[6-K] TOWER SEMICONDUCTOR LTD Current Report (Foreign Issuer)

Rhea-AI Filing Summary

Tower Semiconductor Ltd. reported a collaboration with Switch Semiconductor to launch the SW2001, a monolithic 12‑V Point-of-Load buck regulator built on Tower’s 65nm BCD power management platform. The device targets high-demand uses such as servers, AI compute systems, cloud storage, and telecom infrastructure.

The SW2001 uses Switch’s patented Novo-Drive gate driver and Tower’s ultra-low on-resistance LDMOS devices to reach up to 87% efficiency for 12 V-to-1 V conversion at a 20 A load, while cutting switch-node overshoot and radiated emissions. Sampling with evaluation boards is planned for Q1 2026, with volume production later that year. The companies highlight a monolithic power stages market growing at a 10% CAGR to $3.73 billion by 2030.

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

For the month November 2025 No. 3

TOWER SEMICONDUCTOR LTD.

(Translation of registrant's name into English)

Ramat Gavriel Industrial Park

P.O. Box 619, Migdal Haemek, Israel 2310502

  (Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒           Form 40-F ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ☐           No ☒

On November 17, 2025, the Registrant and Switch Semiconductor Announce

Collaboration to Deliver Best-in-Class Efficiency for Next-Generation AI and Server

Power Systems New CPO Foundry Technology Available on Tower’s Leading Sipho and
EIC Optical Platforms

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	TOWER SEMICONDUCTOR LTD.
Date: November 17, 2025	By:	/s/ Nati Somekh
		Name: Nati Somekh
		Title: Corporate Secretary

 

Tower Semiconductor and Switch Semiconductor Collaborate to Deliver Best-in-Class
Efficiency for Next-Generation AI and Server Power Systems

The new, patented technology promises power savings in the high-growth Data Center power management

market leveraging Tower’s advanced 65nm BCD platform

Migdal Haemek, Israel and Richardson, Texas — November 17, 2025 – Tower Semiconductor (NASDAQ/TASE: TSEM), a leading foundry of high-value analog semiconductor solutions, and Switch Semiconductor, a fabless power management company, today announced the SW2001, a high-efficiency, monolithic 12-V Point-of-Load (POL) buck regulator designed on Tower’s industry-leading 65nm BCD platform.

The SW2001 targets demanding applications including servers, AI compute systems, cloud storage, and telecom infrastructure. Featuring Switch Semiconductor’s patented Novo-Drive™ gate driver technology and LDMOS devices with ultra-low on-resistance and best-in-class figure-of-merit from Tower’s 65nm BCD Power Management platform, the SW2001 achieves up to 87% efficiency for 12 V-to-1 V conversion at 20 A load while significantly reducing switch-node overshoot and radiated emissions. Sampling – including evaluation boards – will begin in Q1 2026, with volume production scheduled for later in the year.

According to Mordor Intelligence, the market for monolithic power stages is growing with CAGR of 10% and will reach $3.73 billion by 2030.

Built on Tower Semiconductor’s 65nm 300mm BCD platform, featuring ultra-low-R_on LDMOS devices and low mask count digital and analog CMOS integration capability, the SW2001 benefits from exceptional power conversion efficiency, scalability, and thermal reliability — ideal for AI accelerators and high-performance server systems.

“Tower’s 65nm BCD platform delivers the integration capability, reliability, and industry leading low resistance devices, that enable customers to push the boundaries of power performance,” said Dr. Mete Erturk, Co-GM of the Power Management Business Unit at Tower Semiconductor. “We are excited to collaborate with Switch Semiconductor as they adopt our process technology to bring next-generation power solutions to market.”

“The SW2001 demonstrates how Switch Semi’s Novo-Drive technology and Tower’s advanced BCD process combine to deliver best-in-class efficiency and power density,” said Ross Teggatz, Founder and CEO of Switch Semiconductor. “We see this as the beginning of a broader expansion into innovative switching solutions for robotics, intelligent motion, and data center power systems – addressing the growing demands of next-generation computing and automation.”

The SW2001 offers high efficiency, EMI reduction, and superior power density in a compact 3 × 4 mm package with a 21-lead pinout that is widely used in industry. This enables designers to upgrade performance without redesigning system layouts. The product is the first in a growing roadmap from Switch Semiconductor, which includes development of monolithic POL converters and standalone Novo-Drive gate drivers aimed at high-performance computing and robotics applications.

For additional information on Tower’s Power Management technology platform, please visit here.

For additional information on Switch Semiconductor, please visit here.

About Tower Semiconductor

Tower Semiconductor Ltd. (NASDAQ/TASE: TSEM), the leading foundry of high-value analog semiconductor solutions, provides technology, development, and process platforms for its customers in growing markets such as consumer, industrial, automotive, mobile, infrastructure, medical and aerospace and defense. Tower Semiconductor focuses on creating a positive and sustainable impact on the world through long-term partnerships and its advanced and innovative analog technology offering, comprised of a broad range of customizable process platforms such as SiGe, BiCMOS, mixed-signal/CMOS, RF CMOS, CMOS image sensor, non-imaging sensors, displays, integrated power management (BCD and 700V), photonics, and MEMS. Tower Semiconductor also provides world-class design enablement for a quick and accurate design cycle as well as process transfer services including development, transfer, and optimization, to IDMs and fabless companies. To provide multi-fab sourcing and extended capacity for its customers, Tower Semiconductor owns one operating facility in Israel (200mm), two in the U.S. (200mm), two in Japan (200mm and 300mm) which it owns through its 51% holdings in TPSCo, shares a 300mm facility in Agrate, Italy with STMicroelectronics as well as has access to a 300mm capacity corridor in Intel’s New Mexico factory. For more information, please visit: www.towersemi.com.

Safe Harbor Regarding Forward-Looking Statements

This press release includes forward-looking statements, which are subject to risks and uncertainties. Actual results may vary from those projected or implied by such forward-looking statements. A complete discussion of risks and uncertainties that may affect the accuracy of forward-looking statements included in this press release or which may otherwise affect Tower’s business is included under the heading “Risk Factors” in Tower’s most recent filings on Forms 20-F, F-3, F-4 and 6-K, as were filed with the Securities and Exchange Commission (the “SEC”) and the Israel Securities Authority. Tower does not intend to update, and expressly disclaim any obligation to update, the information contained in this release. 

###

Tower Semiconductor Company Contact:  Orit Shahar | +972-74-7377440 | oritsha@towersemi.com

Tower Semiconductor Investor Relations Contact:  Liat Avraham | +972-4-6506154 | liatavra@towersemi.com

FAQ

What did Tower Semiconductor (TSEM) announce in this Form 6-K?

Tower Semiconductor announced a collaboration with Switch Semiconductor to introduce the SW2001, a high-efficiency 12‑V Point-of-Load buck regulator built on Tower’s 65nm BCD power management platform for AI, server, cloud, and telecom applications.

What is the SW2001 device developed by Tower Semiconductor and Switch Semiconductor?

The SW2001 is a monolithic 12‑V Point-of-Load buck regulator that uses Switch Semiconductor’s patented Novo-Drive gate driver technology and Tower’s 65nm BCD platform, targeting servers, AI compute systems, cloud storage, and telecom infrastructure.

What efficiency does the SW2001 achieve and under what conditions?

The SW2001 achieves up to 87% efficiency for 12 V-to-1 V power conversion at a 20 A load, while also reducing switch-node overshoot and radiated emissions.

When will sampling and volume production of the SW2001 begin?

Sampling of the SW2001, including evaluation boards, is planned to begin in Q1 2026, with volume production scheduled for later in 2026.

Which markets does the SW2001 and related roadmap target?

The SW2001 targets AI accelerators, high-performance servers, cloud storage, telecom infrastructure, and broader applications such as robotics, intelligent motion, and data center power systems, with future products including monolithic POL converters and standalone Novo-Drive gate drivers.

How large is the monolithic power stages market mentioned by Tower Semiconductor?

According to Mordor Intelligence, the market for monolithic power stages is growing at a 10% CAGR and is expected to reach $3.73 billion by 2030.

What packaging and design benefits does the SW2001 provide?

The SW2001 comes in a compact 3 × 4 mm package with a widely used 21-lead pinout, offering high efficiency, EMI reduction, and power density while allowing designers to enhance performance without redesigning existing system layouts.