Electronics News
Archive : 18 March 2008 год
Vishay launched a series of half-bridge insulated-gate bipolar transistors (IGBT) in the industry-standard Int-A-Pak package. The series consists of eight 600-V and 1200-V devices that offer a variety of technologies for high hard switching operating frequencies in standard and Ultrafast speeds. The eight devices feature three different IGBT technologies to meet a variety of application needs. The GA100TS60SFPbF and GA200HS60S1PbF offer standard punch-through (PT) IGBT technology, while the, GA200TS60UPbF, GA75TS120UPbF, and GA100TS120UPbF devices utilize Generation 4 technology for tighter parameter distribution and high efficiency. The GB100TS60NPbF, GB150TS60NPbF, and GB200TS60NPbF modules offer Generation 5 non-punch-through (NPT) technology for the added benefit of 10-μs short circuit capabilities.
The GA100TS60SFPbF and GA200HS60S1PbF are standard-speed devices optimized for hard switching operating frequencies up to 1kHz. The other six IGBTs are Ultrafast modules co-packaged with HEXFRED® ultra-soft-recovery anti-parallel diodes for use in bridge configurations. The Ultrafast devices are designed for high operating frequencies from 8kHz to 60kHz in hard switching, and >200kHz in resonant mode. Featuring current ratings from 75A to 200A, Vishay's IGBT series is optimized for isolated and non-isolated converters, switches, inverters, and choppers in high-frequency industrial welding, UPS, SMPS, solar inverter, and motor drive applications. For output inverter TIG welder applications, the IGBTs offer the lowest Vce(on) at rated current available in the market for "S" series modules. The new IGBTs are lead (Pb)-free and provide simple, direct mounting to the heatsink. The devices offer low EMI for less snubbing, and provide very low junction to case thermal resistance.
The editor, Prof. Dr. Ing. Andreas Grzemba, and his team of authors describe all the relevant aspects of this technology, from the presentation of the communications architecture and a variety of development tools to the installation and commissioning of a simple MOST system. The MOST experts conclude by demonstrating the basic structure of MOST gateways, describing the handling of MOST components and their use in standard vehicles.
This reference book offers a comprehensive overview of MOST and provides an easy introduction to the communications architecture. It is aimed at both electronics development engineers and designers with sections relevant to project managers and executives who are concerned with the transmission of multimedia data.
MOST Standard
After an introductory description of the MOST Cooperation and its structure the reader is given an overview of all network architectures in vehicles to facilitate a better understanding of the use cases for MOST. The subsequent introduction to the MOST Technology is an overview of the system architecture, the application framework and the protocols. The next chapter on physical layers starts with an introduction and the basics of the layer structure followed by a system description and concludes with further developments and alternative transmission media. Various MOST interface controllers and network services are listed and explained.
The authors then go on to describe the MOST system design. Two important subjects include the testing of MOST based infotainment systems and the compliance processes. Finalizing the first part of the compilation, the reader is given an overview of the almost 4000 pages of MOST specifications.
MOST Applications
The second part of the book is dedicated to the practical use cases of MOST: Beginning with an introduction of the various development tools of various providers, the structure of a simple MOST system with three communication participants is described. The examples used are a CD changer, an amplifier and a control interface. The connection of external devices via gateways illustrating the versatility of the architecture follow. Production and processing of MOST components as well as MOST in series production conclude the work . The appendix provides an overview of different communications systems and explains the abbreviations and special terminology used.