Precision Isolated Power Supplies & Industrial Charging Modules
Explore our top-tier galvanically isolated converters, buck-boost voltage regulators, and advanced waterproof battery charging systems engineered to eliminate ground loops, suppress high-voltage transients, and maintain ultra-clean DC rails.
Smart 36V Lithium Battery Charger DC 12V to DC 43.8V 13A
- Input Voltage: DC 10V–16V (12V Nom)
- Output Voltage: DC 43.8V • 13A
- Enclosure: IP67 Full Epoxy Potting
- Target Chem: LiFePO4 / Li-Ion Packs
18–75V to 24V 5A Isolated DC-DC Converter 120W
- Input Range: 18–36V / 36–75V DC
- Output Rating: 24V • 5A • 120W
- Isolation: 1500V DC Breakdown
- Architecture: Synchronous Flyback
36–75V to 24V 5A Industrial Grade Isolated Buck
- Input Bus: 36V / 48V / 60V / 72V
- Output Rail: 24V DC • 120W Max
- Ripple / Noise: < 50mVp-p Clean Rail
- Operating Temp: -40°C to +85°C
Ultra-Wide 18–90V to 12V 10A Isolated Converter
- Input Span: 18V–90V Continuous
- Output Power: 12V • 10A • 120W
- Grounding: Fully Floating I/O
- Protection: OVP, OCP, OTP, Reverse
36–75V to 12V 10A Telecom & Traction Isolated Power
- Input Voltage: 36V / 48V / 60V / 72V
- Regulated Out: 12V DC • 120W
- EMC Standard: EN55032 / CISPR22
- Efficiency: Up to 93.5% Typical
18–75V to 5V 20A 100W Heavy-Duty Isolated Module
- Input Bus: 24V / 48V Telecom Rails
- Logic Output: 5V DC • 20A Constant
- Heatsinking: Integrated Die-Cast Fin
- Certifications: CE / RoHS / ISO 9001
18–36V to 5V 20A Isolated Low-Noise Controller
- Input Rating: 18–36V DC (24V Battery)
- Output Rail: 5V • 20A Clean Bus
- Ground Break: Full Galvanic Barrier
- Shock/Vibe: Heavy Transit Qualified
1500W Buck-Boost Converter 10–60V with RS485 Bus
- Input Range: 10–60V DC Wide-Window
- Config Output: 12V / 24V / 28V / 48V
- Control Bus: RS485 Telemetry • PWM
- Continuous: 1500W Sustained
Why Galvanic Isolation is Paramount in Washington DC Installations
In mission-critical federal buildings, defense C4ISR test beds, WMATA electrified rail transit lines, and Northern Virginia hyper-scale data hubs, common ground lines introduce destructive earth potential loops, common-mode transient spikes, and high-frequency harmonics.
1. Total Elimination of Ground Loops
In distributed government facilities spanning wide campuses along the Potomac, return paths create unintended ground-differential voltages. Galvanic isolation breaks the conductive link between input return and output chassis, ensuring precision sensors, SCADA PLCs, and optical repeaters operate without baseline wander or induced hum.
2. CMTI & Surge Suppression
Heavy inductive switching from transit traction substations, massive cooling plant chillers, and backup diesel gensets creates severe common-mode transients. Our high-grade planar magnetic transformers provide Common-Mode Transient Immunity (CMTI) exceeding 50kV/μs, protecting sensitive 3.3V, 5V, and 12V microcontrollers from destructive dielectric punch-through.
3. Polarity Flexibility & Bus Conversion
Federal telecom exchanges frequently operate on positive-ground -48V DC bus architectures, whereas modern computer servers, edge compute appliances, and auxiliary sensors utilize negative-ground +12V or +24V systems. Fully floating isolated outputs allow systems engineers to invert polarity seamlessly without dead-shorting the main distribution board.
Mission-Critical Applications in the Washington DC Metropolitan Area
As the epicentre of federal government administration, national defense command, high-speed rail transportation, and world-class cloud data clusters, Washington DC demands uncompromising electrical reliability.
1. Federal Defense & Mobile C4ISR
Installed inside mobile command tactical shelters, satellite uplink vehicles, and perimeter surveillance stations across Fort Belvoir, Joint Base Andrews, and the Pentagon. Galvanically isolated DC-DC modules insulate classified communications transceivers from dirty vehicle alternator transients, starter motor spikes, and ESD discharges.
2. WMATA Metro & Rail Wayside Signaling
Washington Metropolitan Area Transit Authority (WMATA) rail networks and regional commuter lines run on 750V DC third-rail traction systems. Our potted, isolated converters step down intermediate battery strings (36V–75V) to clean 12V and 24V DC to power axle counters, interlocking signals, trackside IoT relays, and onboard cab diagnostics.
3. Data Center Alley & Cloud PoP Facilities
Across the Potomac in Ashburn and suburban DC carrier hotels, hundreds of hyperscale data centers require uninterruptible DC power. Our isolated power supplies drive precision Battery Management System (BMS) controllers, out-of-band monitoring servers, and environmental micro-sensors within 48V rack-level Battery Backup Units (BBUs).
4. Clean Energy Microgrids & Net-Zero Mandates
Under Federal Executive Order 14057, DC federal facilities are deploying rooftop solar PV arrays, energy storage microgrids, and electric fleet chargers. Our wide-input buck-boost converters and LiFePO4 battery chargers stabilize erratic renewable voltage to keep base emergency lighting and control rooms fully operational during grid shedding.
Electrification Trends & Power Architecture Evolutions in the Capital Region
The Washington DC electrical engineering ecosystem is undergoing an unprecedented modernization shift. Municipal bus fleets, federal delivery vans, and government utility utility vehicles are migrating rapidly from legacy 12V internal combustion electrical systems to 48V, 72V, and high-voltage DC lithium energy architectures.
Furthermore, the humid subtropical climate of the Mid-Atlantic region—coupled with winter road-salt brine and coastal salinity along the Chesapeake and Potomac waterways—mandates IP67/IP68 potted aluminum enclosures. Eltrum's vacuum-impregnated polyurethane thermal encapsulation ensures 100% moisture barrier protection, zero internal condensation, and thermal conductivity superior to traditional air-cooled modules.
Isolated vs. Non-Isolated Power Topologies
Selecting the correct DC-DC topology prevents ground differential blowouts, optimizes total power efficiency, and minimizes thermal dissipation inside enclosed system cabinets.
| Architecture Topology | Input Voltage Spectrum | Galvanic Isolation Hipot | Conversion Efficiency | Ideal Washington DC Application Context |
|---|---|---|---|---|
| DC-DC Isolated Buck-Flyback | 18–36V / 36–75V / 18–90V | 1500V DC Galvanic | 88% – 92% | WMATA wayside signalling, negative-ground 48V telecom, military vehicle C4ISR, marine radar. |
| Non-Isolated Synchronous Buck | 24V (18–32V) / 48V (30–60V) | Common Ground (0V) | 94% – 97% | Heavy truck 24V to 12V auxiliary lighting, local DC-bus fans, cabin USB chargers, high-current motors. |
| Buck-Boost Wide Window Stabilizer | 8–40V / 10–60V Universal | Common Ground (0V) | 91% – 95% | Cranking-engine voltage sag stabilization, solar PV fluctuating inputs, mobile radio 13.8V rails. |
| Isolated High-Power DC-DC Charger | 12V, 24V, 48V, 72V Traction | 1500V DC Barrier | 92% – 94% | Dual-battery RV camper vans, electric golf carts, auxiliary LiFePO4 house battery charging from alternator. |
| Synchronous Boost (Step-Up) | 12V (9–18V) / 24V (18–32V) | Common Ground (0V) | 93% – 96% | Stepping 12V/24V battery systems up to 36V/48V for industrial actuators, LiDAR scanners, LED light towers. |
Why Engineering Teams & Exporters Partner with Eltrum
Shenzhen Eltrum Electronic Co., Ltd. combines nearly a decade of focused switch-mode power supply innovation with rigorous on-site quality assurance, flexible minimum order quantities, and custom OEM/ODM delivery capabilities.
ISO 9001 Certified Quality Infrastructure
Manufactured strictly according to ISO 9001 certified quality management protocols. Every isolated converter undergoes automatic optical inspection (AOI), 100% full-load burn-in under thermal cycling, and high-potential dielectric breakdown testing prior to dispatch.
Over 500 Field-Proven Standard Models
From low-profile 5W PCB-mount DC modules to 1500W microprocessor-controlled buck-boost converters and multi-stage 1000W IP65 LiFePO4 battery chargers, our comprehensive catalog eliminates costly ground-up redesigns and shortens time-to-market.
Rapid OEM/ODM Customization & Buyer-Label
Whether your Washington DC project demands bespoke input voltage windows (e.g., 18–140V rail standard), custom military circular connectors (Amphenol, Deutsch), customized RS485 communication protocols, or custom charging profiles, our R&D team delivers working prototypes rapidly.
Low MOQ for Engineering Validation
Unlike restrictive industrial suppliers demanding thousands of pieces, standard Eltrum units are available with sample MOQs starting at just 5 units. This empowers Washington DC engineering laboratories, university research defense labs, and federal contractors to prototype and validate quickly.
CE, RoHS & Global Compliance Assurance
All converter and charger architectures meet stringent European and North American electromagnetic compatibility (EMC) standards, avoiding electromagnetic pollution across sensitive radio frequency and sensor bands. Full compliance documentation packages are provided.
Experienced International Export Infrastructure
Serving over 130 countries worldwide with dedicated logistics corridors into US East Coast air and maritime ports (Dulles IAD, Baltimore BWI, Port of Baltimore, Norfolk). We handle commercial invoicing, harmonized tariff documentation, and DAP/DDP shipping efficiently.
Frequently Asked Questions by Washington DC Engineers & Buyers
Get expert clarity on technical parameters, isolation barriers, federal procurement compliance, export lead times, and custom configuration workflows.
What dielectric breakdown voltage rating do your isolated power supplies carry?
Standard Eltrum isolated DC-DC modules carry a guaranteed 1500V DC dielectric isolation barrier between primary input circuits and secondary output rails. For special defense or rail traction projects requiring 2500V DC or 3000V AC withstand ratings, we design reinforced galvanic isolation platforms upon request.
How do you support federal defense contractors in the DC-MD-VA corridor?
We supply Tier-1 and Tier-2 federal contractors with commercial-off-the-shelf (COTS) and modified-COTS power modules. We provide comprehensive engineering datasheets, MTBF calculation reports (MIL-HDBK-217F standard), step CAD models, and Certificate of Conformance (CoC) documentation for fast integration into contractor bidding packages.
Can your isolated converters handle the extreme voltage spikes on WMATA third rails?
Yes. While 750V DC traction lines require high-voltage front-end protection, our wide-input isolated converters (such as the 36–75V and 18–90V series) are deployed across auxiliary signaling, telemetry, and carriage control systems. They incorporate internal TVS suppression diodes and heavy input capacitor banks to withstand inductive surge spikes.
What is the typical shipping lead time to Washington DC and Northern Virginia?
For standard catalog samples and small validation batches (5 to 50 units), dispatch occurs within 3 to 5 business days via express air courier (DHL, FedEx, UPS), reaching Washington DC (IAD or DCA terminals) in 4 to 6 transit days. Bulk production shipments (500+ units) typically ship in 3 to 4 weeks via air or consolidated ocean freight.
Why is potting silicone preferred over open-frame modules in Mid-Atlantic environments?
The Washington DC capital region experiences high summer humidity, condensation during seasonal shifts, and winter salt aerosols. Open-frame power supplies suffer electrochemical dendritic growth and corona leakage under these conditions. Our thermally conductive polyurethane potting seals all electronics into an IP67 impervious solid block.
Can you provide custom output charging curves for custom battery chemistries?
Yes. In addition to our factory default 14.6V (12V LiFePO4), 29.2V (24V LiFePO4), and 58.4V (48V LiFePO4) profiles, our engineering team regularly programs custom Constant-Current / Constant-Voltage (CC/CV) curves, floating float voltages, and automatic shutoff thresholds into our microprocessor-driven chargers.
What payment and delivery terms do you accept for international buyers?
We accept Wire Transfer (T/T), PayPal, and secure Escrow services in USD or EUR currencies. Delivery terms include EXW, FOB Shenzhen/Hong Kong, and complete DDP (Delivered Duty Paid) directly to your facility or testing warehouse in Washington DC, Maryland, or Virginia.
Do you support telemetry and remote status reporting for automated systems?
Yes, our high-power converters and intelligent chargers offer optional RS485 communication interfaces running Modbus RTU protocols. This enables real-time monitoring of input/output voltage, load current, module operating temperature, fault status registers, and remote power enablement via PLC or supervisory computer.