tag: Wolfspeed

Week In Review: Manufacturing, Test
By Mark LaPedus - 09 Aug, 2019 - Comments: 0

Fab tools Lam Research has rolled out two new tools for use in the production of 3D NAND. The first tool, called the VECTOR DT, is geared for backside deposition. The second system, the EOS GS, is a wet etch tool for film removal on backside and bevel. Designed to control the wafer bow in 3D NAND manufacturing, the VECTOR DT system is the latest addition to Lam’s plasma-enhanced chemical ... » read more

Cloudy Outlook Seen For IC Biz
By Mark LaPedus - 29 Jul, 2019 - Comments: 0

After a slowdown in the first half of 2019, chipmakers and equipment vendors face a cloudy outlook for the second half of this year, with a possible recovery in 2020. Generally, the semiconductor industry began to see a slowdown starting in mid- to late-2018, which extended into the first half of 2019. During the first half of this year, memory and non-memory vendors were negatively impacted... » read more

200mm Cools Off, But Not For Long
By Mark LaPedus - 18 Jul, 2019 - Comments: 4

After years of acute shortages, 200mm fab capacity is finally loosening up, but the supply/demand picture could soon change with several challenges on the horizon. 200mm fabs are older facilities with more mature processes, although they still churn out a multitude of today’s critical chips, such as analog, MEMS, RF and others. From 2016 to 2018, booming demand for these and other chips ca... » read more

A Novel Design Method of Highly Efficient Saturated Power Amplifier Based On Self-Generated Harmonic Currents
By Wolfspeed, a Cree Company - 17 Jul, 2019 - Comments: 0

A novel design method without requiring the special harmonic termination circuit for a highly efficient power amplifier (PA) is proposed. The proposed PA is driven into saturated operation, from the linear to knee region, by adjusting the only fundamental load, and the saturated operation induces self-generated harmonic currents. The current and voltage waveforms can be shaped easily by the har... » read more

DC Bus Switching Performance as Determined by Commutation Loop Parasitics and Switching Dynamics
By Wolfspeed, a Cree Company - 19 Jun, 2019 - Comments: 0

In this article a 250 kW all-SiC inverter evaluation kit designed around low-inductance, high-speed power modules is used to demonstrate the DC bus switching performance resulting from the interaction among commutation loop parasitics and the switching dynamics. The interplay among the DC bus structure parasitics and near-RF switching dynamics can be quantified in both the time and frequency do... » read more

Inspection, Metrology Challenges Grow For SiC
By Mark LaPedus - 11 Jun, 2019 - Comments: 2

Inspection and metrology are becoming more critical in the silicon carbide (SiC) industry amid a pressing need to find problematic defects in current and future SiC devices. Finding defects always has been a challenging task for SiC devices. But it’s becoming more imperative to find killer defects and reduce them as SiC device vendors begin to expand their production for the next wave of a... » read more

SiC Demand Growing Faster Than Supply
By Mark LaPedus - 23 May, 2019 - Comments: 2

The silicon carbide (SiC) industry is in the midst of a major expansion campaign, but suppliers are struggling to meet potential demand for SiC power devices and wafers in the market. In just one example of the expansion efforts, Cree plans to invest up to $1 billion to increase its SiC fab and wafer capacities. As part of the plan, Cree is developing the world’s first 200mm (8-inch) SiC f... » read more

Week In Review: Manufacturing, Test
By Mark LaPedus - 17 May, 2019 - Comments: 0

Market research In terms of overall IC sales, Intel has replaced Samsung as the number one quarterly semiconductor supplier in 4Q18 after losing the lead spot to Samsung in 2Q17, according to IC Insights. “While Samsung held the full-year number one ranking in 2017 and 2018, Intel is forecast to easily recapture the number one ranking for the full-year of 2019, a position it previously held ... » read more

Week In Review: Manufacturing, Test
By Mark LaPedus - 10 May, 2019 - Comments: 0

Trade More trade news: "The Trump administration is hiking duties on $200 billion worth of Chinese products to 25% from 10%," according to CNBC. The following is attributed to Gary Shapiro, president and CEO of the Consumer Technology Association (CTA), in response to President Trump’s plan to increase tariffs on $200 billion worth of Chinese imports to 25%: “The president is seeking a bet... » read more

Week In Review: Manufacturing, Test
By Mark LaPedus - 03 May, 2019 - Comments: 0

Chipmakers Cree posted its results for the third quarter of fiscal 2019 ended March 31. Revenue from continuing operations was $274 million, a 22% increase compared to revenue from continuing operations of $225 million in the like period a year ago. As previously announced, Cree executed a definitive agreement to sell its Lighting Products business to IDEAL. As a result, Cree’s Wolfspeed ... » read more

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