC-DC Architecture Comparison
Selecting the optimal power conversion topology ensures superior thermal management, zero nuisance trips, and reduced component footprint. Compare our key topologies below.
| Topology Architecture | Input Voltage Dynamics | Output Voltage Stability | Peak Efficiency | Galvanic Isolation | Ideal Application Scenario |
|---|---|---|---|---|---|
| 4-Switch Synchronous Buck-Boost Primary | 10V – 60V (Crosses Vout) | Locked 12V / 24V ±1% | 94.0% – 96.5% | Non-Isolated (Common Ground) | AGVs, Variable Alternators, Mobile Lithium Battery Banks |
| Synchronous Step-Down (Buck) High Amperage | Vin always > Vout + 3V | Fixed 5V / 12V / 24V | 95.0% – 97.2% | Non-Isolated | 24V/48V Bus Step-Down for Commercial Bus & Truck Consoles |
| Synchronous Step-Up (Boost) Step-Up | Vin always < Vout - 2V | Elevated 24V / 36V / 48V | 93.5% – 96.0% | Non-Isolated | 12V Starter Battery Raising to 48V LED Arrays, High-Torque Servos |
| Flyback / Forward Isolated Converter Isolated | 18V – 75V / 36V – 90V | Isolated 12V / 24V | 88.0% – 92.5% | 1500V – 3000V DC Galvanic | Telecom Transmission Racks, High-Voltage Traction Auxiliary, Medical |
| Intelligent DC-DC Battery Charger Multi-Stage | 9V – 36V / 18V – 90V | Custom 14.6V / 29.2V / 43.8V | 92.0% – 95.0% | Isolated & Non-Isolated | Dual-Battery Campers, LiFePO4 Overlanding, Fleet Service Packs |
Why Industrial Procurement Leaders in Brno Partner With Us
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates state-of-the-art SMT automation, transformer winding, and testing facilities certified under ISO 9001:2015. Our power modules safeguard mission-critical systems in over 130 countries.
100% 4-Hour Burn-In Testing
Every single power unit undergoes full-load thermal stress burn-in for 4 hours at 50°C in environmental testing chambers prior to packaging, ensuring our outgoing failure rate remains strictly below 0.05%.
Low Sample MOQ (From 5 Units)
We eliminate high minimum order quantity barriers for research institutes, universities, and prototype developers in Brno, offering 5-unit sample batches for rapid laboratory validation and field bench trials.
Full OEM / ODM Firmware Customization
Our dedicated R&D engineering team tailors proprietary CC/CV lithium charging profiles, CAN Bus / RS485 communication protocols, custom input cutoff thresholds, and specialized mechanical housings to match OEM blueprints.
European CE & RoHS Compliance
All exported models fulfill strict EU Electromagnetic Compatibility (EMC Directive 2014/30/EU) and Low Voltage (LVD Directive 2014/35/EU) regulations, supported by complete declaration dossiers for effortless customs clearance.
Hermetic Potting & Heat Dissipation
Our die-cast aluminum alloys feature integrated aerodynamic cooling fins and high thermal-index potting that blocks condensation, metal shavings, salt mist, and mechanical shock in harsh factory installations.
Direct DDP/FOB Fast Logistics
We provide full-service export documentation including Commercial Invoices, Packing Lists, Certificates of Origin, and express air freight forwarding directly to customer facilities in Brno and throughout Central Europe.
Frequently Asked Questions by Brno Engineers & Buyers
Key technical and logistics inquiries addressed by our senior application engineering team.
What are typical shipping lead times and delivery terms (Incoterms) for shipments to Brno?
Do your DC-DC converters comply with Czech and European Electromagnetic Compatibility (EMC) standards?
How does a non-inverting buck-boost converter behave during engine cranking or severe battery discharge?
Can we request customized output voltages, current limit set-points, and proprietary connectors?
What thermal derating rules should engineering teams apply for unventilated industrial enclosures?
What payment options and sample validation protocols are available for registered Czech entities?
Accelerate Your Power Electronics Project in Brno
Whether you require standard 12V/24V/48V off-the-shelf stock for prototype validation or customized multi-stage battery chargers for industrial production runs, our application engineering team delivers rapid technical evaluations and sample quotes within 24 hours.