Explore our premium range of industrial, automotive, and consumer power conversion devices.
Established in 2011, Dongguan Caiku Electronic Technology Co. Ltd. has emerged as a premier, vertically integrated manufacturer specializing in advanced power adapters, AC to DC converters, and peripheral hardware. Through two decades of strategic and operational upgrades, we have engineered power supplies that combine robust performance with low energy dissipation.
As an industry-leading OEM/ODM power supply factory, Caiku focuses on in-depth product cultivation, independent research and development, energy efficiency, and reducing environmental footprints. From initial wire extruding to complex PCB assembly and rigorous network analysis, we manage the entire value chain in-house to guarantee consistent quality.
Caiku will be your reliable partner. We promise premium quality and dedicated support.
We hold more than 20 design and engineering patents across Europe, the US, and China.
Products successfully distributed to over 100 countries under our international trademark.
Active engineering department developing 3 to 10 new power solutions monthly.
A comprehensive technical overview of modern switching power conversion, thermal performance, and global compliance.
Modern electronic systems require stable, highly efficient, and noise-free direct current (DC) derived from alternating current (AC) grids. This transition is governed by switching topologies that minimize power dissipation. Unlike legacy linear power supplies, which dissipate excess voltage as heat, Switched-Mode Power Supplies (SMPS) utilize high-frequency switching transistors to modulate power delivery.
By adopting advanced Topologies such as Flyback, LLC Resonant, and Active Clamp Flyback (ACF), we reduce switching losses. Our engineering utilizes Gallium Nitride (GaN) semiconductors to replace traditional silicon MOSFETs. GaN components feature higher electron mobility and lower Rdson, allowing switching frequencies to exceed 100 kHz while reducing the footprints of inductors and capacitors. This results in power densities exceeding 20W per cubic inch.
Dongguan is a global hub for precision electronics manufacturing. Operating within this region allows Dongguan Caiku Electronic Technology Co. Ltd. to source raw materials, design custom PCBs, and conduct tooling fabrication locally.
Our factory integrates processing steps under one roof—from wire extrusion and copper braiding to terminal crimping and injection molding. This vertical integration reduces the lead times common with outsourced manufacturing. By controlling all phases of production, we minimize assembly defects and stabilize costs against raw material fluctuations, providing our clients with reliable high-volume pricing.
Enterprise procurement teams prioritize product safety, regulatory compliance, and consistent delivery. Selecting an OEM/ODM supplier requires verifying manufacturing capabilities, engineering expertise, and compliance structures.
We focus on mitigating procurement risks through transparent testing protocols. Every batch undergoes automated testing, including network analysis, load testing, and burn-in procedures to calculate MTBF (Mean Time Between Failures). Whether you are sourcing wall-mounted EV chargers or GaN adapters for smart home systems, our engineering team provides comprehensive testing documentation to simplify integration into your supply chain.
Electric power components must meet localized safety regulations to be cleared for import and sale. Caiku designs converters to align with global standards, including UL (North America), PSE (Japan), GS (Germany), and CE (European Union).
Our regulatory engineers monitor updates to standards like IEC 62368-1 (safety for audio, video, information, and communication technology equipment) and DoE Level VI energy efficiency metrics. Designing compliance directly into the PCB layout allows us to help customers obtain certificates quickly, reducing regulatory barriers and speeding up time-to-market.
Showcasing our product versatility and design engineering capabilities.
How we control quality at every stage, from raw copper to packed and tested converters.
Our facility is equipped with automated equipment and analysis systems to support our OEM and ODM services.
Analyzing industry-specific deployments and future technical vectors for AC to DC systems.
In industrial automation, electromagnetic interference (EMI) can disrupt sensor readouts and data paths. Industrial-grade AC to DC converters require low ripple and noise specifications—typically below 50mVp-p—as well as robust galvanic isolation.
Caiku designs power supplies with integrated Pi-filters and common-mode chokes to mitigate high-frequency harmonics. This maintains operational stability within high-density server racks and control units. Our active power factor correction (PFC) circuitry improves power efficiency to over 0.98, helping facilities reduce energy loss and meet green manufacturing mandates.
The expansion of smart home devices, IoT sensors, and electric vehicles (EV) has driven demand for compact, efficient chargers. IoT microcontrollers require low standby power usage, matching the EuP Lot 6 requirements for less than 0.5W in standby mode.
For consumer applications, we engineer high-density USB-C PD (Power Delivery) adapters that adjust voltage outputs dynamically based on the connected device. For electric mobility, our high-voltage chargers—such as our UL-compliant 54.6V 13S lithium chargers and wall-mounted EV stations—incorporate temperature protection and automatic shut-off functions to prevent thermal runaway.
Technical answers to common engineering and sourcing questions about AC to DC conversion.
GaN transistors switch faster and dissipate less energy as heat compared to traditional silicon MOSFETs. This allows the converter to operate at higher frequencies, reducing the physical size of transformers, inductors, and capacitors. As a result, GaN adapters offer higher power density, improved efficiency, and more compact enclosures.
We design our products to meet international standards directly at the PCB layout phase. Our layouts incorporate appropriate creepage distances, clearance boundaries, galvanic isolation barriers, and thermal management. Our factories perform testing for dielectric withstand voltage, leakage current, and EMI attenuation to ensure compliance before certification submission.
Key factors include capacitor life (using high-temperature 105°C rated capacitors), thermal management (efficient heatsinks and airflow), and the operating temperatures of semiconductor junctions. We run automated burn-in testing on each batch to monitor thermal performance and guarantee a high MTBF under load.
Cables are safety-critical components that must withstand physical wear, repeated bending, and high current loads. Controlling wire extrusion, stranding, and braiding in-house allows us to manage copper purity and jacket insulation thickness, preventing short circuits and voltage drops.
Standby power (or no-load loss) is the power drawn by a supply when the load is inactive. Our converters utilize burst-mode control ICs that lower switching frequency under light loads, keeping standby consumption below 0.21W to align with Energy Star and EU Ecodesign requirements.
We provide tooling options for both wall-plug and desktop adapters. We assist clients in designing enclosures with custom dimensions, corporate branding, specific port orientations, and high flame-retardant materials (UL 94V-0).
Our high-wattage power designs incorporate internal temperature sensors. If temperatures exceed safety thresholds, the protection circuit triggers thermal throttling or shut-off to protect internal components and the connected device.
Initial schematic designs and 3D mockups are typically ready in 5 to 7 working days. Once approved, prototypes are fabricated in 2 to 3 weeks. Standard mass production runs take 4 to 6 weeks, depending on component availability and scheduling.
Explore our complete product catalog, featuring laptop power adaptors, EV charging hardware, and smart battery chargers.
Caiku Electronic