Magnachip Launches New 24V BatteryFET for Tri-Fold Smartphone Battery Protection
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mosfettechnical
A MOSFET is a tiny electronic switch used to control the flow of electricity in chips and circuits, functioning like a faucet that turns current on or off and adjusts how much passes through. Investors watch MOSFETs because their performance, cost and availability affect product power efficiency, manufacturing yields and supply chains for industries from consumer electronics to electric vehicles, which in turn can influence companies’ margins and growth prospects.
super-short channel fettechnical
A super-short channel FET is a tiny transistor whose active region — the gap that controls electron flow — is extremely short compared with older designs. Think of it like a very narrow, short stretch of road that lets cars accelerate and stop more quickly: this enables faster, lower-power chips but is harder and more expensive to manufacture and more sensitive to defects. Investors track this technology because it directly affects a chip maker’s performance, production yield, cost structure, and ability to compete on speed and energy efficiency.
battery protection circuittechnical
A battery protection circuit is a small electronic system built into rechargeable battery packs that prevents dangerous conditions like overcharging, deep discharge, short circuits and overheating, acting like a safety manager that disconnects the cell when needed. Investors care because these circuits influence product safety, regulatory compliance, warranty and recall risk, manufacturing cost and customer trust—factors that affect sales, liability and long‑term value.
electrostatic dischargetechnical
Electrostatic discharge is a sudden flow of electricity between two objects with different electric charges, like the tiny shock you feel after walking on carpet and touching a doorknob. For investors, ESD matters because it can damage electronic components, reduce manufacturing yields, cause product failures or recalls, and increase warranty and repair costs—impacting a company’s production reliability, reputation, and profitability.
esdtechnical
Endoscopic submucosal dissection (ESD) is a minimally invasive medical procedure that uses a thin, flexible tube with tools and a camera to cut out abnormal tissue from the inner lining of the digestive tract in one piece, like removing a stain cleanly from fabric rather than cutting out a whole patch. For investors, outcomes, adoption rates, device approvals and reimbursement for ESD affect market demand for surgical tools, training services and related medical technology, influencing revenue potential and regulatory risk.
- Achieves a 26% reduction in chip size and a 31% improvement in Rss(on) based on Super-Short Channel FET technology
- Expands battery protection solutions for a wide range of mobile devices.
SEOUL, South Korea--(BUSINESS WIRE)--
Magnachip Semiconductor Corporation (NYSE: MX, “Magnachip”) today announced the launch of its new 7th-generation 24V MXT LV MOSFET1 specifically designed for battery protection circuits in next-generation tri-fold smartphones, strengthening its presence in the premium foldable smartphone market. The product is now in mass production and is currently being supplied to a major global smartphone manufacturer, having demonstrated proven performance and reliability.
Magnachip’s New Gen7 24V MOSFET
The newly introduced 24V Dual N-channel MOSFET (MDWC24D058ERH) incorporates Magnachip’s proprietary Super-Short Channel FET (SSCFET®)2 technology, reducing chip size by approximately 26% compared to the previous version. This enables manufacturers to reduce the footprint of the battery protection circuit module (PCM) board by more than 20%, allowing the saved space to be used for increased battery capacity or slimmer device designs.
Tri-fold smartphones feature a new form factor that folds twice and operates three displays simultaneously, enabling high-performance multitasking. As a result, their internal structures have become more complex, power-efficient and reliable, while also becoming increasingly critical in design. Accordingly, these devices demand highly integrated and efficient MOSFET solutions to manage complex internal structures while ensuring power stability.
In addition to tri-fold smartphones, the new product can be applied across a wide range of mobile applications, including wearable devices and tablets. It reduces RSS(on), a major source of power loss, by up to approximately 31%, helping to reduce heat generation. The new product also improves current density per unit area by approximately 48% compared to conventional trench processes, supporting stable voltage control under high-current conditions. In addition, it integrates electrostatic discharge (ESD) protection of more than 2kV, helping to safeguard battery systems from external disturbances.
According to market research firm Omdia, the market for silicon power MOSFETs below 40V, including smartphone batteryFETs, is expected to grow from approximately $4.2 billion in 2025 to approximately $5.2 billion in 2029, representing a compound annual growth rate of about 4.6%. Within this market, the premium smartphone segment, including tri-fold smartphones, is expected to drive growth, supported by increasing demand for high-performance and high-efficiency components.
“Tri-fold smartphones represent high-end mobile devices that require advanced technology and superior component reliability,” said Hyuk Woo, Chief Technology Officer of Magnachip. “Through the supply of this new MOSFET product, we have once again demonstrated Magnachip’s power semiconductor design capabilities and technological competitiveness. Going forward, we will continue to expand our power semiconductor portfolio for a wide range of mobile applications, including smartphones, wearables, and tablets, through ongoing innovation.”
Magnachip is a designer and manufacturer of analog and mixed-signal power semiconductor platform solutions for various applications, including industrial, automotive, communication, consumer and computing. The Company provides a broad range of standard products to customers worldwide. Magnachip, with about 45 years of operating history, owns a substantial number of registered patents and pending applications, and has extensive engineering, design and manufacturing process expertise. For more information, please visit www.magnachip.com. Information on or accessible through Magnachip’s website is not a part of, and is not incorporated into, this release.
1 MXT LV MOSFET(Magnachip eXtreme Trench Low Voltage MOSFET): Magnachip’s low-voltage MOSFET product family below 30V based on its latest trench process technology.
2 SSCFET®(Super-Short Channel FET): Magnachip’s MOSFET design technology that applies a minimized channel-length structure to achieve low on-resistance and high current capability.
