Precision Engineered DC-DC Converters & Chargers
Engineered for mission-critical reliability across fluctuating input voltages. Every unit incorporates deep epoxy potting, aluminum alloy heat sink chasses, and automotive-grade transient suppression.
- Topology:Step-Up CC/CV Boost
- Input Voltage:DC 10V – 16V (12V Nominal)
- Charge Output:DC 43.8V · 13A (570W)
- Efficiency / Seal:95% · Hermetic IP68
- Input Range:DC 18V – 36V
- Regulated Output:12V DC · 85A / 100A (1200W)
- Protection:OVP, OCP, OTP & Reverse Polarity
- Chassis:Extruded Aluminum IP68
- Input Range:Wide 10V – 60V DC
- Output Rails:12V / 24V / 28V / 48V (Up to 1500W)
- Telemetry:Isolated RS485 Modbus RTU
- Target Sector:Industrial AgTech & Defense
- Isolation Barrier:1500VDC Galvanic Optocoupled
- Input Bandwidth:18V – 90V Continuous
- Output Power:12V @ 10A (120W Stable)
- Noise Suppression:EN 55032 Class B Compliant
- Input Capability:48V / 60V / 72V Traction Packs
- Output Rating:24V DC · 10A–20A Continuous
- Architecture:Synchronous Buck Switching
- Deployment:AGVs, Rail & Intralogistics
- Input Voltage:9V – 20V DC Range
- Output Voltage:48V Fixed (Up to 960W Peak)
- Enclosure:Cast Alloy Anti-Salt Mist IP68
- Application:Electric Thrusters & Marine Audio
- Input Range:10V – 36V DC Alternator
- Programmable Out:14.6V / 29.2V / 43.8V Multi-chem
- Euro 6 Ready:Smart Alternator Ignition Sense
- Format:Compact Engine-Bay Mountable
- Input Spectrum:Customized 8V – 120V Inputs
- Output Tolerance:±1% Precise Load Regulation
- Integration:Custom Wiring, Connectors & CAN
- Certification:CE / RoHS / ISO 9001 Batch Testing
Topology Optimization for Rugged DC Power Distribution
A technical guide for French electronic systems integrators, automotive procurement engineers, and naval system architects handling severe operating conditions.
Solving Thermal Throttling & Environmental Stress in Maritime and Heavy Fleet Applications
In power conversion, converting DC voltages in non-ventilated, high-humidity environments represents one of the harshest stress scenarios for switching MOSFETs and planar transformers. Standard off-the-shelf plastic converters fail due to moisture ingress through capillary wire action, internal condensation during cyclic thermal variations, and vibration-induced solder micro-fractures. At Shenzhen Eltrum Electronic Co., Ltd., our engineering methodology treats thermal dissipation and hermetic sealing as a single unified electro-mechanical discipline.
By vacuum-degassing high-thermal-conductivity organic polyurethane epoxy resin (rated up to 2.0 W/m·K) inside an ADC12 die-cast aluminum alloy shell, we eliminate internal air voids. This structural approach transfers heat directly from high-power dissipation junctions—specifically primary switches, secondary synchronous rectifiers, and high-frequency ferrite inductors—straight to the perimeter cooling fins. The resulting modules achieve continuous 100% duty-cycle load operation at ambient temperatures exceeding +50°C without requiring forced-air fan cooling.
The matrix below demonstrates the operational boundaries and performance tradeoffs when specifying converter topologies for European industrial and automotive electrical architectures:
| Circuit Topology | Typical Input Bandwidth | Regulated Outputs | Peak Efficiency | Galvanic Isolation | Optimal Deployment Field |
|---|---|---|---|---|---|
| Synchronous Buck | 18V – 36V / 30V – 90V | 5V, 12V, 13.8V, 24V | 95% – 96.5% | Non-Isolated (Common Ground) | French municipal electric buses, heavy trucks, intralogistics AGVs |
| Synchronous Boost | 9V – 16V / 18V – 32V | 24V, 28V, 36V, 48V | 94% – 96.0% | Non-Isolated | Marine bow thrusters, 48V mild hybrid superstructures, high-power LED arrays |
| 4-Switch Buck-Boost | 8V – 40V / 10V – 60V | 12V, 13.8V, 19V, 24V | 93% – 95.5% | Non-Isolated | Variable solar array harvesting, Euro 6 smart alternator voltage stabilizers |
| Flyback / Forward Push-Pull | 18V – 36V / 36V – 75V / 18V – 90V | 5V, 12V, 24V | 88% – 92.0% | 1500VDC Isolation Barrier | Telecom datacenters, railway signaling, positive-ground material handling |
Furthermore, managing Electromagnetic Compatibility (EMC) is mandatory for deployment in the European single market. Every Eltrum DC-DC platform integrates multi-stage pi-filters (π-filters) on both the input and output stages, paired with high-frequency surface-mount ceramic capacitors (MLCC) possessing ultra-low Equivalent Series Resistance (ESR). This suppresses high-frequency ripple below 30mVp-p, fully fulfilling EN 55032 Class B conducted emission and CISPR 25 Class 3/4 standards without requiring external shielding boxes.
Engineered for France's Core Industrial & Clean-Tech Sectors
From the naval shipyards of Brittany and Occitanie to electric commercial fleet retrofitting across the Île-de-France corridor, Eltrum supplies resilient power conversion equipment built for regional compliance.
Maritime & Yachting (Vendée & Côte d'Azur)
Commercial vessels, luxury yachts, and coastal patrol craft require dual-battery isolation and saltwater-resistant sealing. Our IP68 DC-DC battery chargers reliably charge 24V and 36V LiFePO4 house banks directly from 12V alternator feeds, safeguarding delicate onboard Raymarine or Simrad GPS, radar, and communication systems against surge-induced brownouts.
Utility Fleet Electrification & Euro 6 Vans
French urban logistics hubs (Paris, Lyon, Marseille) are enforcing Low Emission Zones (ZFE-m). Commercial fleet operators converting diesel transport into electric and dual-battery configurations utilize our 24V-to-12V 85A/100A buck modules to power refrigeration compressors, tail lifts, telematics trackers, and surveillance camera arrays with 96% energy conservation.
Agricultural Robotics & Autonomous AgTech
France remains the European Union's premier agricultural producer. Autonomous weeding robots, vineyard drones, and specialized smart sprayers powered by 48V or 72V traction battery banks depend on Eltrum IP67 sealed step-down converters to power delicate RTK GPS transceivers, LiDAR sensors, and servomotors across dusty, mud-soaked fields.
Decentralized Solar PV & Remote Telecom
Mountainous microgrid telecommunications in the French Alps and Pyrenees experience severe thermal swings. Our wide-input 18V–90V isolated power supplies decouple erratic high-voltage solar charge battery terminals from sensitive fiber relay electronics, delivering stable 5V, 12V, or 24V DC lines with 1500V galvanic isolation barrier security.
Off-Grid Camper Vans & Expedition Builds
The leisure caravan and four-wheel-drive overlanding market throughout France has rapidly transitioned toward high-capacity LiFePO4 cells. Eltrum's DC-DC battery-to-battery chargers provide precise multi-stage CC/CV charging curves, preventing alternator overheating while eliminating house battery undercharge scenarios common in leisure touring.
Intralogistics & Material Handling Equipment
Forklifts, scissor lifts, and Automated Guided Vehicles operating inside extensive logistics warehouses require clean 12V and 24V auxiliary lines stepped down directly from large 48V, 60V, or 80V traction battery packs. Complete galvanic isolation breaks ground loops and stops motor controller noise from polluting scanning and wireless networks.
Navigating France’s Energy Transition & Industrial Trends
The French market for power electronics is evolving under stringent ecological mandates and digital infrastructure expansions. Key macro-trends shaping buyer decisions include:
- The Rise of Lithium Iron Phosphate (LiFePO4): Across French recreational, municipal, and nautical builds, lead-acid batteries are being aggressively replaced with LiFePO4. This shift requires specialized multi-stage CC/CV DC-DC converters capable of precise 14.6V or 29.2V charge limits to avoid tripping internal BMS protection circuits.
- Decarbonized Urban Transport (Zones à Faibles Émissions): More than 40 French metropolitan areas have established low-emission zones. This accelerates municipal fleet hybridization and e-retrofits, boosting demand for compact, high-efficiency 48V/72V-to-12V buck converters for lighting, cabin climate control, and digital payment ticketing devices.
- Demand for Digital Communication & Telemetry: Industrial buyers increasingly require dynamic voltage adjustment and status monitoring via RS485 Modbus RTU or CAN bus communication protocols, integrating power conversion units directly into central vehicle control displays.
Why Tier-1 Engineers & Distributors Partner With Eltrum
Shenzhen Eltrum Electronic Co., Ltd. is an onsite-verified power manufacturer operating from a modern 3,000 m² Shenzhen facility, upholding the foundational tenet: Customer First, Best Service.
ISO 9001 & European Standards
Our entire operation follows an ISO 9001 certified quality management system. All converter and charger series strictly adhere to CE (LVD/EMC) directives and RoHS requirements, ensuring zero regulatory hurdles for customs clearance across France and the wider EU.
500+ Model Catalog & Rapid Customization
From buck, boost, and wide-input buck-boost stabilizers to high-voltage isolated modules (18–90V in) and 1000W IP65 chargers. We deliver rapid OEM/ODM adaptations including custom input/output voltages, special wire harness terminations, and private labeling.
Flexible MOQ (Starting from 5 Pcs)
To assist French hardware startups, specialized engineering teams, and OEM prototype trials, our standard catalog modules are available with a low minimum order quantity of just 5 units. High-power units are offered from 1–2 pieces before committing to volume production.
100% Full-Load Burn-In & Rigorous QC
Every manufactured unit undergoes automated SMT inspection, manual assembly validation, and a mandatory 100% 4-hour thermal soak burn-in test under high-stress operating conditions prior to sealing, ensuring a field failure rate of less than 0.18%.
Proven International Export Logistics
With established logistics routes serving 130+ nations across North America, Europe, Australia, and Asia, our international sales department handles multimodal air and ocean freight (FOB, CIF, DDP) directly to French ports (Le Havre, Marseille) and airports (CDG).
Direct Bilingual Engineering Support
Collaborate directly with senior power supply design engineers. We review schematic interfaces, calculate inrush loads, analyze transient line spikes, and provide comprehensive customized circuit schematics within 24 hours.
Frequently Asked Questions by French Procurement Teams
Comprehensive engineering, regulatory, and commercial answers for purchasing managers and design engineers.