Skip to Content Facebook Feature Image

Alpha and Omega Semiconductor Unveils AmpStack™ Packaging: A Leap Forward in MOSFET Power Density

Business

Alpha and Omega Semiconductor Unveils AmpStack™ Packaging: A Leap Forward in MOSFET Power Density
Business

Business

Alpha and Omega Semiconductor Unveils AmpStack™ Packaging: A Leap Forward in MOSFET Power Density

2026-07-07 22:16 Last Updated At:22:20

SUNNYVALE, Calif.--(BUSINESS WIRE)--Jul 7, 2026--

Alpha and Omega Semiconductor Limited (AOS) (Nasdaq: AOSL), a designer, developer, and global supplier of a broad range of discrete power devices, wide band gap power devices, power management ICs, and modules, today introduced its AOPL66801 80V MOSFET in a half-bridge configuration available in a state-of-the-art DFN6x5 AmpStack™ MOSFET package. This breakthrough packaging technology enables high-density designs for various power conversion applications, ranging from next-gen Megawatt AI factories to everyday power tools.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260707844135/en/

Designed to support high power-density requirements, AOS’ new, innovative advanced packaging uses vertically stacked die technology with two MOSFETs connected as a high-side and low-side MOSFET, forming a half-bridge. This configuration effectively increases power density and maximizes available PCB space compared to a two DFN5x6 discrete MOSFET solution. The AOPL66801 also features an optimized clip design for the switch node connecting the two MOSFETs, which minimizes parasitic inductance between the high-side and low-side MOSFETs. Compared to a standard discrete solution, the AOPL66801 minimizes parasitic inductance on the PCB, reducing phase-node voltage ringing and decreasing stress on the MOSFET.

The PCB layout can affect gate-driving performance and degrade switching performance due to parasitic inductance. The AOPL66801 has a Kelvin sense pin that maintains gate-voltage stability during large di/dt switching and provides a more effective drive path for the high side, reducing losses. In addition, AOPL66801 has a maximum junction temperature of 175 °C, providing increased capability. These factors provide significant system-level improvements that support higher power density and increased operational efficiencies.

"Our new AmpStack™ half-bridge packaging is a game-changer for designers looking to increase power density compared to solutions using two DFN5x6 packages," said Peter H. Wilson, Sr. Director of the MOSFET product line at AOS. "In addition, by designing the package for low source parasitic inductance, we’ve drastically reduced phase node ringing and MOSFET stress. Customers don't just get more power—they get significantly higher application reliability."

Technical Highlights

Pricing and Availability

The AOPL66801 is immediately available in production quantities, with a 16-week lead time. The unit price in 1,000-piece quantities is $6.16.

About AOS

Alpha and Omega Semiconductor Limited, or AOS, is a designer, developer, and global supplier of a broad range of discrete power devices, wide-bandgap power devices, power management ICs, and modules, including a wide portfolio of Power MOSFET,SiC, GaN, IGBT,IPM,TVS,HV Gate Drivers, Power IC, and Digital Power products. AOS has developed extensive intellectual property and technical knowledge that encompasses the latest advancements in the power semiconductor industry, which enables us to introduce innovative products to address the increasingly complex power requirements of advanced electronics. AOS differentiates itself by integrating its Discrete and IC semiconductor process technology, product design, and advanced packaging know-how to develop high-performance power management solutions. AOS’ portfolio of products targets high-volume applications, including personal computers, graphics cards, data centers, AI servers, smartphones, consumer and industrial motor controls, TVs, lighting, automotive electronics, and power supply units for various equipment. For more information, please visit www.aosmd.com.

Forward-Looking Statements

This press release contains forward-looking statements that are based on current expectations, estimates, forecasts, and projections of future performance based on management’s judgment, beliefs, current trends, and anticipated product performance. These forward-looking statements include without limitation, references to the efficiency and capability of new products and the potential to expand into new markets. Forward-looking statements involve risks and uncertainties that may cause actual results to differ materially from those contained in the forward-looking statements. These factors include, but are not limited to, the actual product performance in volume production, the quality and reliability of the product, our ability to achieve design wins, the general business and economic conditions, the state of the semiconductor industry, and other risks as described in the Company’s annual report and other filings with the U.S. Securities and Exchange Commission. Although the Company believes that the expectations reflected in the forward-looking statements are reasonable, it cannot guarantee future results, level of activity, performance, or achievements. You should not place undue reliance on these forward-looking statements. All information provided in this press release is as of today’s date unless otherwise stated, and AOS undertakes no duty to update such information except as required under applicable law.

Innovative vertically stacked packaging DFN6x5 technology in a half-bridge configuration

Innovative vertically stacked packaging DFN6x5 technology in a half-bridge configuration

DETROIT (AP) — Michigan Democratic Senate candidate Abdul El-Sayed will campaign Sunday in Detroit alongside former primary rival Rep. Haley Stevens, marking their first public appearance together in months after a week in which lingering divisions spilled into public view.

The two will be joined by South Carolina Rep. Jim Clyburn, one of the country's most prominent Black politicians, at a get-out-the-vote event at a Detroit church, according to two people familiar with the plans who were not authorized to discuss them publicly.

The joint appearance — their first since a Democratic unity breakfast days after the Aug. 4 primary — comes after weeks of Democrats struggling to unite behind El-Sayed after he defeated Stevens by a razor-thin margin. She received significant support from the Jewish and Black communities, leading to concerns about turnout in the general election.

Tensions again spilled into public view Wednesday when Stevens' fiance, Jason Turkish, told The Detroit News that he would vote for Republican Mike Rogers.

Hours later, Stevens appeared on CNN to reaffirm that she would be voting for El-Sayed, but urged his campaign to “shut out the hate and call it out.”

“Make people who are in my coalition, right, make them feel comfortable about coming to the polls,” said Stevens, who drew significant support from Jewish and Black voters during the primary.

El-Sayed's criticism of Israel, past remarks and associations with controversial streamer Hasan Piker have long drawn concern from some in Michigan's large Jewish community. Turkish and others in the Jewish community have said El-Sayed hasn't done enough to address concerns ahead of the general election.

The latest controversy centered on an ad by Rebellion PAC, an independent left-wing group, that linked U.S. support for Israel to high grocery prices.

“That has nothing to do with our campaign,” El-Sayed said of the ad. “It’s certainly not what I want to be talking about right now.”

Stevens and other Democrats urged him to go further to denounce the content of the advertisement rather than merely distancing himself from it.

Republicans face political challenges of their own, particularly voter dissatisfaction with Trump, the Iran war and high costs. Rogers has remained closely aligned with the president on most issues, appearing alongside him at a Michigan rally Sunday where he credited Trump with bringing manufacturing jobs back to the state.

The rally took place in Port Huron, just across the river from Canada, a country with deep economic ties to Michigan that Trump has targeted with tariffs.

El-Sayed has held campaign events in heavily Republican areas, including Michigan’s Upper Peninsula. His team also released an ad featuring clips of prominent conservative figures praising him, including former Fox News host Tucker Carlson, who has faced accusations of antisemitism that he denies.

But the ad created another source of friction with some Jewish voters.

Rabbi Aaron Starr of Congregation Shaarey Zedek in Southfield criticized both the Rebellion PAC ad and El-Sayed’s campaign ad during a call with reporters.

“We are one week away from the election, and it feels like the temperature has turned way up,” Starr said. “Instead of things getting better over the last seven weeks, they’ve actually gotten worse.”

Rogers, meanwhile, appeared Wednesday with Republican Sen. Ted Cruz of Texas at an event hosted by the Republican Jewish Coalition in Birmingham, Michigan. Cruz called antisemitism “a poison that is ripping the country apart” and accused Democrats of being taken over by “self-proclaimed communists and Islamists.”

Trump has repeatedly attacked El-Sayed’s Muslim faith, calling him a “jihadist” and saying Sunday that he was “on the side of terrorists.”

Both candidates are trying to win over Black voters, particularly in Detroit's Wayne County, where Stevens defeated El-Sayed in the Democratic primary.

El-Sayed is expected to campaign Sunday in the Detroit area with Rep. James Clyburn of South Carolina, part of an effort to shore up support among Black voters. Much of El-Sayed's final campaign stretch has included events in Detroit aimed at increasing turnout.

Rogers has also sought to make inroads with Black voters. He visited a reading remediation program at a Detroit high school and discussed housing costs with residents in Pontiac, north of the city. Earlier this month, his wife handed out $10 gift cards at a gas station.

The gesture drew criticism from Ruby Farmer, a 68-year-old Detroit retiree.

“You’re giving out gas cards in the inner city, you never would come for any other reason,” Farmer said.

While Farmer has a bit of difficulty pronouncing El-Sayed's name, she cast her ballot for him three weeks ago anyways. El-Sayed has come out in opposition to policies by Trump — policies Farmer says directly impact her family.

“I have a special-needs son,” said Farmer. “He depends on Medicaid. Medicaid has been cut, and for home care workers in Michigan all the benefits are on hold.”

Cappelletti reported from Washington.

President Donald Trump, right, greets Mike Rogers, a Michigan Republican candidate for Senate, on stage during a campaign rally at McMorran Place Sports and Entertainment Center, Sunday, Oct. 25, 2026, in Port Huron, Mich. (AP Photo/Julia Demaree Nikhinson)

President Donald Trump, right, greets Mike Rogers, a Michigan Republican candidate for Senate, on stage during a campaign rally at McMorran Place Sports and Entertainment Center, Sunday, Oct. 25, 2026, in Port Huron, Mich. (AP Photo/Julia Demaree Nikhinson)

Sen. Ted Cruz, R-Texas greets supporters for Republican nominee for U.S. Senate Mike Rogers during a campaign event Wednesday, Oct. 28, 2026, in Grosse Pointe Woods, Mich. (AP Photo/Paul Sancya)

Sen. Ted Cruz, R-Texas greets supporters for Republican nominee for U.S. Senate Mike Rogers during a campaign event Wednesday, Oct. 28, 2026, in Grosse Pointe Woods, Mich. (AP Photo/Paul Sancya)

Republican nominee for U.S. Senate Mike Rogers greets supporters during a campaign event Wednesday, Oct. 28, 2026, in Grosse Pointe Woods, Mich. (AP Photo/Paul Sancya)

Republican nominee for U.S. Senate Mike Rogers greets supporters during a campaign event Wednesday, Oct. 28, 2026, in Grosse Pointe Woods, Mich. (AP Photo/Paul Sancya)

Former President Barack Obama, center, joined by Democratic nominee for U.S. Senate Abdul El-Sayed, left, and Democratic gubernatorial nominee and Michigan Secretary of State Jocelyn Benson, right with Secretary of State nominee, Lt. Gov. Garlin Gilchrist, second from right and Attorney General nominee Eli Savit, second from left, clasp hands after a campaign event at Cass Technical High School Saturday, Oct. 24, 2026, in Detroit.(AP Photo/Paul Sancya)

Former President Barack Obama, center, joined by Democratic nominee for U.S. Senate Abdul El-Sayed, left, and Democratic gubernatorial nominee and Michigan Secretary of State Jocelyn Benson, right with Secretary of State nominee, Lt. Gov. Garlin Gilchrist, second from right and Attorney General nominee Eli Savit, second from left, clasp hands after a campaign event at Cass Technical High School Saturday, Oct. 24, 2026, in Detroit.(AP Photo/Paul Sancya)

Michigan Senate candidate Abdul El-Sayed speaks to a crowd during a rally, Sunday, Oct. 25, 2026, in Grand Rapids, Mich. (AP Photo/Kristen Norman)

Michigan Senate candidate Abdul El-Sayed speaks to a crowd during a rally, Sunday, Oct. 25, 2026, in Grand Rapids, Mich. (AP Photo/Kristen Norman)

Recommended Articles