High Voltage DTMOS Power MOSFET Using A Super Junction Structure To Reduce Power Consumption

Mar 29, 2005

Continuing its leadership role in developing innovative power semiconductors, Toshiba America Electronic Components, Inc. (TAEC) and its parent Toshiba Corp. announced a new power MOSFET called DTMOS, that employs a new super junction structure that enables a reduction in power consumption caused by on-state resistance (RDSON) to approximately 40 percent of the value typically achieved with conventional MOSFETs. Developed by Toshiba, the first device in the DTMOS family, TK15A60S, is targeted for use in power supplies in television sets, home appliances, AC adapters and ballast lighting. Toshiba began shipping samples of the new MOSFET today, and will begin production in April 2005.

The super junction structure, which has vertical paths to allow electrical current to flow through easily on a silicon substrate, realizes lower RDSON than the theoretical limit of silicon. By applying this super junction structure and optimizing the total device, the RDSON for the same area in Toshiba's DTMOS device achieves a 60 percent reduction and its gate charge (Qg) achieves a 40 percent reduction compared with Toshiba's conventional MOSFETs. Consequently, RDSON * Qg, a characteristic that is one important performance index for MOSFETs (in which smaller is better), is one-fourth the value of the company's conventional MOSFETs.

With this announcement, Toshiba is combining a super junction structure with the company's original Deep Trench MOSFET (DTMOS) technology. This is the first in the market using super junction structure combined with deep trench technology.

The first device in the family, designated TK15A60S , features maximum ratings of 15 Amp (A) and 600 volt (V) with on resistance of 0.3 Ohm and will begin sampling in March 2005.

"We're very pleased to introduce the first member of our DTMOS product line, targeted at achieving significant reductions in power consumption in the mainstream switch mode power supply and ballast lighting markets with a 600V, 15A device," said Brach Cox, business development manager, power devices, in Toshiba's Discrete Business Unit.

Background of the Development

Recently, reduction of power consumption and miniaturization of consumer electronics have been in strong demand, and consequently, lower RDSON in power MOSFETs has been a target to improve their power efficiency. In order to respond to the demand for lower power consumption, Toshiba is commercializing a new product utilizing DTMOS technology which can improve efficiency of power supplies. Toshiba succeeded in the development of DTMOS because of its broad repertoire of power MOSFET devices and development expertise and device technology.

Features

-- Due to the super junction structure, RDS ON reaches 0.3 Ohm (maximum).
-- At this time, Toshiba is the first to utilize a super junction structure with deep trench technology on a silicon substrate.
-- The device uses a TO-220SIS package, which is widely used in the market, and enables conventional products to be replaced easily.

Explore further: Ex-Apple chief plans mobile phone for India

add to favorites email to friend print save as pdf

Related Stories

New innovation enhances information storage in electronics

Dec 30, 2013

A team of researchers from the Department of Electrical & Computer Engineering at the National University of Singapore (NUS) Faculty of Engineering has developed a new Magnetoresistive Random Access Memory (MRAM) technology ...

Recommended for you

Ex-Apple chief plans mobile phone for India

11 hours ago

Former Apple chief executive John Sculley, whose marketing skills helped bring the personal computer to desktops worldwide, says he plans to launch a mobile phone in India to exploit its still largely untapped ...

Health care site flagged in Heartbleed review

23 hours ago

People with accounts on the enrollment website for President Barack Obama's signature health care law are being told to change their passwords following an administration-wide review of the government's vulnerability to the ...

Airbnb rental site raises $450 mn

Apr 19, 2014

Online lodging listings website Airbnb inked a $450 million funding deal with investors led by TPG, a source close to the matter said Friday.

Four questions about missing Malaysian plane answered

Apr 19, 2014

Travelers at Asian airports have asked questions about the March 8 disappearance of Malaysia Airlines Flight 370 while en route from Kuala Lumpur to Beijing. Here are some of them, followed by answers.

Android gains in US, basic phones almost extinct

Apr 18, 2014

The Google Android platform grabbed the majority of mobile phones in the US market in early 2014, as consumers all but abandoned non-smartphone handsets, a survey showed Friday.

User comments : 0

More news stories

Ex-Apple chief plans mobile phone for India

Former Apple chief executive John Sculley, whose marketing skills helped bring the personal computer to desktops worldwide, says he plans to launch a mobile phone in India to exploit its still largely untapped ...

Airbnb rental site raises $450 mn

Online lodging listings website Airbnb inked a $450 million funding deal with investors led by TPG, a source close to the matter said Friday.

Health care site flagged in Heartbleed review

People with accounts on the enrollment website for President Barack Obama's signature health care law are being told to change their passwords following an administration-wide review of the government's vulnerability to the ...

A homemade solar lamp for developing countries

(Phys.org) —The solar lamp developed by the start-up LEDsafari is a more effective, safer, and less expensive form of illumination than the traditional oil lamp currently used by more than one billion people ...

NASA's space station Robonaut finally getting legs

Robonaut, the first out-of-this-world humanoid, is finally getting its space legs. For three years, Robonaut has had to manage from the waist up. This new pair of legs means the experimental robot—now stuck ...

Filipino tests negative for Middle East virus

A Filipino nurse who tested positive for the Middle East virus has been found free of infection in a subsequent examination after he returned home, Philippine health officials said Saturday.

Egypt archaeologists find ancient writer's tomb

Egypt's minister of antiquities says a team of Spanish archaeologists has discovered two tombs in the southern part of the country, one of them belonging to a writer and containing a trove of artifacts including reed pens ...