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: Researchers discover low-grade nonwoven cotton picks up 50 times own weight of oil

add to favorites email to friend print save as pdf

Related Stories

Molecular gate that could keep cancer cells locked up

3 hours ago

In a study published today in Genes & Development, Dr Christian Speck from the MRC Clinical Sciences Centre's DNA Replication group, in collaboration with Brookhaven National Laboratory (BNL), New York, ...

Taking great ideas from the lab to the fab

4 hours ago

A "valley of death" is well-known to entrepreneurs—the lull between government funding for research and industry support for prototypes and products. To confront this problem, in 2013 the National Science ...

SR Labs research to expose BadUSB next week in Vegas

4 hours ago

A Berlin-based security research and consulting company will reveal how USB devices can do damage that can conduct two-way malice, from computer to USB or from USB to computer, and can survive traditional ...

Recommended for you

Android grabs 85% of smartphone market: survey

6 hours ago

Smartphones powered by the Android operating system captured 85 percent of the worldwide market in the second quarter, threatening to marginalize rival platforms, a new survey shows.

Irish bookmaker apologizes for 2010 data breach

7 hours ago

(AP)—Irish betting company Paddy Power announced Thursday it is notifying hundreds of thousands of customers that most of their profile information was stolen in 2010, but hackers did not gain their credit card details ...

Misinformation diffusing online

9 hours ago

The spread of misinformation through online social networks is becoming an increasingly worrying problem. Researchers in India have now modeled how such fictions and diffuse through those networks. They described details ...

User comments : 0