TMCnews Featured Article
November 13, 2009
Diodes Inc. Launches N-Channel MOSFETs for VoIP Application
By Carolyn J Dawson, TMCnet Contributor
Diodes (News - Alert) Inc., a manufacturer and provider of high-quality application specific products that conform to global standards and with international presence in the broad discrete and analog semiconductor segments, reportedly announced it launched a pair of N-Channel MOSFETs. These MOSFETS provide designers of Voice over Internet Protocol communications appliances with a more hardy and strong solution that is capable of bringing about a substantial reduction in circuit complexity and related expenditure.
The pair of N-Channel MOSFETs has been termed as ZXMN15A27K and ZXMN20B28K. These have been devised with the express objective of conforming to the strict regulations of the primary switch position in transformer based Subscriber Line Interface Circuits with DC/DC converters. This system finds application in several kinds of VoIP applications, ranging from voice over broadband systems, PBX (News - Alert) systems and extending to the Cable and DSL Gateways segments.
Both the recently introduced N-Channel MOSFETs incorporate breakdown voltages of 150V and 200V, respectively. They also have the capability to tolerate the high pulse avalanche energy and commutation channels in the SLIC environment, completely doing away with the need of extra protection circuitry. When these MOSFETs are fitted with the appropriate kind of transformer they can move up line voltages above 150V and also provide several subscriber lines at loop lengths which are greater than 6km.
The MOSFETs can reduce input capacitance. This makes it less complicated to take them from the SLIC controlled IC with reduced or no buffering. Therefore circuit design is further simplified and component count and expenditure is also reduced. The second of the two N-Channel MOSFETs, the ZXMN20B28K also features a low gate drive at an algorithmic level.
Standard & Poor’s Small Cap 600 and Russell 3000 both feature Diodes Incorporated in its indices. The company’s suite of offerings cater to the consumer electronics, computing, communications, industrial and automotive markets and comprise diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, amplifiers and comparator, Hall-effect sensors and temperature sensors, power management appliances like LED drivers and DC to DC switching regulators.
In addition, they also manufacture linear voltage regulators and voltage references. They also can produce special function appliances like USB power switches, load switches, voltage supervisors and motor controllers.
Diodes Inc., a Dallas, Texas-based company, has offices in San Jose, Calif., Taipei, Taiwan, Manchester, England and Neuhaus, Germany via its design centers and in Kansas City, Miss. and Manchester via its wafer fabrication facilities. The firm also has manufacturing facilities in Asia and other parts of the world.
Carolyn John is a Contributor to TMCnet. To read more of her articles, please columnist page.
Edited by Amy Tierney
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