Explore our core low and medium-voltage MOSFET products designed for lithium-ion protective circuits, featuring optimized DFN and SOP footprints.
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. We 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.
Understanding critical parameters in lithium-ion battery management systems to maximize system reliability and thermal efficiency.
Minimizing conduction loss is paramount in high-drain Li-ion protection circuits. Lower resistance translates to decreased heat generation and longer runtime.
Advanced packaging technologies like DFN3x3 and DFN5x6 optimize the layout, ensuring efficient heat transfer from the junction to the board.
Superior avalanche capabilities and ruggedness protect systems against peak voltage spikes during abrupt battery cutoff operations.
Battery Protection Circuit Modules (PCM) act as the primary safety mechanism for Lithium-ion battery packs. In typical battery protection designs, MOSFETs are placed in series with the battery pack pack-negative (low-side) or pack-positive (high-side) terminals. When an overcurrent or short-circuit event occurs, the BMS controller drives the MOSFET gate voltage low (for N-channel low-side architectures) to isolate the cell pack from external load interfaces.
Selecting the ideal power MOSFET for lithium-ion battery management requires balancing three main operational parameters:
| Target Parameter | Standard Requirement | WINSOK SGT Advantage | Impact on BMS Efficiency |
|---|---|---|---|
| On-State Resistance (RDS(on)) | < 10 mΩ (Typical) | Down to 1.8 mΩ (DFN5x6) | Reduces core heat footprint by up to 35% |
| Gate Charge (Qg) | High capacitive loads | Low Miller capacitance design | Speeds up short-circuit isolation within <10μs |
| Thermal Impedance (RθJC) | > 5.0 °C/W (SOP-8) | < 1.2 °C/W (DFN5x6 Exposed Pad) | Allows higher continuous current without heat sinking |
Leveraging specialized distribution expertise, quality-driven component engineering, and complete technology integration.
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.
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. This represents extensive coverage of medium-voltage and low-voltage MOSFET product lines on the market.
Complementing this is Cmsemicon MCU, a microcontroller company born in Shenzhen, with rich product types and technology research and development experience, enabling integrated MCU + MOSFET system design.
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.
Developing tomorrow's power efficiency platforms through active material design and novel geometric structures.
Standard Trench MOSFET layouts are shifting to Split-Gate Trench (SGT) architectures. By incorporating a shielding electrode, we reduce Gate-to-Drain Charge (Qgd), yielding lower switching loss and high-frequency capabilities.
For high-density consumer electronics and automotive applications, our development team is actively exploring GaN architectures to complement silicon lines, targeting power conversions exceeding 99%.
Solder-joint-free copper clip architectures are replacing gold-wire bonding. This change scales down package parasitics, providing thermal dissipation properties required by high-power cell systems.
Scaling reliable power management platforms across consumer, industrial, and high-safety automotive applications.
Operating voltages up to 100V with AEC-Q101 compliant characteristics ensure long-term stability in electric auxiliary heating, seat management, and high-reliability traction system safety relays.
Designed to handle sustained heavy loads in home battery setups and utility-scale energy grids. Our DFN5x6 and TO-220 devices manage dynamic surges while minimizing system operating temperatures.
Optimized high-drain cells require compact, robust MOSFET arrays. Our low-conduction switches provide dependable motor control protection, reducing maintenance requirements for fleets.
By manufacturing within top-tier automated wafer foundries and dedicated packaging facilities in mainland China, Olukey ensures end-to-end supply chain continuity. Automated visual inspection (AOI) lines, integrated tester machinery, and strict statistical process control (SPC) minimize manufacturing variation.
We maintain structured safety stock profiles at our Hong Kong warehousing hub to mitigate shipping disruptions, offering global clients reliable logistics schedules.
Technical evaluation samples, certifications, and compliance support for engineering projects.
We provide qualifying engineering departments with free sample parts (such as DFN3x3-8 or DFN5x6-8 components) for evaluation, prototyping, and bench testing.
Every product batch is manufactured in compliance with international environmental standards, including RoHS, REACH, and UL flammability ratings.
Our Field Application Engineers (FAE) assist with schematic reviews, PCB thermal layout optimization, and resolving high-frequency ringing issues.
Expert engineering insights regarding MOSFET integration in Lithium-Ion battery protection boards.
Complementary high-current switching devices, dual N+P channels, and medium-voltage MOSFET solutions.
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