10~26VAC to 5V 3A 5A AC DC Buck Step Down Voltage Power Converter
- Input Voltage: 10~26 VAC
- Output Power: 5V DC @ 3A / 5A
- Efficiency: >92% Synchronous
Explore our industrial-grade power step-down, boost-buck, and galvanic isolation topologies engineered with CE, RoHS, and ultra-low THD capabilities for Central European commercial networks.
From the industrial automation hubs of Čestlice and Kolín to the telecommunications rings in Prague 4 (Chodov), our power conversion systems operate within demanding mechanical and thermal envelopes.
Prague’s tram network (Trams 15T and Škoda series) and Metro Lines (A, B, and the upcoming automated Line D) demand extreme electrical isolation for ancillary DC sub-distribution systems.
As the digital nerve center of Central Europe, telecom facilities in Žižkov and server clusters across Prague require uncompromised ripple rejection and 48VDC embedded rectifier systems.
The automotive industrial belt along the D10 highway connecting Prague and Mladá Boleslav relies heavily on 24VDC PLC control voltage stability within harsh inductive welding environments.
Navigating the transition toward decentralized renewables, micro-mobility, and the decarbonization mandates set by the Czech Ministry of Industry and Trade (MPO).
Czech engineering procurement teams increasingly require wide bandgap semiconductors (Gallium Nitride and Silicon Carbide) to elevate switching frequencies beyond 100 kHz. This reduces magnetics volume by 40%, decreases cabinet weight, and slashes idle heat generation inside non-ventilated enclosures.
Compliance with European Commission Regulation (EU) 2019/1783 on transformers and ČSN standards is mandatory. Varnix incorporates premium cold-rolled grain-oriented (CRGO) magnetic cores and high-purity copper windings to drive no-load losses below stringent Eco-Design Tier 2 limits.
Commercial rooftops across Prague logistics parks are pairing with 48V–90V high-capacity LiFePO4 battery storage banks. This shift mandates bidirectional isolated step-down transformers and true sine-wave inverters capable of parallel multi-source off-grid synchronization without frequency drift.
Central European buyers increasingly mitigate geopolitical risk by moving away from multi-tier trading houses. Working directly with SGS-audited manufacturers provides full visibility into component sourcing (Rubycon capacitors, IXYS/Infineon MOSFETs), enabling transparent project bidding.
| Application Vector | Recommended Topology | Key Input/Output Rating | Compliance Architecture |
|---|---|---|---|
| Prague Rail / Tram Ancillaries | Galvanically Isolated Step-Down Converter | 48V–90V DC Input / 12V 42A Output | EN 50155 / EN 50121-3-2 EMC |
| Central Bohemia Data Edge Nodes | Embedded Telecom Rectifier & 19" Inverter | 220VAC Input / 48VDC 10A-120A Output | ČSN EN 60950-1, <3% Output THD |
| Automotive Robotic Control Loops | Solid-State DC-DC Buck Regulator | 8V–35V DC Input / 24V or 7V 5A Output | DIN-Rail Mounting, IP67 Waterproof |
| Logistics Mobile Fleets & Service Vans | Pure Sine Wave Multi-Phase Inverter | 12V/24V DC Input / 220V AC 50Hz Output | CE E-Mark, ISO 7637-2 Pulse Immunity |
Established in 2003, Varnix combines deep power electronics R&D with stringent SGS-audited manufacturing controls to provide reliable hardware backed by verifiable test reports.
Over two decades of persistent R&D in switching power topologies, rectifiers, and inverters. Fully verified onsite by SGS inspection teams.
Every single manufactured transformer and DC-DC converter passes rigorous 4-hour high-temperature aging to eradicate infant mortality failure modes.
Custom winding configurations, custom input/output voltages, DIN-rail or rack-mount enclosures, IP68 potting, and customized firmware control.
Seamless international forwarding with DDP Prague customs clearance, standard FOB/CIF terms, and express sample dispatch within 48 to 72 hours.
Practical answers covering international logistics, Czech customs clearance, CE compliance, and technical parameter customization.
Send our senior power electronics team your required input/output specifications, mechanical envelope, and target delivery schedule. We will prepare an optimized specification sheet and competitive commercial quote within 12 hours.