Explore our first selection of high-performance semiconductor components designed for demanding industrial applications.
Pioneering the next stage of power semiconductor evolution for solar inverters, grid balancing, and energy storage systems.
By refining superjunction processes, our MOSFETs push the boundaries of conventional silicon. The optimization centers on minimizing $R_{DS(on)}$ per unit area while maintaining high $V_{DS}$ ratings, crucial for high-efficiency PV boost stages.
Transitioning to ultra-thin dies packaged in DFN5X6 and TO-263 packages reduces parasitic inductance and thermal impedance ($R_{thJC}$). This allows inverters to run cooler and significantly increases MTBF (Mean Time Between Failures) under high ambient heat.
Future iterations combine power switching nodes directly with real-time feedback loop telemetry. Working alongside Cmsemicon MCU technology, our MOSFET systems are paving the way for software-defined power architectures that self-tune under shifting solar irradiance.
Global renewable energy generation requires reliable, high-voltage switching solutions. Hongkong Olukey Industry Co., Limited provides key components supporting macro-industrial energy shifts. In photovoltaic systems, our medium-to-high voltage WINSOK MOSFETs enable efficient power conversion, helping to reduce energy losses in centralized grid-tied solar farms and distributed micro-grids alike.
By pairing high-efficiency switching devices with Cmsemicon MCU products, Olukey provides manufacturers with a reliable semiconductor ecosystem. This integration simplifies supply chain logistics and ensures component compatibility across smart grids, electric vehicle charging infrastructures, and household energy storage setups.
An engineering analysis of how low $R_{DS(on)}$ and reduced $Q_g$ enhance MPPT efficiency and overall reliability.
In modern photovoltaic (PV) string and micro-inverters, the system's power stage is divided into two primary sections: the DC-DC Boost Stage (which runs Maximum Power Point Tracking - MPPT) and the DC-AC Inversion Stage. In the DC-DC stage, high-frequency switching is necessary to step up the low, variable voltage from the solar panels to a stable high-voltage DC bus. Here, the choice of MOSFET directly impacts thermal performance. Our medium-voltage WINSOK MOSFETs (e.g., 60V, 80V, 100V, and 200V variants) are optimized for low gate charge ($Q_g$) to minimize switching losses at operational frequencies ranging from 50 kHz to over 150 kHz.
In the DC-AC inversion stage, grid synchronization requires highly reliable components with wide Safe Operating Areas (SOA). High-voltage MOSFETs (600V and 650V) are commonly used in H-bridge and multi-level inverter topologies. Body diode recovery characteristics ($Q_{rr}$ and $t_{rr}$) are critical parameters here: slower recovery times can cause voltage spikes and bridge failures during high-frequency switching. The WINSOK range is engineered to offer robust body diodes with fast recovery times, protecting devices against high $dv/dt$ transients and simplifying gate drive circuit requirements.
| Inverter Stage | Common Topologies | Recommended MOSFET V_DS | Critical Parameter Priority | Winsok Reference Package |
|---|---|---|---|---|
| DC-DC MPPT Boost | Single/Interleaved Boost, SEPIC | 60V - 150V | Low $R_{DS(on)}$, Low $Q_g$, High $I_D$ | DFN5X6-8, TO-252-2L |
| Micro-Inverter Primary | Flyback, Full-Bridge Isolated | 30V - 100V | Avalanche Ruggedness ($E_{AS}$), Thermal $R_{thJC}$ | DFN3X3-8, SOP-8 |
| DC-AC Inverter Stage | H-Bridge, NPC Multi-Level | 200V - 650V | Fast $Q_{rr}$, Low $Q_{gd}$/$Q_{gs}$ ratio, High $dv/dt$ | TO-220, TO-263-2L |
| Auxiliary Power Supplies | Buck, Low-power Flyback | 20V - 60V, 600V | High Integration, Small Footprint | SOT-23, SOP-8, DFN3X3 |
HONGKONG Olukey INDUSTRY CO., LIMITED is a solution provider focusing on the overall solution of electronic product components. The main products mainly include: WINSOK MOSFET, Cmsemicon MCU, PCBA circuit board solution development and other three types of product lines. At present, the products of Olukey Industry are widely used in automotive electronics, military electronics, smart industry, new energy, smart medical care, 5G, Internet of Things, smart home, and various consumer electronics products. Relying on the advantages of global general agents of major original factories, we are based in the Asia-Pacific market. Provide customers with various advanced high-tech electronic components by using comprehensive superior services, assist manufacturers in producing high-quality products and provide comprehensive services.
We use comprehensive high-quality services to provide customers with various types of advanced high-tech electronic components, assist manufacturers in producing high-quality products and provide comprehensive services. Over the years, the company has relied on reputation to survive, adhering to the tenet of "quality first, service first", and has established good cooperative relationships with many high-tech enterprises and original manufacturers at home and abroad.
Our production facilities utilize advanced manufacturing technology, combining automated cleanrooms with real-time quality control. Partnering with domestic and international wafer foundries, we run automated production lines configured for high-volume, uniform semiconductor output. This scale helps stabilize lead times and manage production costs compared to traditional fabrication houses.
WINSOK MOSFET's product voltages are mainly medium and low voltage: 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, 650V. The main packages include DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, TO-220, etc. There are more than 600 models and more than 40 packages. Extensive coverage of medium-voltage and low-voltage MOSFET product lines on the market.
Cmsemicon MCU is a microcontroller company born in Shenzhen, with rich product types and technology research and development experience. Becoming a global high-value agent is the common goal pursued by OLUKEY Industrial employees. We adhere to the corporate values of "Pragmatism, Win-win, Service and Responsibility", continue to strengthen service quality, and aim to provide high-quality services. Work hand in hand with suppliers to jointly explore a larger market and contribute to the prosperity and development of semiconductors.
How Olukey ensures seamless integration into tier-1 international supply chains with local technical representation and complete compliance certificates.
In renewable energy markets, compliance with local codes is necessary for component approval. Every MOSFET batch we supply meets RoHS, REACH, and CE requirements, ensuring they can be imported and utilized in EU, North American, and Asia-Pacific markets without trade barriers. Our products undergo rigorous testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling to ensure reliable operation in outdoor environments.
For international tier-1 PV inverter manufacturers, Olukey provides direct Field Application Engineer (FAE) support. Our FAEs help match device parameters, adjust gate resistors to optimize EMI, and resolve layout issues to prevent thermal runaways. We operate local warehousing hubs in Hong Kong and key industrial zones in Shenzhen to coordinate with international shipping lines, helping to keep component supply pipelines reliable.
A simple, transparent, step-by-step verification pipeline for hardware designers and component engineers.
Contact our applications team with your inverter specifications, expected power level, target switching frequency, and current part numbers.
Our FAEs will analyze your requirements and recommend a suitable pin-to-pin replacement or performance upgrade from the WINSOK MOSFET range.
Once approved, engineering samples are shipped from our regional hubs via DHL/FedEx, complete with full datasheets and thermal models.
Answers to technical and commercial questions from power engineers, purchasing managers, and distributors.
Standard lead times for high-volume production orders run between 6 to 8 weeks, depending on the package type. Standard packages like TO-220, TO-263, and DFN5X6-8 are often stocked in our regional distribution centers, allowing for faster dispatch.
Our MOSFETs provide pin-to-pin compatibility and comparable electrical performance (low RDS(on), low gate charge Qg, and similar thermal resistance RthJC) with major tier-1 brands, helping to simplify cross-referencing and validation.
Yes, we support package modifications to meet specific thermal requirements. This includes options for copper clip bonding, customized lead framing, or multi-die co-packaging in standard outlines like DFN and TO configurations.
The Cmsemicon 32-bit Cortex-M0/M0+ controllers (e.g., CMS32M57xx, CMS32L032) are designed to complement our MOSFETs. They include programmable dead-time control and high-speed analog-to-digital converters (ADCs), which are useful for precise gate control in power conversion applications.
Every batch of WINSOK MOSFETs undergoes dynamic parametric tests, high-temperature reverse bias (HTRB) testing, automated optical inspection (AOI), and X-ray inspection of die attaches to verify void-free packaging. We also provide full traceability data for industrial and automotive grade lines.
Browse additional medium and high-voltage MOSFETs and integrated ICs from our product line.
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