ISO 9001 Factory · CE & RoHS Compliant DC-DC Power · OEM / ODM Welcome

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Baden-Württemberg Automotive Engineering Standard

Top Trusted Automotive DC DC Converter Manufacturers & Supplier for the Stuttgart Market

High-Efficiency Buck, Boost, Buck-Boost & Galvanically Isolated Power Conversion Systems Engineered for OEM Electrification Platforms, Tier-1 Integration, and Commercial EV Fleets.

500+
Standard Converter Models
96%
Peak Conversion Efficiency
ISO 9001
Certified Quality Management
130+
Countries & OEM Markets
Tier-1 Automotive Power Selection

Featured DC-DC Converters & Advanced Charger Modules

Engineered by Shenzhen Eltrum Electronic Co., Ltd. for harsh automotive environments, low EMI radiated profiles, and seamless integration into German commercial vehicle chassis, campervans, and industrial automation networks.

SPECIALIZED
Smart 36V Lithium Battery Charger DC 12 Volt to DC 43.8 Volt Waterproof Chargers 13A

Smart 36V Lithium Battery Charger DC 12V to DC 43.8V 13A

  • TopologyStep-Up Boost CC/CV
  • Input Voltage10V – 16V DC Nominal
  • Output Voltage43.8V DC (LiFePO4 12S)
  • Ingress RatingIP68 Full Epoxy Potted
Explore Technical Data
HOT SALE
600W Waterproof LiFePO4 Charger 14.6V to 58.4V

600W Waterproof LiFePO4 Charger (14.6V–58.4V)

  • Input TypeWide 90V–265V AC
  • Output Options14.6V / 29.2V / 58.4V
  • Thermal MgmtConduction / Cold Plate
  • ProtectionOCP, OVP, OTP, Short
Request CAD & Datasheet
RS485 BUS
1500W High Power Buck-Boost Converter 10-60V with RS485

1500W High-Power Buck-Boost DC-DC (10–60V Input)

  • Input Range10V – 60V Continuous
  • Output Volt12V / 24V / 28V / 48V
  • Control BusDigital RS485 Telemetry
  • EfficiencyUp to 96.5% Synchronous
Request Engineering Specs
STABILIZER
10-44V to 12V 50A 60A Buck-Boost Stabilizer

10–44V to 12V 50A/60A Automatic Voltage Stabilizer

  • Input Voltage10V – 44V Dynamic Sag
  • Output Rating12V Steady @ Up to 60A
  • ApplicationLV124 Cranking Hold-Up
  • HousingExtruded Aluminum Fin
Request Quotation
COMMERCIAL
8-40V to 13.8V 25A 30A Step-Up Down Converter

8–40V to 13.8V 25A/30A Bidirectional Dynamic Regulator

  • Input Window8V – 40V Wide DC
  • Output Voltage13.8V Clean Radio Rail
  • Continuous PowerUp to 414W Continuous
  • EMC ComplianceLow Ripple < 50mVp-p
Check Sample Availability
GALVANIC ISO
Isolated 18-90V to 12V 10A Waterproof DC-DC Converter

18–90V to 12V 10A Isolated DC-DC Power Module

  • Isolation Barrier1500V DC Galvanic
  • Input Range18V – 90V Traction Bus
  • Output Rail12V DC Regulated @ 10A
  • Common UsesAGVs, Forklifts, CAN Nodes
Contact Engineering
HEAVY DUTY
24V to 12V 85A 100A DC-DC Step Down Buck Converter for Trucks

24V to 12V 85A/100A Commercial Vehicle Buck Regulator

  • Nominal Input24V Bus (18V – 35V DC)
  • Current Output100A Peak / 85A RMS
  • Fleet ApplicationTruck Cab Aux & Tail Lifts
  • Efficiency95% High Current Buck
Inquire Volume Pricing
1000W HIGH PWR
48V to 24V 40A 1000W DC-DC Step Down Buck Converter

48V to 24V 40A 1000W Synchronous Step-Down Module

  • Input Voltage30V – 60V Mild Hybrid
  • Output Voltage24V DC Fixed @ 40A
  • Thermal FormIntegrated Heat-Spreader
  • CertificationsCE, RoHS, ISO 9001
Request Quote & Samples
Strategic Regional Deployment

Automotive Power Electronics in the Greater Stuttgart Metropole

Navigating the architectural transformation from legacy 12V/24V architectures to 48V VDA 320 mild-hybrid rails and 400V/800V high-voltage sub-systems throughout Baden-Württemberg's tier-1 automotive manufacturing cluster.

OEM Prototype & Test Rig Integration

R&D engineering hubs located in Sindelfingen, Untertürkheim, and Weissach require highly agile, ultra-wide-input DC-DC platforms to feed sub-system validation rigs. From SIL (Software-in-the-Loop) testbenches to dynamic chassis dynamometers, Eltrum converters deliver noise-free DC rails that isolate measurement devices from ground loops.

  • Zero crosstalk with sensitive chassis sensor networks
  • Cold-cranking simulation resilience under LV124 standard
  • Compact footprint for rapid under-the-hood bench mockup

Commercial Fleet & Special Bodybuilding

Southern Germany is home to a world-leading ecosystem of commercial transport builders, campervan conversion specialists (such as Mercedes-Benz Sprinter retrofits), and municipal utility vehicle modifiers. Our high-amperage 24V-to-12V buck regulators supply hydraulic tail lifts, auxiliary refrigeration, and emergency lighting arrays.

  • Heavy-duty 85A–100A continuous current ratings
  • IP68 silicone encapsulated modules resistant to road de-icing salts
  • Built-in smart alternator profile recognition

48V Sub-Buses & VDA 320 Power Compliance

Tier-1 automotive electronics suppliers based around Feuerbach and Schwieberdingen are actively rolling out 48V architectures for e-turbochargers, active roll control, and high-performance ADAS domain controllers. Eltrum’s high-density buck-boost stabilizers bridge 48V lithium storage with legacy 12V body control modules.

  • Synchronous rectification delivering up to 96% thermal efficiency
  • RS485/CAN-ready communication interfaces for state-of-health logging
  • Rigorous transient clamping avoiding overvoltage destruction
Hardware Architecture Analysis

Topology Matrix: Sizing DC-DC Converters for German OEM Standards

Selecting between buck, boost, non-isolated buck-boost, and galvanically isolated topologies requires calculating peak-to-peak input voltage ripple, thermal boundary dissipation inside enclosed engine compartments, and common-mode transient immunity.

Conversion Topology Input Voltage Window Regulated Output Nominal Efficiency Automotive Target Use Case Recommended Series
Synchronous Buck 24V (18V – 36V) / 48V (36V – 72V) 12.0V / 13.8V / 24.0V 94% – 96.5% Step-down from 24V commercial vehicle or 48V mild hybrid bus to 12V infotainment & sensors Eltrum WG-Buck High-Amp
Current-Mode Boost 10V – 16V (12V Nominal Car Bus) 24.0V / 36.0V / 48.0V 91% – 94% Stepping up 12V vehicle battery to drive 24V hydraulic valves, 48V auxiliary pumps, or 43.8V lithium packs Eltrum WG-Boost Step-Up
4-Switch Buck-Boost 8V – 40V / 10V – 60V Continuous 12.0V / 13.8V / 28.0V 92% – 95% Voltage stabilization against severe alternator load-dump, engine cold-cranking sag down to 6V Eltrum Stabilizer 1500W
Galvanic Isolated 18V – 36V / 36V – 75V / 18V – 90V 5.0V / 12.0V / 24.0V 88% – 92% High-voltage battery tap isolation, industrial AGV guidance computers, ground-loop elimination on telemetry Eltrum ISO Transformer Ser.

Engineering Note: Managing Thermal Derating in Stuttgart Automotive Environments

When installing converters within sealed engine compartment compartments or under chassis rails exposed to German highway speeds, thermal convection is severely constrained. Standard practice for procurement engineers sizing Eltrum converters is applying a 20% to 25% continuous derating factor if the ambient operating envelope exceeds 50°C. For heavy-duty industrial vehicles utilizing our 1000W+ models, chassis heatsink mounting or active cold-plate integration is recommended to maintain junction temperatures well below the silicon thermal trip threshold of 105°C.

Verified Direct Manufacturer

Shenzhen Eltrum Electronic Co., Ltd. — Your Global Power Conversion Partner

Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. has grown to become a benchmark manufacturer specializing in the research, design, and precision assembly of switch-mode DC-DC converters, AC-DC battery chargers, and specialized voltage regulators. Operating across modern SMT manufacturing lines and rigorous QC burn-in facilities, our operation has been verified onsite by international inspection agencies.

For engineering teams and procurement specialists in Stuttgart, Munich, and the wider DACH automotive supply chain, Eltrum resolves the trade-off between custom European engineering costs and rapid Asian volume manufacturing. We provide flexible OEM & ODM customization—including bespoke CC/CV charging algorithms for specialized lithium iron phosphate (LiFePO4) chemistries, RS485 digital control protocols, waterproof potted mechanical housings, and tailored automotive connectors (Deutsch, Anderson, M12).

ISO 9001:2015 Certified
CE & RoHS Conformity
Low MOQ: From 5 Units
Shenzhen Eltrum Electronic manufacturing headquarters and production facility
Eltrum Electronic Headquarters & SMT Facility
Automotive power electronics automated assembly line
Automated Production Line
Automotive DC-DC load and burn-in testing station
Burn-In & High-Voltage QC Testing
Strategic Procurement Guide

Frequently Asked Questions by German Engineering & Sourcing Teams

Clarifying compliance standards, lead times, sample delivery to Frankfurt/Stuttgart cargo hubs, custom communication bus firmware, and functional testing protocols.

How do Eltrum DC-DC converters comply with German EMC and vehicle interference requirements (e.g., CISPR 25)?
Our automotive-line DC-DC converters are engineered with closed-loop multi-stage LC filters, shielded toroidal inductors, and solid cast-aluminum housings that serve as high-attenuation Faraday cages. For European vehicle integration where cellular, GPS, and FM/DAB+ radio frequency bands must remain clear of switching harmonics, our circuits are tuned to switch outside critical receiver bands (typically switching between 150 kHz and 250 kHz or above 2.1 MHz). Comprehensive CE and RoHS documentation is supplied with production shipments, and custom EMI filtering modifications can be implemented for specific customer chassis ground constraints.
What is the typical lead time for engineering prototypes versus volume batch shipments to Stuttgart?
For standard catalog items (such as our 24V-to-12V 100A buck regulators or 12V-to-43.8V chargers), sample quantities (starting from just 5 units) are typically dispatched from Shenzhen via priority international air courier (DHL Express or FedEx) within 3 to 5 business days, reaching testing facilities in Stuttgart or Sindelfingen in approximately 4 to 7 working days. For volume OEM production orders (500 to 5,000+ units), our standard manufacturing schedule is 18 to 25 calendar days, followed by air freight or consolidated maritime delivery to Hamburg/Rotterdam with customs clearing into Baden-Württemberg.
Can Eltrum modify firmware charging curves for proprietary lithium battery BMS architectures?
Yes. Through our specialized ODM engineering services, Shenzhen Eltrum Electronic Co., Ltd. regularly tailors three-stage (Constant Current / Constant Voltage / Float) battery charging profiles to match the exact cut-off thresholds stipulated by battery cell manufacturers. Whether you are charging a custom 16S LiFePO4 pack, a high-density NMC module, or a low-temperature titanate chemistry, our software team can calibrate target absorption voltages, re-bulk triggers, and programmable current tapers controlled over RS485 or CAN bus interfaces.
Why should we specify a galvanically isolated DC-DC converter over a common-ground non-isolated buck unit?
Non-isolated buck converters offer peak electrical efficiency (95%+) and minimal form factors at lower cost points, making them optimal when input and output share an identical chassis ground reference (such as running 12V lighting off a 24V truck engine alternator). However, galvanic isolation (featuring internal high-frequency planar transformer coupling) is strictly required when: (1) breaking hazardous ground loops between high-voltage traction batteries (48V–90V) and 12V auxiliary logic controllers, (2) preventing digital noise injection into analog chassis load cells, and (3) protecting sensitive telematics modules against destructive high-side common-mode spikes during heavy inductive motor braking.
What protection mechanisms are standard across Eltrum automotive power modules?
Every converter series produced at our Shenzhen plant incorporates comprehensive multi-tiered hardware protections: Input Over-Voltage Protection (OVP), Input Under-Voltage Lockout (UVLO) to prevent dragging starter batteries into deep depletion, Output Over-Current Protection (OCP) with auto-recovery hiccup mode, Output Short-Circuit Protection (SCP), and Over-Temperature Protection (OTP) with thermal foldback. Our potted IP68 modules are further protected against moisture condensation, mechanical shock (up to 20G vibration profiles), and corrosive atmospheric exposure.
What payment and commercial terms do you offer for German corporate clients?
We provide transparent global trade terms including FOB Shenzhen, EXW, and CIF/DAP Frankfurt or Stuttgart. Payments can be seamlessly completed in EUR, USD, or CNY via Telegraphic Transfer (T/T), PayPal for sample evaluations, and secure trade escrow agreements. For ongoing Tier-1 volume accounts with verified procurement histories, structured milestone credit terms can be coordinated following third-party credit index validation.
Design For Manufacture (DFM)

Accelerating Your Automotive Power Lifecycle

From rapid schematic review to serialized automated testing, discover how our 500+ model modular platform slashes R&D cycle times for commercial vehicle builders and industrial automation integrators.

Rapid Custom Tooling & Housing

Do you require custom mounting flange orientations, specific heat pipe extrusions, or IP68 cable gland breakouts? Our in-house tooling shop can modify existing die-cast aluminum enclosures without the standard 6-month tooling lead times typical of legacy power supply vendors.

  • Low initial tooling NRE investment
  • Laser-etched custom buyer part numbering & QR tracking
  • Custom wiring harnesses with waterproof automotive plugs

Pre-Compliance Simulation & Testing

Prevent costly re-spins at third-party test houses (such as TÜV SÜD or DEKRA). Every Eltrum production run undergoes comprehensive load transient testing, high-potential dielectric breakdown tests, and temperature cycling in environmental burn-in chambers.

  • 100% full-load thermal burn-in prior to packing
  • Dielectric withstand isolation tested up to 1500V DC
  • Comprehensive serialization for batch traceability

Direct Supply Chain Resilience

By securing raw power semiconductor agreements directly with top-tier silicon foundries and winding high-permeability magnetic cores in-house, Shenzhen Eltrum shields European clients from component obsolescence and erratic market allocations.

  • Multi-source passive component qualification
  • Guaranteed production availability for 5+ year vehicle programs
  • Direct engineering escalation channel via email and instant live chat

Accelerate Your Automotive DC-DC Integration Project

Connect directly with Shenzhen Eltrum Electronic Co., Ltd.'s application engineering group. Send us your required nominal input range, target regulated output rail, continuous amperage load, and environmental ingress criteria. We provide complete technical data sheets, 3D STEP models, and commercial quotation within 24 hours.

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