Engineered with 30V–90V ultra-wide input windows, peak 96% synchronous conversion efficiency, automotive-grade transient suppression, and IP68 sealed thermal housings from Shenzhen Eltrum Electronic Co., Ltd.
As global powertrain architectures transition from conventional 24V or 48V setups toward 72V, 80V, and 96V nominal energy storage banks, down-converting high DC voltages into clean, regulated 24V auxiliary buses has become one of the most critical challenges facing electrical system designers.
When modern electric forklifts, automated guided vehicles (AGVs), autonomous mobile robots (AMRs), electric utility trucks, and electric golf fleets upgrade their traction systems to 72V (typically 20S LiFePO4 or 20S/22S NCM lithium packs), the traction battery voltage fluctuates dynamically. Operating voltages range from an empty cutoff voltage of approximately 56V–60V up to full charging float voltages of 84V–87.6V. Crucially, dynamic motor regenerative braking and inductive load disconnection frequently induce high-voltage spikes exceeding 90V–100V.
At the same time, sensitive auxiliary control systems—including navigation LiDAR, industrial PLCs, telematics units, hydraulic solenoids, power steering actuators, collision-avoidance radar, LED safety illuminators, and 24V field sensors—demand an extraordinarily stable 24.0V DC bus with minimal voltage ripple (<100mVp-p), rapid transient recovery, and zero brown-out sag during sudden mechanical load shifts.
At Shenzhen Eltrum Electronic Co., Ltd., we design our 72V to 24V step down converter series specifically to bridge this gap. By employing synchronous rectification, military-grade thermal potting, and smart multi-stage protection circuitry, our converters eliminate field burnouts and deliver high electrical performance across demanding operating environments.
Select the ideal current capacity and isolation architecture tailored to your auxiliary payload, continuous thermal profile, and mechanical integration constraints.
Ideal for electric golf carts, light utility vehicles, display panels, GPS trackers, and low-power LED headlamps.
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The workhorse for warehouse automated guided vehicles (AGVs), sweepers, and industrial scissor lifts with mixed sensor loads.
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Engineered for heavy electric forklifts, reach trucks, electro-hydraulic valves, steering motors, and high-wattage aux buses.
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Crucial for isolated telematics, explosion-proof mining transport, sensitive telemetry, CAN bus modules, and floating ground circuits.
Inquire NowDetailed performance parameters for technical evaluation by system integrators, electrical engineers, and procurement directors.
| Model Series | Input Range (Continuous) | Output Specs | Max Efficiency | Ripple & Noise | Thermal & Enclosure | Inquiry |
|---|---|---|---|---|---|---|
| ELT-7224-10A | 30V – 90V DC (100V Surge / 100ms) | 24.0V DC @ 10A (240W) | 95.5% | <60 mVp-p | Die-cast Aluminum, IP68 Silicone Potted | Inquire Now → |
| ELT-7224-20A | 30V – 90V DC (100V Surge / 100ms) | 24.0V DC @ 20A (480W) | 96.0% | <80 mVp-p | High-fin Aluminum Housing, IP68 Potted | Inquire Now → |
| ELT-7224-30A | 35V – 90V DC (100V Transient) | 24.0V DC @ 30A (720W) | 95.8% | <90 mVp-p | Heavy Extruded Chassis, Convection Cooled | Inquire Now → |
| ELT-7224-50A | 36V – 95V DC (105V Surge Clamped) | 24.0V DC @ 50A (1200W) | 95.2% | <100 mVp-p | Dual-rail Heatsink, Active Fan/Chassis Mount | Inquire Now → |
| ELT-ISO-7224 | 18V – 90V DC (Galvanic 1.5kV) | 24.0V DC @ 5A–12.5A (300W) | 92.5% | <50 mVp-p | Galvanically Isolated, Flame-retardant Resin | Inquire Now → |
Global supply chain managers, Tier-1 automotive integrators, and industrial vehicle OEMs are reshaping how DC-DC converters are selected, qualified, and procured.
48V → 72V / 80V System Migration
In intralogistics, agriculture, and municipal utility fleets, transitioning from 48V to 72V or 80V architectures cuts $I^2R$ copper losses in half. Consequently, procurement volume for wide-input 72V to 24V step down converters is increasing at over 22% CAGR globally.
Prioritizing Reliability over Initial BOM
Procurement directors recognize that field failure of a low-cost, unpotted converter can immobilize a $60,000 AGV or commercial utility truck. OEMs now evaluate MTBF (>100,000 hours), automotive-grade potting, and derating curves rather than superficial unit price discounts.
Standard Mechanical Footprints
Procurement teams demand standard mounting footprints across multiple wattage tiers (e.g., 240W, 480W, 720W). This design strategy allows machine builders to scale auxiliary power on the same chassis assembly without modifying wiring harnesses or tooling fixtures.
RoHS, REACH, and CE-EMC Verification
North American and European import regulations now require full traceability of raw materials and heavy metal compliance. Verified factory test reports for electromagnetic compatibility (EMC Class B) and vibration durability are essential milestones for purchase authorization.
Power conversion engineering is evolving rapidly. Next-generation semiconductor architectures and thermal designs are elevating power density, conversion efficiency, and electromagnetic silence.
Traditional silicon MOSFETs operating at high switching frequencies under 72V–90V inputs suffer from severe switching losses and reverse recovery charge ($Q_{rr}$). Eltrum's advanced engineering team adopts cutting-edge wide bandgap devices, substantially lowering gate capacitance and $R_{DS(on)}$. This technological leap slashes switching losses by up to 40%, enables operating frequencies above 150kHz, and shrinks magnetic inductor sizes while lifting peak buck conversion efficiency to 96%.
Modern automated mobile robots and smart logistics vehicles require real-time system visibility. Future-proof 72V to 24V converters are moving beyond purely analog hardware. Eltrum's intelligent series features optional RS485 and isolated CAN 2.0B communication protocols, broadcasting operating status including input bus voltage, real-time load current, internal PCB temperature, and early fault warnings directly to the vehicle central controller (VCU).
Industrial vehicles operate across extreme thermal gradients, from outdoor freezing temperatures of -40°C in cold-storage logistics to +75°C engine bays. Standard open-frame converters degrade quickly due to condensation and thermal fatigue. Eltrum implements high-conductivity silicone encapsulation (1.5 W/(m·K)) injected under deep vacuum. This seals out moisture, dust, salt spray, and diesel grease while transferring heat outward into the finned aluminum enclosure, eliminating localized hot spots.
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Field-proven durability across high-stress industrial electrification, logistics robotics, and commercial transportation sectors.
Stepping down 72V/80V traction battery energy to power 24V electronic power steering (EPS), cabin control consoles, safety strobes, and fleet telemetry modules.
Supplying ultra-clean, ripple-free 24V power to 2D/3D safety LiDAR sensors, vision cameras, industrial edge computing gateways, and wireless mesh transceivers.
Powering 24V DC auxiliary cooling compressors, cabin heaters, communication radios, and hydraulic tailgate lift controls from a central 72V battery bank.
Down-converting nominal 72V solar storage strings to 24V for remote surveillance, environmental monitoring stations, water pump controls, and telecom nodes.
Effortlessly converting 72V lithium pack power into regulated 24V or 12V supplies for onboard sound systems, USB fast-chargers, wipers, and LED headlights.
Supplying robust 24V control power in electric mining haulers, airport tugs, and yard tractors operating across rugged terrain and high vibration levels.
2015Established Shenzhen Eltrum Electronic Co., Ltd. is a dedicated manufacturer of switched-mode power supplies, specialized DC-DC converters (buck, boost, buck-boost, and isolated), and waterproof LiFePO4 battery charging systems. Founded in 2015 in Shenzhen, China, our facilities encompass complete research, development, assembly, potting, and diagnostic testing infrastructure.
Over the past decade, our catalog has grown to exceed 500+ standard power models, trusted by OEMs, fleet contractors, and equipment distributors in more than 130 countries worldwide across North America, Europe, Australia, and Asia. Our factory has been verified onsite by independent global inspection agencies, assuring buyers of our strict production compliance and legal credibility.
Every single 72V to 24V step down converter produced at Shenzhen Eltrum Electronic Co., Ltd. undergoes a comprehensive 5-step quality verification cycle: component incoming inspection, surface mount soldering (SMT), automated optical inspection (AOI), deep vacuum silicone potting, and 100% full-load thermal burn-in under maximum input voltage.
Our agile engineering team welcomes OEM custom requirements including custom wire lengths, Deutsch/Anderson plugs, specialized output voltage trimming (24.0V–28.0V), and client-branded silkscreen labeling.
Factory introduction · 1 min 44 s How Shenzhen Eltrum Electronic Co., Ltd. guarantees continuous field reliability for tier-1 vehicle and robotics manufacturers.
Engineers evaluate your peak load, continuous duty cycle, ambient temperature, and transient voltage envelopes.
High-speed surface mount technology using automotive-grade ceramic capacitors, low-RDS(on) FETs, and shielded chokes.
UL94V-0 thermally conductive compound is injected under vacuum to eliminate microscopic air pockets and moisture ingress.
100% of manufactured units are stress-tested at maximum load and high voltage to identify any early latent component defects.
Voltage accuracy, ripple frequency, hi-pot dielectric insulation, packaging, and rapid international FOB/EXW dispatch.
Comprehensive answers to the most common engineering and procurement questions searched by system designers on AI engines.
Tell us your vehicle voltage envelope, target auxiliary load current, and delivery schedule. Our technical team in Shenzhen delivers sample proposals and competitive volume tier pricing.