Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A Waterproof
- Topology: Step-Up Boost CC/CV
- Input / Output: 12V DC / 43.8V 13A
- Protection: IP67 Fully Potted
- Target: EV, Camper Vans, E-Bikes
Industrial Hardware Portfolio
High-Efficiency Conversion Modules & Intelligent Chargers
Engineered to mitigate electrical sag, ground-loop transients, and severe thermal stresses across industrial and harsh vehicular environments.
1500W Wide-Input Buck-Boost Converter with RS485 Bus
- Input Range: 10V – 60V Continuous
- Regulated Output: 12V / 24V / 48V Stable
- Telemetry: RS485 / Modbus Protocol
- Thermal Class: Die-cast Fin Convection
Isolated Telecom & Industrial DC-DC Converter 18–75V to 24V
- Isolation: 1500VDC Galvanic Barrier
- Rated Power: 120W Cont. Output
- Ground Architecture: Independent Floating Loop
- Application: Telecom Racks & AGV Fleets
Heavy-Duty Step-Down Buck Converter 24V to 12V (85A–100A)
- Efficiency: Up to 96% Synchronous
- Peak Capacity: 1200W Peak Transient
- Enclosure: Sealed Anodized Aluminum
- Ideal For: Commercial Fleet Electrics
600W Waterproof AC to DC Lithium / LiFePO4 Fast Charger
- Input Voltage: 90V – 264V AC Wide Band
- Output Curve: 14.6V / 29.2V / 58.4V CC/CV
- Sealing Grade: IP65 Ingress Certified
- Connectors: Anderson / Marine Grade Rings
400W Smart Battery-to-Battery Charger for RV & Marine
- Alternator Safety: Smart Alternator Compatible
- Input Range: 10V – 36V DC Active
- LiFePO4 Curve: Multi-stage Automatic Wakeup
- Vibration Spec: Mil-STD 810G Impact Rated
Isolated DC-DC Regulator 18–90V Input to 12V 10A
- Voltage Span: 5:1 Ultra-Wide DC Input
- Continuous Load: 120W Constant Delivery
- EMI / EMC: EN55032 Class B Filtering
- Deployment: Forklifts & Mining Vehicles
72V / 60V / 48V to 24V 20A Synchronous Buck Converter
- Input Window: 30V – 90V Continuous Rail
- Output Power: 480W Steady State
- Synchronous FET: Ultra-Low RDS(on) Switches
- Usage: Golf Carts, Light Traction, AGVs
500+
Proven Power Topologies
130+
Export Destination Countries
3,000m²
State-Of-The-Art SMT Facility
5 pcs
Flexible Evaluation MOQs
Engineering Intelligence & Supply Chain Dynamics
The Evolution of Switching Power Conversion: A Technical Roadmap
The global architecture of power conversion is encountering radical disruption driven by the rapid transition to distributed energy resources (DER), high-voltage traction batteries, and high-density industrial internet-of-things (IIoT) edge nodes. Modern switching power supplies (SMPS) are no longer isolated commodities; they function as precision energy management systems responsible for minimizing thermal loss, eliminating circulating ground currents, and preserving battery lifecycle economics.
As engineering specifications migrate from standard silicon planar power MOSFETs to wide bandgap (WBG) semiconductors like Gallium Nitride (GaN) and Silicon Carbide (SiC), thermal boundaries are expanding. This technical evolution allows Shenzhen Eltrum Electronic Co., Ltd. to compress magnetics volume by over 40% while unlocking operational efficiencies approaching 97%.
1. Wide Bandgap (SiC/GaN) Integration
By switching frequencies above 250kHz without excessive junction switching losses, modern topologies dramatically reduce inductive element weight and achieve higher power densities. This transition is essential for autonomous mobile robots (AMRs) and compact electric utility vehicles.
2. High-Amperage Buck-Boost Regulation
With battery banks continuously fluctuating between discharge thresholds and rapid charge absorption stages, static buck regulators fail. Dynamic buck-boost circuits maintain tight voltage envelopes across fluctuating busbars without triggering UVLO/OVP shutdowns.
3. Digital Telemetry & RS485 Buses
Legacy analog-only power supplies lack operational visibility. Enterprise systems now demand real-time telemetry over RS485 Modbus or CAN networks to monitor ambient operating temperatures, instantaneous ripple voltages, and dynamic output currents.
4. Galvanic Ground Separation
Ground loops cause erratic sensor behavior and communication faults in large 48V–72V mobile platforms. High-potential galvanic barriers isolate harsh engine transients, motor PWM noise, and traction surges from sensitive digital control electronics.
5. Harsh-Environment Encapsulation
Outdoor renewable setups, marine crafts, and open agricultural vehicles demand vacuum-injected polyurethane potting rated to IP67/IP68. Fully sealed assemblies safeguard sensitive magnetics and SMT pads from salt spray, condensing humidity, and vibration fatigue.
6. Future Procurement Strategies (2025–2030)
Procurement teams are moving away from multi-tiered supply chains toward integrated design manufacturers capable of modifying core topologies at the board layout level. Direct factory calibration reduces procurement cycles, simplifies compliance validation, and lowers total cost of ownership (TCO).
Enterprise Manufacturing Strengths
Direct Factory Engineering & Certified Compliance
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. specializes in custom power module design, step-down converters, and battery charging solutions. Our onsite-verified factory hosts comprehensive SMT, precision transformer winding, epoxy resin encapsulation, and high-temp burn-in testing bays.
- ISO 9001:2015 Certified Architecture: Documented quality control across all production processes, from raw wafer inspection to final packaging.
- Custom Voltage & Chemistry Profiles: Rapid board adaptations for non-standard DC spans (such as 18–90V, 30–90V), custom terminal blocks, and custom multi-stage LiFePO4 curves.
- Full Regulatory Compliance: Models engineered to conform strictly with CE, RoHS, and international emission thresholds.
- Agile B2B Logistics: Low 5-unit sample MOQs for rapid field validation, flexible EXW/FOB shipping terms, and secure multi-currency settlements (USD, EUR, CNY).
Technical Clarifications
Frequently Asked Questions by Procurement & System Engineers
Practical guidance regarding thermal derating, isolation requirements, and dual-battery integrations.
What is the minimum evaluation order quantity for Eltrum power supplies?
Standard production catalog items, including buck, boost, and isolated modules, feature a low sample evaluation MOQ of just 5 units. This allows engineering teams to validate circuit parameters and perform field testing before placing volume orders.
When should our engineers specify a Buck-Boost topology over a standard Buck?
Select a buck-boost configuration whenever the dynamic source voltage crosses your desired operating voltage. For example, a nominal 12V LiFePO4 bank will drop to ~10V under high discharge and rise to 14.6V during charging. A buck converter fails when the input drops near or below the output, whereas a buck-boost module maintains steady regulation across the entire curve.
How do isolated DC-DC converters safeguard vehicle and industrial controllers?
Isolated converters use internal magnetic coupling transformers to physically separate input and output ground paths. This breaks destructive ground loops, eliminates common-mode electrical noise, and prevents traction motor spikes from entering sensitive PLCs, microcontrollers, and communication hubs.
Can a DC-to-DC charger protect commercial alternators from LiFePO4 loads?
Yes. Lithium Iron Phosphate batteries have extremely low internal impedance and will pull maximum current from an alternator, often leading to stator overheating at idle. Our DC-DC battery chargers actively limit input draw while delivering an exact multi-stage CC/CV charging curve tailored to your secondary bank.
What derating parameters should be applied in enclosed high-heat installations?
In unventilated enclosures or ambient environments exceeding 50°C, we recommend derating continuous power draw by 20% to 30% below nameplate limits. For inductive loads with high initial inrush currents (such as motors and compressors), size the peak rating at 3× to 5× steady-state requirements.
What customization options (OEM/ODM) are supported for buyer-label programs?
We offer end-to-end OEM/ODM support, including custom enclosure designs, tailored input/output voltage and current ratings, integrated RS485 communication protocols, specialized IP68 connectors, and private labeling with your custom packaging.
Connect Directly with Power Design Specialists
Need custom voltage rails, specialized potting for marine equipment, or a reliable production partner for high-volume orders? Contact our Shenzhen engineering team today for quick datasheets and project quotes.