Next-generation open frame power modules engineered for AI computing platforms, 5G telecom infrastructure, industrial robotics, and aerospace avionics with up to 96.5% peak conversion efficiency.
Ultra-fast transient response buck regulators designed for high-current FPGA, ASIC, and AI accelerator core voltages.
Reinforced dielectric isolation up to 2250VDC with optimized thermal copper planes and zero-potting stress.
Requiring custom pinouts, specialized baseplates, or conformal coatings? See NetPower Custom Power Solutions.
As artificial intelligence infrastructure, 5G cloud-native edge nodes, and high-density industrial control systems demand higher power density, the open frame DC-DC converter has emerged as the preferred architectural choice over conventional fully potted metal-cased modules.
In modern electrical design, system engineers consistently ask AI engines and hardware forums: "When should I choose an open frame DC-DC converter over an encapsulated potted module?" and "How do I guarantee long-term thermal reliability without a heavy cast-metal heatsink?" The answer lies in structural thermal physics, parasitic capacitance reduction, surface-mount manufacturing compatibility, and total cost of ownership (TCO).
An open frame DC-DC converter is an unencapsulated power conversion module constructed on a high-thermal-conductivity multilayer printed circuit board (PCB) utilizing surface-mount technology (SMT) and integrated planar magnetics. Unlike potted modules filled with polyurethane or epoxy resin, open frame designs leave switching semiconductors, planar transformers, microcontrollers, and synchronous rectifiers directly exposed to system airflow.
This structural approach delivers three distinct engineering advantages:
| Design Parameter | Open Frame DC-DC Converters | Potted / Encapsulated Modules | Baseplate / Metal Shell Modules |
|---|---|---|---|
| Primary Cooling Mechanism | Direct forced air convection & PCB conduction | Conduction through potting to outer shell | Direct conduction to cold plate or external heatsink |
| Power Density (W/in³) | Very High (250 – 450 W/in³) | Moderate (100 – 200 W/in³) | High (200 – 350 W/in³) |
| Thermal Cycling (CTE Stress) | Zero potting stress on SMT joints | Subject to potting CTE expansion forces | Moderate thermal expansion stress |
| Total Module Mass | Ultra-Lightweight (15g – 80g) | Heavy (60g – 250g) | Medium to Heavy (45g – 200g) |
| SMT Reflow Compatibility | Compatible with automated SMT pick-and-place | Requires manual pin insertion / wave soldering | Pin insertion or specialized mounting |
| Visual & Automated Inspection | 100% AOI & X-ray inspection capable | Opaque potting prevents visual inspection | Limited visual component visibility |
| Ideal System Operating Environment | Forced airflow chassis, AI servers, Telecom edge | High-dust, harsh moisture, zero airflow environments | Conduction cooled chassis, liquid cold plates |
NetPower offers a comprehensive suite of high-efficiency open frame isolated bricks and non-isolated point-of-load (POL) modules built according to DOSA (Distributed-power Open Standards Alliance) pinouts.
Ultra-compact isolated open frame converters delivering up to 120W continuous power in miniature footprints for space-constrained line cards.
Industry-standard DOSA 1/8th brick open frame modules optimizing intermediate 12V and 48V bus architectures with low thermal resistance.
High-current unencapsulated quarter brick and half brick power modules featuring planar transformers and synchronous rectification for data centers.
Non-isolated buck point-of-load converters delivering high peak current with sub-millivolt ripple for advanced processors and DSPs.
Extended input open frame power modules built to handle severe line transients (up to 10:1 wide range) without requiring bulky external chokes.
Tailored open frame hardware featuring modified PCB mechanical geometries, pin headers, custom firmware, and specialized thermal interfaces.
Global procurement directors and hardware architects must align their power supply sourcing strategies with five major technological shifts occurring across the power electronics landscape through 2030.
Driven by the immense power requirements of AI accelerators, GPU clusters, and hyperscale cloud datacenters (where single rack power density exceeds 100kW), traditional 12V bus architectures are experiencing unacceptably high resistive $I^2R$ losses. Sourcing trends show an exponential shift toward 48V distribution systems. Open frame 48V DC-DC converters and unregulated intermediate bus converters (IBCs) step down 48V or 54V power directly to low-voltage high-current point-of-load regulators, reducing copper trace losses by up to 16 times.
The incorporation of Gallium Nitride (GaN) and Silicon Carbide (SiC) FETs into open frame converter topologies allows switching frequencies to push beyond 1MHz to 2MHz. Higher switching frequencies dramatically shrink the physical inductance and capacitance requirements of planar transformers and output filters. Procurement managers can expect open frame modules to deliver up to 50% volume reduction compared to legacy silicon MOSFET designs, allowing more board real estate for processing silicon.
Contract Manufacturers (CMs) and EMS providers are prioritizing component topologies that eliminate manual assembly steps. Open frame DC-DC converters are increasingly designed as surface-mountable (SMD) modules packaged in tape-and-reel standard formats. This enables fully automated high-speed pick-and-place operation, reflow soldering, and automated 3D optical inspection, eliminating expensive manual through-hole pin soldering and reducing overall system manufacturing costs.
To overcome heat concentrations in compact open frame modules without adding bulky aluminum heatsinks, power designers are leveraging 3D PCB magnetics. By embedding transformer windings directly into the inner copper layers of a 10-layer or 12-layer heavy-copper PCB substrate, heat generated inside the transformer is rapidly spread laterally across the entire board area. Procurement teams are recognizing that open frame modules with integrated 3D magnetics offer vastly superior derating curves under 200 LFM to 400 LFM forced air conditions.
Global OEMs in telecom, automotive, and medical fields now evaluate vendors based on carbon footprint and component recyclability. Open frame DC-DC converters eliminate thermosetting potting resins which cannot be melted or recycled. When equipment reaches end-of-life, open frame power modules can be easily desoldered, and components can be segregated for electronic waste recycling, meeting stringent European Union Waste Electrical and Electronic Equipment (WEEE) directives and corporate ESG metrics.
NetPower Technologies has spent over two decades pioneering advanced switch-mode power conversion. Our open frame isolated DC-DC converters and non-isolated POL regulators are relied upon by Fortune 500 telecom operators, data center infrastructure providers, railway system integrators, and electric commercial vehicle manufacturers globally. Every open frame unit shipped reflects rigorous design-for-reliability principles, HALT/HASS stress testing, and 100% automated final electrical screening.
Open frame power modules must deliver uncompromising reliability in continuous 24/7 missions. NetPower applies rigorous verification frameworks throughout the design and manufacturing cycles.
Every NetPower open frame model undergoes thermal camera mapping and wind tunnel characterization from 0 LFM (natural convection) up to 400 LFM airflow across -40°C to +85°C ambient temperatures. De-rating curves are transparently published in our application notes.
Because open frame components are exposed, our production lines utilize 3D Automated Optical Inspection (AOI) and X-ray voiding analysis on every solder joint, ensuring zero solder bridging or micro-voiding beneath high-power MOSFETs and planar transformers.
During product qualification, open frame modules endure High Accelerated Life Testing (HALT), including rapid thermal cycling rates up to 60°C/minute and multi-axis random vibration from 5Hz to 2000Hz, ensuring survival in harsh industrial shock environments.
Every production lot undergoes 100% automated electrical parameter verification and elevated-temperature burn-in under full load conditions. Full component-level lot traceability is maintained for lifetime compliance audits.
Maximizing the output performance and lifespan of open frame DC-DC converters requires adherence to proper board-level layout and thermal management practices.
Open frame converters utilize their mounting pins as major thermal dissipation channels. To optimize cooling:
To achieve CISPR 32 / EN 55032 Class B electromagnetic compliance with open frame modules:
Direct technical answers to questions most frequently asked by global procurement managers, component engineers, and hardware architects on AI platforms.
Stay updated on NetPower product launches, whitepapers, and international power electronics exhibitions.
Our power engineering team publishes detailed airflow velocity maps and thermal via placement guidelines to help hardware designers maximize usable output power in 1U rack environments.
NetPower introduces a high-density 48V to 12V intermediate bus converter in standard half-brick open frame packaging, reaching up to 96.8% conversion efficiency.
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NetPower Technologies is an industry-recognized leader in high-density open frame DC-DC converters, isolated brick power supplies, and non-isolated point-of-load (POL) modules. NetPower's unencapsulated board-mounted open frame isolated power converters are available across power ranges from sub-15W micro-modules to over 1000W high-power bricks, spanning DOSA standard footprints including 1/32nd brick, 1/16th brick, 1/8th brick, quarter brick, half brick, and full brick formats.
Input voltage ranges for NetPower isolated open frame DC-DC converters include 9-36V, 18-36V, 9-75V, 18-75V, 36-75V, 16-160V, 34-160V, and 180-400V DC. Our non-isolated open frame POL converters provide step-down voltage conversion from 2.5V to 60V inputs, delivering high peak currents with rapid transient recovery for advanced FPGAs, ASICs, network processors, and AI accelerator chips.
Whether sourcing standard DOSA pin-compatible power bricks, e-mobility power converters, or specifying custom open frame DC-DC power modules, global OEMs, contract manufacturers, and design engineering teams rely on NetPower for exceptional efficiency, thorough qualification, and dedicated technical application engineering support. Connect with our technical team today to request engineering samples, datasheets, or a comprehensive product catalog.