100W 14.6V 5A UPS Charge Function Switching Mode Power Supply
Integrated battery backup failover switch, multi-stage constant current charging mode, optimized for lithium and lead-acid architectures.
> 94.5%
Peak Operational Efficiency
100%
Hi-Pot & Aging Inspected
< 50 mV
Ultra-Low Output Ripple
Intertek
Verified Factory Facility
Industrial Catalog
Engineered Metal Case Power Supplies & Multi-Voltage Converters
Tested under severe full-load aging and impulse conditions to safeguard automation arrays, industrial machinery, telecommunication backbones, and LED drivers.
Universal Multi-Voltage 9V 2A AC-DC Regulated Power Supply Adapter
Selectable output profiles (5V, 9V, 12V, 15V, 24V up to 10A) with rugged surge suppressing diodes and Level VI efficiency ratings.
Fullstar 5V 2A Ultra-Low Noise Power Adapter (CE Certified)
Standard 5.5*2.1mm DC plug, integrated anti-interference toroidal ferrite core, and heavy-duty 2-meter PVC jacket.
12V 50A 600W Adjustable DC Perforated Metal Case Power Supply
Dual input selection AC 110V/220V, continuous variable output potentiometer, engineered specifically for high-load Neon Flex & LED displays.
5V 2A/3A Wall-Mount Isolated Auxiliary AC-DC Converter
High-grade anti-surge terminal filtering, reinforced galvanic isolation barrier, and universal compact wall footprint.
Modular AC-DC Switch Mode Enclosed Chassis (12V/24V/48V)
Available in current steps from 1A up to 50A, designed with extruded honeycombed aluminum for superior convective passive dissipation.
Industrial Grade Desktop SMPS Adapter (12V / 15V / 24V)
IEC-320 inlet connection, customizable DC plug polarity, shielded internal EMI filters, and short-circuit auto-recovery logic.
Slimline Metal Case LED Driver & Automation SMPS 150W
Configurable rails from 2.5A to 30A (12V/24V/48V), equipped with synchronous rectification for minimal thermal accumulation.
The Paradigm Shift in Metal Case Switching Power Supply Engineering
In modern electronic design and industrial manufacturing, the demand for power conversion efficiency has moved far beyond rudimentary voltage step-down logic. Today, custom OEM metal case power supply architectures act as the critical frontline defense against electrical spikes, severe common-mode harmonic distortion, and unforgiving thermal profiles. Conventional open-frame power units or unshielded plastic adapters are increasingly being phased out in mission-critical deployments due to their susceptibility to electromagnetic interference (EMI) and insufficient thermal conductivities.
By leveraging cold-rolled steel, anodized aluminum alloy extrusions, and perforated galvanic enclosures, custom metal case SMPS units achieve dual-vector shielding: suppressing both electric field radiation ($E$-field) and magnetic induction loops ($H$-field). Internally, engineering teams must overcome the severe thermodynamic constraints imposed by high-frequency switching operations (typically 65 kHz to 200 kHz). Through finite-element magnetic modeling (FEM) and custom planar transformer winding, core dissipation losses are reduced by up to 28% compared to standard catalogue units, granting overseas buyers unprecedented operational longevity under continuous $24/7/365$ duty cycles.
Future Outlook
Emerging Procurement Trends in Custom OEM Power Solutions
Global original equipment manufacturers are pivoting toward decentralized manufacturing, higher compliance thresholds, and wide-bandgap semiconductors.
GaN and SiC Semiconductor Integration
B2B procurement teams are rapidly demanding Gallium Nitride (GaN) and Silicon Carbide (SiC) primary switches within custom OEM metal enclosures. These wide-bandgap devices decrease gate charge resistance, drastically elevate switching frequencies, shrink magnetic core volumes, and lift power densities beyond 25W per cubic inch.
Modular Multi-Tap Secondary Output Rails
Instead of maintaining disjointed inventories for various operational voltages, procurement strategies favor centralized, multi-tap custom platforms capable of delivering synchronized 12V, 24V, and 48V rails with dynamic load balancing to power simultaneous logic, motor driving, and auxiliary circuitry.
Stringent Unified EMC and Safety Directives
With the integration of IEC/EN 62368-1 superseding legacy 60950 and 60065 standards, tier-1 global distributors require verified engineering reports for electrical clearance, creepage distances, and high-frequency common-mode noise suppression built directly into factory production audits.
Technological Evolution
Next-Generation Technology Vectors in SMPS Manufacturing
Examining the engineering milestones advancing heat exchange geometry, digital control loops, and circular sustainability.
Digital Power Management & PMBus
Analog PWM controllers are ceding ground to DSP-driven architectures running bidirectional PMBus or CAN protocols. These digital feedback loops allow real-time diagnostic reporting on ambient enclosure temperatures, internal ESR degradation, and predictive component maintenance.
Advanced Computational Fluid Dynamics (CFD)
Metal enclosure tooling has shifted from uniform punching to custom honeycomb stamping calculated via thermal CFD simulation. This guarantees directional air currents across hot-spot switching MOSFETs and secondary Schottky diodes, preventing thermal runaway even without loud forced-air fans.
Green Standby & Ultra-Low Parasitic Consumption
In accordance with global net-zero targets and strict ErP Lot guidelines, modern metal case units integrate smart burst-mode switching controllers that curtail no-load standby dissipation to below 0.15W, minimizing parasitic drain in decentralized standby installations.
Verified Manufacturing Excellence
Why Global Exporters Rely on Shaanxi Zelqo Power
Rooted in Xi'an, Shaanxi, our ISO-aligned production floor blends advanced magnetic component design with rigorous multi-tier physical inspection protocols.
Intertek On-Site Verified
Our complete operational footprint, technical personnel credentials, testing equipment calibration matrices, and export transaction histories are independently audited and validated by Intertek.
End-to-End Magnetic Customization
Unlike assembly-only aggregators, we wind, vacuum-impregnate, and calibrate our own high-frequency ferrite transformers and toroidal chokes, ensuring precise match with your circuit load parameters.
Full-Spectrum Factory QC Testing
Every single manufactured unit is subjected to rigorous LCR digital bridge testing, DC low-resistance checks, impulse winding analysis, 100% full-load burn-in aging, and primary-to-secondary high-voltage dielectric isolation tests.
Rapid OEM/ODM Prototyping
Our dedicated R&D engineering hub converts complex electrical schematics and enclosure design constraints into functional, laboratory-verified engineering prototypes within days.
Procurement Guide
Frequently Asked Questions on Custom Metal Case SMPS Sourcing
Addressing crucial electrical parameters, thermal performance ratings, and custom tooling considerations.
What electrical specifications are required to initiate a custom metal case OEM project?
To provide an accurate thermal, magnetic, and enclosure quote, our engineering team requires: primary input voltage range (e.g., universal 85–265 VAC or fixed 110V/220V selector switch), nominal secondary output voltage, rated peak continuous current, maximum tolerable peak-to-peak ripple/noise (in mV), galvanic isolation breakdown threshold (e.g., 3.0 kVAC or 4.2 kVDC), dimensional footprint boundaries, connection interface preferences (screw terminals, barrier strips, or custom molex leads), and expected operating temperature ambient extremes.
Why choose an extruded or perforated metal enclosure over open-frame or plastic power supplies?
Perforated and extruded metal housings offer two major competitive advantages: thermal conduction and electromagnetic compatibility (EMC). Metallic structures act as continuous conductive chassis heat-sinks, diffusing localized heat concentrations away from critical high-stress electrolytic capacitors and MOSFET junction barriers. Furthermore, grounded metal shields absorb radiated electromagnetic interference, ensuring simpler pass rates during downstream CE, FCC, or UL certification of your complete industrial equipment.
How does Shaanxi Zelqo Power control quality and prevent early failure in mass production?
Our documented quality management incorporates incoming raw material IQC (testing core magnetic saturation, wire gauge purity, and capacitor ripple ratings), in-process SMT solder paste automated optical inspection (AOI), high-voltage impulse winding tests on internal transformers, 100% full-load 4-hour to 24-hour burn-in thermal chamber aging, and final automated ATE verification measuring exact voltage regulation under zero-to-full step load changes.
Can you support custom private-label silk-screening and specialized packaging for export distribution?
Yes. As a verified export manufacturer, we provide complete OEM private-label branding. This includes custom high-temperature silk-screened metal case labeling, personalized anodized coloring, barcoded master carton export packing, drop-tested inner foam protections, and bespoke terminal pin-out configurations tailored for turnkey integration into your end-user assembly lines.
What is the standard engineering sample turnaround and mass production lead time?
For standard configurations or slight enclosure modifications, initial functional prototypes are typically wound, assembled, and dispatched within 5 to 7 working days with full factory bench test reports. Mass production runs usually scale from 15 to 25 working days depending on component allocation matrices, customized metal stamping tooling complexity, and designated batch testing protocols.