24V to 12V 85A/100A High-Power Buck Converter
- TopologyNon-Isolated Synchronous Buck
- Input Voltage18V – 35V DC (24V Nominal)
- Output Power12V DC @ 100A (1200W Max)
- Efficiency> 95.5% @ Rated Load
Engineered For Heavy-Duty Loads
High-Efficiency Non-Isolated Step-Down Converter Series
Explore our heavy-duty, high-efficiency non-isolated DC buck modules optimized for harsh ambient temperatures, heavy dust, high vibration, and wide operational input ranges.
48V to 24V 40A 1000W Non-Isolated Buck Module
- TopologySynchronous Rectification Step-Down
- Input Voltage38V – 60V DC (48V Battery Bank)
- Output Power24V DC @ 40A (960W Continual)
- CoolingExtruded Aluminum Fin Heat Sink
30–60V to 12V 50A/60A High Current Regulator
- TopologyNon-Isolated Common Negative
- Input Voltage30V – 60V DC Wide Range
- Output Power12V DC @ 60A (720W Max)
- ProtectionOVP, OCP, OTP, Short Circuit
30–90V Wide Input to 24V 20A Buck Regulator
- TopologyUltra-Wide High Voltage Buck
- Input Voltage30V – 90V DC (48V/60V/72V Packs)
- Output Power24V DC @ 20A (480W Continuous)
- Ingress RatingEpoxy Potted IP68 Sealed Enclosure
18–90V to 12V 10A Multi-System Converter
- TopologyNon-Isolated DC Step Down
- Input Voltage18V – 90V DC Universal Rail
- Output Power12V DC @ 10A (120W Stable)
- Form FactorUltra-Compact Die-Cast Alloy
Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A
- FunctionSmart DC-DC CC/CV Profile
- Input Voltage10V – 16V DC Starter Alternator
- Charging Output43.8V DC (for 36V LiFePO4 packs)
- ApplicationsEV Carts, Solar Off-Grid, E-Bikes
400W Heavy-Duty DC-DC Smart Battery Charger
- TopologyHigh Efficiency CC/CV Converter
- Input Voltage10V – 36V DC Alternator / Solar
- Charge Cutoff14.6V / 29.2V / 43.8V Configurable
- CertsISO 9001, CE, RoHS Compliant
10–44V Wide Input to 12V 50A/60A Regulator
- TopologySynchronous Dynamic Step Down/Stabilizer
- Input Swing10V – 44V Wide Swings
- Output Power12V DC Regulated @ 60A (720W)
- HousingSilicone Potted Anti-Vibration
Strategic Sourcing Brief: For engineering contractors, utility technicians, transport fleet operators, and industrial EPC managers in Suai (Covalima Municipality, Timor-Leste), power conversion presents unique climatic and electrical challenges. Coastal salt mist, intense equatorial heat, seasonal humidity variations, and unstable off-grid battery arrays necessitate ruggedized, highly efficient power solutions.
As a leading Chinese manufacturer and global exporter, Shenzhen Eltrum Electronic Co., Ltd. provides direct OEM/ODM supply of industrial-grade non-isolated step-down (buck) converters that eliminate thermal dissipation bottlenecks and maximize electrical efficiency across Suai's vital energy networks.
Engineering Superiority: Non-Isolated Step-Down Topologies in Demanding Terrains
When engineering power architectures where input and output can share a common ground (common negative line), non-isolated synchronous buck regulators provide decisive advantages over isolated counterparts. By omitting bulky high-frequency isolation transformers, magnetic core losses are dramatically decreased, achieving operational efficiencies up to 96.8%. In the tropical ambient temperatures of Suai—where temperatures regularly exceed 34°C with relative humidity above 85%—every percentage of thermal loss avoided prevents enclosure heat trapping, minimizes component derating, and ensures unbroken continuous runtimes.
Our non-isolated step-down converters utilize high-power synchronous rectification MOSFETs driven by intelligent PWM controllers, planar inductors with ultra-low DC resistance (DCR), and solid electrolytic capacitors. Encased in high-density aluminum alloy housings and sealed using thermally conductive organic polyurethane and silica potting, these units achieve full IP68 ingress protection. This ensures complete immunity against dust penetration, rain squalls, salt-fog corrosion from the Timor Sea, and mechanical shock from rugged transport vehicles.
Deployment in Timor-Leste
Localized Application Scenarios Across Suai & Covalima
From the Suai Supply Base logistics corridors to isolated off-grid agricultural microgrids, our non-isolated converters provide continuous voltage stepping and electrical protection.
Heavy Commercial Fleets & Port Haulage
Converting 24V dual-battery systems in heavy transport trucks, earthmovers, and port cranes operating at the Suai Airport and coastal logistics hubs down to stable 12V lines for telematics, VHF communication, GPS tracking, and safety lighting without draining starter banks.
Solar Microgrids & Remote Telecom BTS
Stepping down 48V telecom battery banks or off-grid solar storage arrays (36V–60V) to stable 12V or 24V rails to power surveillance nodes, repeater stations, IoT monitoring probes, and municipal radio antennas in mountainous sectors outside urban Suai.
Marine Trawlers & Coastal Workboats
Providing high-amperage 12V auxiliary DC feeds from 24V marine banks to power fish finders, navigation radar, bilge pumps, and LED floodlights on coastal workboats braving high moisture and saline environments in the south coast maritime territory.
Light EV, Utility Trikes & E-Mobility
Stepping 60V and 72V traction battery packs on electric delivery bikes, utility three-wheelers, and golf carts down to 12V DC for horn circuits, LED headlights, dashboard microcontrollers, and low-voltage accessories with instant startup response.
Agricultural Processing & Water Systems
Integrating into off-grid farm pumping controls, coffee bean processing facilities, and solar cold-chain sensors across Covalima, where 24V or 48V DC busbars require conversion to 5V or 12V precision control power.
Emergency Generator Auxiliary Panels
Regulating variable DC charging outputs on standby diesel generation plants across regional clinics, administrative offices, and telecom central offices in Suai to ensure clean, spike-free power for critical monitoring units.
Regional Technical Evolution: Market Trends in Suai & Timor-Leste
The energy ecosystem in Timor-Leste is transitioning rapidly. With national efforts directed toward expanding rural electrification, advancing the Tasi Mane petroleum infrastructure corridors around Suai, and modernizing transport grids, the demand for DC power management hardware has shifted toward specific criteria:
1. Shift from Linear to Synchronous Step-Down: Traditional resistive droppers and obsolete linear regulators dissipate excessive energy as heat, frequently burning out in Suai's hot climate. Modern switch-mode buck converters with synchronous rectification are now the mandatory standard.
2. Adoption of High-Voltage Solar/Lithium Inputs: Transitioning from 12V/24V lead-acid batteries to 48V, 60V, and 72V Lithium Iron Phosphate (LiFePO4) storage banks requires step-down converters with wide input tolerances (up to 90V DC) to withstand transient charging voltages.
3. Hermetic Sealed Protection Requirements: Unsealed perforated metal cages degrade within months along the coastal fringe of Suai due to salt air and insect infiltration. IP68 potted aluminum enclosures represent the benchmark for civil and industrial tenders.
| Conversion Spec | Standard Commercial Buck | Eltrum Tropicalized Non-Isolated Buck | Strategic Benefit for Suai Infrastructure |
|---|---|---|---|
| Conversion Efficiency | 82% – 88% | 95.0% – 96.8% | Significantly reduced heat dissipation; prevents thermal runaway in unventilated outdoor panels. |
| Input Tolerance Range | ±15% Fixed Window | Wide Range (e.g., 18–35V, 30–90V) | Accommodates deep battery discharging and high solar charge voltage spikes without shutdown. |
| Protection Level | IP20 / Vent Holes | Full Epoxy Potted IP68 Waterproof | Zero vulnerability to tropical monsoons, high humidity, mud splash, and saline corrosion. |
| Operating Temperature | -10°C to +45°C | -40°C to +85°C (Industrial Grade) | Reliable continuous output even inside heavy vehicle engine compartments and solar enclosures. |
| Circuit Grounding | Varies / Fragile | Common Negative Ground Architecture | Simple, reliable single-wire chassis grounding for heavy trucks, utility carts, and solar installations. |
Manufacturing Authority
Shenzhen Eltrum Electronic Co., Ltd.
Established in 2015 in Shenzhen, China's hardware innovation core, Eltrum operates a modern manufacturing facility of up to 3,000 m² with certified ISO 9001 quality management. We have engineered more than 500 standardized and custom power conversion models distributed to over 130 countries worldwide.
Our non-isolated step-down converters reflect rigorous production protocols: high-speed surface-mount technology (SMT), automated optical inspection (AOI), 100% full-load thermal burn-in under dynamic conditions, and precision vacuum potting. Every unit shipped to international procurement hubs and project sites in Suai is verified to comply with strict CE and RoHS standards.
Whether you require standard 24V-to-12V 100A truck buck converters or specialized high-voltage 72V/60V-to-24V microgrid step-down modules, our engineering department provides rapid-turnaround OEM and ODM customization—including customized output voltages, bespoke wiring harnesses, RS485 communication protocols, and buyer-label branding.
ISO 9001
Certified Facility
CE / RoHS
International Compliance
MOQ: 5 Pcs
Sample Friendly
100% Burn-in
Full-Load Tested
Procurement & Engineering FAQ
Frequently Asked Questions by Buyers in Suai
Clear answers regarding non-isolated conversion technology, electrical safety, shipping logistics, and custom production for Timor-Leste operations.
Why choose a non-isolated step-down converter over an isolated model for equipment in Suai?
Non-isolated converters share a common negative ground (GND) between input and output. When physical electrical isolation is not mandated (such as automotive dual-battery systems, mobile machinery, or off-grid solar where common grounding is standard), non-isolated buck converters offer significantly higher efficiency (up to 96.8%), a much smaller physical footprint, lower operating heat, and a more economical cost per watt.
How do Eltrum step-down converters endure Suai’s coastal salt air and tropical heat?
Every Eltrum converter model features an industrial-grade die-cast aluminum alloy shell that doubles as an efficient passive heat sink. The entire internal electronics assembly is sealed with thermally conductive epoxy resin or polyurethane potting rated IP68 waterproof and dustproof. This protects internal micro-components from saline corrosion, high humidity, direct rain, and vibration on unpaved roads.
What is the Minimum Order Quantity (MOQ) and sample lead time for Timor-Leste purchasers?
To assist project engineers and fleet managers in validating designs before placing bulk orders, our standard MOQ starts from just 5 units. In-stock sample models can be dispatched from our Shenzhen factory within 24–48 hours via international air couriers (DHL/FedEx/UPS) to Dili, with ongoing domestic delivery routes down to Suai.
Can Eltrum customize output voltages and wire termination for specific mining or fleet tenders?
Yes. As a direct source factory, we offer end-to-end OEM/ODM design services. We can configure specific output voltages (e.g., 5V, 7.5V, 12V, 13.8V, 19V, 24V, 28V, 36V), adapt custom wire gauges and lengths, attach waterproof industrial automotive connectors (Deutsch, Anderson, or Amphenol), or produce private buyer labels.
What safety protections are built into your high-amperage (e.g., 60A–100A) buck regulators?
All our industrial step-down modules incorporate multiple layers of active protection: Over-Current Protection (OCP) with auto-recovery, Over-Voltage Protection (OVP), Over-Temperature Protection (OTP) that dials back output or triggers safe thermal cutoff, Short-Circuit Protection (hiccup mode), and reverse polarity protection on designated models.
What are the accepted commercial payment terms and shipping arrangements?
We support T/T (telegraphic transfer), PayPal, and Escrow in USD or CNY currencies under FOB (Shenzhen/Guangzhou), CIF, or EXW trade terms. For bulk project consignments heading to the Suai Supply Base or Dili port, we coordinate with designated freight forwarders for air cargo and ocean container handling.