As global industries pivot toward decarbonization, Battery Energy Storage Systems (BESS) have evolved from simple backup power setups into highly complex dynamic assets for grid stability. At the core of these conversion infrastructures lie discrete semiconductor components, with power MOSFETs playing a vital role. In modern lithium-iron-phosphate (LFP) and sodium-ion systems, energy efficiency is no longer measured solely by dynamic efficiency, but also by system thermal balance and long-term parasitic losses during standby.
The integration of advanced topologies, such as bi-directional active balancing in battery management systems (BMS) and high-frequency soft-switching in localized microinverters, demands switches with remarkably low internal resistance. WINSOK’s optimized silicon formulations address this by reducing the specific on-state resistance ($R_{DS(on)}$) per unit area while maintaining robust avalanche characteristics ($E_{AS}$). This ensures safe operation even under grid spikes or abrupt load disruptions.
HONGKONG Olukey INDUSTRY CO., LIMITED is a leading solution provider focusing on the overall design and distribution of high-reliability electronic component ecosystems. Our product architecture is anchored around three high-performing product pillars: WINSOK MOSFETs, Cmsemicon MCUs, and customized PCBA circuit board solutions.
Currently, our robust component ecosystem is widely integrated into mission-critical systems across automotive electronics, military electronics, smart industrial automation, new energy infrastructure, smart medical systems, 5G communications, IoT frameworks, smart homes, and general consumer electronics. Leveraging strategic distribution partnerships with some of the world's most advanced primary silicon fabs, we provide local support across the Asia-Pacific market and globally, delivering sophisticated electronics that elevate product reliability.
WINSOK power semiconductor packaging engineering and structural innovations meet stringent energy density, safety, and reliability metrics.
Energy storage power conversion stages (both DC-DC boost stages and bidirectional AC-DC inverters) operate under demanding thermal constraints. WINSOK’s extensive product lines span from low to high voltages, including 15V, 20V, 30V, 40V, 60V, 80V, 100V, 120V, 150V, 200V, 250V, 300V, 400V, 500V, 600V, and 650V. By using tailored trench gate configurations and charge-balanced structures, we minimize gate charge ($Q_g$) without compromising channel conduction properties.
Our robust package structures, such as DFN3X3-8, DFN5X6-8, TO-252, TO-263, SOP-8, SOT-23, and TO-220, are specifically designed to reduce parasitic source inductance. This suppression of source inductance prevents gate voltage oscillation during high $di/dt$ switching events, protecting systems against spurious turn-on. This packaging variety provides electrical engineers with the flexibility needed to optimize thermals, power density, and layout footprints.
Located in the heart of Shenzhen and Hong Kong’s electronics manufacturing ecosystems, we benefit from integrated wafer processing, lead-frame assembly, and high-speed packaging services. This proximity ensures lower baseline costs and flexible scaling options.
Our capabilities allow us to modify structural dimensions and layout configurations, such as implementing dual-die layouts or incorporating integrated ESD protection diodes directly on the silicon wafer to match specific design requirements.
By coordinating with raw silicon suppliers and holding standard dies in reserve, we provide reliable lead times that insulate our global clients from supply chain disruptions.
Power configurations vary by region due to localized regulations, cooling conditions, and mechanical constraints. WINSOK’s high-power MOSFET and Cmsemicon MCU architectures are designed to meet these regional challenges:
Exporting power systems to markets in North America, the European Union, and the Asia-Pacific region requires strict compliance with international standards. All WINSOK MOSFETs comply with RoHS and REACH directives, ensuring they are free from restricted toxic substances. In addition, our manufacturing facilities adhere to ISO9001:2015 for quality management and ISO14001 for environmental standards, supporting our clients' environmental and sustainability goals.
To simplify regional system integration, Hongkong Olukey Industry provides direct access to application engineering support. Our engineers assist with gate driver tuning, thermal modeling, and EMI testing, helping to resolve design issues early and reduce overall time-to-market.
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