Smart 36V LiFePO4 DC-DC Charger
- Input Window: 12V DC Nominal
- Output Voltage: 43.8V CC/CV
- Current Output: 13A Max
- Enclosure: Waterproof IP67
Factory Direct Selection
Featured Industrial Waterproof Converters & Chargers
Ruggedized aluminum enclosures with full polyurethane potting, exceeding IP65/IP67 mechanical ratings. Tested under real thermal loads for commercial EVs, marine systems, and off-grid power banks.
600W Multi-Stage Sealed Charger
- Mains Input: 90–264V AC
- Target Range: 14.6V–58.4V
- Power Capacity: 600W Continuous
- Standard: CE / RoHS Validated
1500W Buck-Boost with RS485
- Input Range: 10–60V Ultra-Wide
- Stabilized Out: 12V / 24V / 48V
- Interface: RS485 Modbus RTU
- Efficiency: Up to 96%
18-90V Galvanic Isolated Module
- Traction Input: 18–90V Wide DC
- Regulated Output: 12V @ 10A (120W)
- Isolation: 1.5kV DC Ground-Sep
- Protection: OVP, OCP, OTP
24V to 12V 100A Heavy Buck
- Input Source: 24V Automotive
- Output Capability: 12V DC @ 100A
- Heatsink: Extruded Aluminum
- Application: Commercial Fleet / Bus
12V to 48V Step-Up Boost 20A
- Input Window: 9–20V Low DC
- Bus Output: 48V Auxiliary Rail
- Peak Current: Up to 20A (960W)
- Sealing: Epoxy Encapsulated
400W Dual-Battery DC-DC Charger
- Engine Range: 10–36V DC Alternator
- Chemistry Mode: Lead-Acid & LiFePO4
- Profile: Intelligent 3-Stage CC/CV
- Vibration: MIL-STD-810G Class
72V to 24V E-Mobility Buck
- High-Rail In: 30–90V Traction Pack
- Logic Rail: 24V @ 20A Regulated
- Protection: Reverse Polarity / Short
- Thermal: -40°C to +85°C Ambience
Engineering Authority
Engineering Synthesis: Selecting Topologies for Severe Environments
In OEM power distribution design, choosing between buck, boost, non-isolated buck-boost, and galvanic isolation dictates system longevity, electromagnetic compatibility (EMC), and total conversion efficiency.
Step-Down (Buck) Architecture
Operates strictly where continuous maximum supply voltage remains higher than the required output load plus minimal drop-out margin (Vin,min > Vout + ΔV). Delivering synchronous rectification efficiencies up to 97%, our buck modules are primary choices for stepping down commercial truck 24V systems and EV battery banks (48V–72V) to 12V automotive body electronics.
Step-Up (Boost) Conversion
Applied when load voltage requirements exceed source bus voltage (Vin,max < Vout). Since input current scales exponentially as input voltage drops to satisfy constant power demand (Iin = Pout / (Vin × η)), our boost stages use heavy-gauge copper winding and oversized MOSFET switches to manage the highest thermal stress safely.
Buck-Boost Voltage Stabilization
Crucial for battery systems where state-of-charge swings dynamic rail voltages below and above nominal targets. A nominal 12V LiFePO4 bank swings between 10.0V (depleted under cold cranking) up to 14.6V (absorption charging). Non-inverting four-switch buck-boost topology guarantees precise 12.0V or 24.0V regulation throughout extreme dynamic input fluctuations.
| Converter Class | Typical Input Range | Nominal Output Rails | Isolation Level | Standard Eff. | Key Industrial Deployment |
|---|---|---|---|---|---|
| Synchronous Buck | 20V–36V / 30V–90V | 12V, 13.8V, 24V | Common Ground | 94% – 97% | Fleet Truck auxiliary, Agricultural GPS, Mining Lighting |
| High-Current Boost | 10V–15V / 18V–30V | 24V, 36V, 48V | Common Ground | 91% – 94% | Marine high-draw trolling motors, Audio Amplifiers, 48V Actuators |
| Dynamic Buck-Boost | 9V–40V / 10V–60V | 12V, 19V, 24V, 28V | Common Ground | 92% – 95% | Off-road RV auxiliary house banks, Solar PV variable feeds |
| Galvanic Isolated | 18V–36V / 36V–75V / 18V–90V | 5V, 12V, 24V | >1500V DC Isolation | 88% – 92% | Telecom -48V rails, Electric Forklift controllers, Sensitive Nav Systems |
Procurement Intelligence
Future Procurement Trends in Industrial DC Power Solutions
Strategic insights for OEM procurement managers, component engineers, and supply chain directors sourcing CE-certified power conversion systems for 2025–2030 programs.
Direct Factory SMT & In-House Tooling Integration
Global OEMs are moving away from traditional trading intermediaries to partner directly with manufacturing facilities holding proprietary Surface Mount Technology (SMT) and tooling capabilities. Bypassing broker tiers reduces defect turnaround cycles and lowers costs. Direct engineering collaboration enables rapid prototype adjustments to PCB traces, heat sink dimensions, and custom lead terminations within 10 to 14 days.
Shift to Wide-Input Multi-Platform Standardization
Supply chain leaders are cutting inventory SKUs by replacing narrow-voltage converters with ultra-wide input platforms (such as 18V–90V continuous). A single verified wide-input converter can service 24V material handling equipment, 48V electric golf carts, and 72V urban e-mobility fleets without redesigning wiring harnesses or changing bill of materials (BOM) logistics.
Traceable Lifecycle & Component Origin Auditing
With tightening international trade standards and compliance regulations, procurement teams require complete traceability for automotive-grade power MOSFETs, ceramic capacitors, and magnetic cores. Leading factory audits now focus on automated optical inspection (AOI), computerized full-load burn-in records, and verified RoHS substance declarations for European and North American customs clearance.
Technology Horizon
Technological Innovations in Waterproof Power Conversion
The transition toward electrification demands smaller, higher-density power converters that perform dependably in harsh environments without active cooling fans.
1. Wide Bandgap Semiconductors (GaN & SiC)
Gallium Nitride (GaN) and Silicon Carbide (SiC) switches are transforming modern power supply design. By operating at significantly higher switching frequencies (over 250kHz–500kHz), they reduce the required size of magnetic transformers and inductors. This increases continuous volumetric power density beyond 30W/in³ while cutting switching losses by more than 40%.
2. Advanced Thermal Potting & Hydrophobic Sealing
Standard room-temperature vulcanizing (RTV) silicones are giving way to high-conductivity polyurethane and ceramic-infused epoxy compounds. These materials achieve thermal conductivities above 1.5 W/m·K, filling microscopic voids around magnetic windings. This eliminates hot spots, improves thermal transfer directly to the extruded aluminum casing, and protects against shock, vibration, and moisture ingress.
3. Smart Telemetry Integration: CAN bus & RS485
Modern power converters are evolving from isolated passive bricks into intelligent, communicative subsystems. By incorporating standardized isolated RS485 (Modbus RTU) or CAN bus interfaces, our converters allow host vehicle engine control units (ECUs) and marine multi-function displays to track real-time rail voltages, draw currents, internal temperature thresholds, and cumulative operational run hours.
High Density Planar Magnetics
IP68 Liquid Submersion Proof
Zero-Voltage Switching (ZVS)
Modbus RS485 Telemetry
Automotive CISPR 25 EMC
Factory Infrastructure
Shenzhen Eltrum Electronic: Direct Factory Manufacturing Precision
Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates a vertically integrated production plant dedicated to engineering stable, industrial-grade power solutions for global Tier-1 applications.
500+
Standard Converter Models
130+
Countries Actively Served
3000m²
Advanced Manufacturing Plant
100%
Full-Load Burn-In Validated
Rigorous In-House Quality Assurance Architecture
Every DC-DC converter and battery charger undergoes comprehensive testing before packaging. Operating under an accredited ISO 9001 quality management framework, our manufacturing workflow integrates real-time automated optical inspection (AOI), in-circuit electronic analysis, automated multi-stage potting lines, and dynamic burn-in testing under full load conditions.
Our units comply with the latest European Union CE Directives (Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU) and meet environmental hazardous substance limits under RoHS 2011/65/EU.
- Comprehensive isolation breakdown testing verified up to 1.5kV AC / 2.0kV DC.
- Custom voltage output curves, specialized connectors, and buyer-label branding available.
- Direct technical support from experienced power supply design engineers.
Shenzhen Production Facility
Conveniently located in the Anle Industrial Zone, Shenzhen, supporting efficient global air and ocean freight dispatch.
Testing & QC Laboratories
Multi-channel load racks test transient responses, ripple factors, and thermal behavior across all operating cycles.
Finished Product Verification
Every unit is checked for potting density, enclosure seal integrity, and high-voltage dielectric isolation before dispatch.
Procurement Support
Frequently Asked Questions for Sourcing Managers
Clear, definitive technical and commercial answers to simplify OEM qualification, sample prototyping, and volume production.
What are the key technical differences between isolated and non-isolated DC-DC converters?
Non-isolated DC-DC converters share a common electrical ground plane between their input and output channels. They deliver high conversion efficiency (up to 96%–97%), smaller physical enclosures, and lower production costs, making them the standard choice for automotive, truck, and leisure vehicle power delivery.
Isolated DC-DC converters incorporate a high-frequency isolation transformer that completely breaks conductive loop connections between input and output return paths. This is essential for protecting delicate low-voltage controllers against ground loops, high common-mode noise, negative-ground telecommunications systems (-48V), and high-voltage traction batteries (where safety rules demand absolute battery isolation from vehicle chassis grounds).
How does your factory test and guarantee the IP67/IP68 waterproof rating?
Our waterproof conversion units use extruded or die-cast aluminum enclosures filled with vacuum-degassed, two-component thermally conductive polyurethane resin. This potting process eliminates internal air bubbles and micro-voids around critical electronic components.
Production samples undergo immersion water ingress tests under specified depth pressures alongside thermal shock cycles (-40°C to +85°C). This ensures that enclosure expansion and contraction will not crack the potting barrier or compromise the internal electronics, keeping moisture, salt spray, and vibration securely at bay.
What is the minimum order quantity (MOQ) and production turnaround for custom prototypes?
To support early-stage product engineering and laboratory verification, standard catalog items carry a low minimum order threshold of 5 units. High-power units (over 1000W) can be sampled starting at 1–2 units.
For custom ODM projects (such as modified voltage thresholds, specific CC/CV charging algorithms, custom cable harnesses, or private-label metal housings), initial prototypes are typically completed and dispatched for bench evaluation within 10 to 14 business days following final engineering drawing sign-off.
How does full encapsulation impact thermal derating under heavy, continuous loads?
While unpotted open-frame power units rely on moving air from cooling fans—which draw in dust, moisture, and road contaminants—fully potted converters transfer heat out conductively through the entire thermal encapsulation medium directly into the finned exterior aluminum chassis.
For sustained operation in unventilated or high-temperature ambient environments (such as engine bays or sealed equipment enclosures above +50°C), we recommend engineers derate the nominal continuous load by 20% to 30%. This prevents over-temperature thermal protection circuits from activating and ensures long-term component reliability.
Which payment terms and international freight trade terms (Incoterms) do you support?
We work with international OEM buyers under standard commercial payment terms including Telegraphic Transfer (T/T), PayPal for rapid sampling, and Escrow accounts in USD or EUR. Production orders typically follow a standard 30% deposit with 70% balance paid prior to dispatch.
Standard export terms include FOB Shenzhen, EXW factory, or full DAP/DDP air and ocean container logistics coordinated directly with your chosen freight forwarding partners.