Transformer design and synchronism of DC/DC converter technology develop

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  • source:DELENO CNC Machining
The last few years, in a lot of domains of electronic industry, the company that is engaged in be designed at DC/DC converter and be being made is in bear very big business and competitive pressure. Market demand has turned to minor volume, high density and more efficient product. No matter will tell from cost, bulk or expression, transformer is a crucial parts of an apparatus in DC/DC converter design. Because this everybody is in hard,go optimizing this parts of an apparatus to make the semiconductor of its and lead and phase of passive cell development match. Although circle line transformer traditionally to still be in,a lot of bigger undee factor are used in power source application, but in recent years the emerge in large numbers of a few kinds of new technologies brings distinct benefit for DC/DC converter design, among them one is flat transformer. Independent type and built-in flat transformer. Transformer of independent type flat is to use planar copper to make the copper cash of down-lead frame or printed board be formed to circle block. The space that this means them to be had than the transformer of copper cash is being circled on traditional support wants many small. Accurate copper makes down-lead frame or print winding to make design norms to circle transformer than the line more accurate accord with a requirement, a repeatability level between also get rising. Etch copper makes down-lead frame or print model circle block to be by pile in flat, with high frequency ferrite magnetism core makes the magnetic circuit of transformer. This design makes its make the transformer component of a very small section plane. In the implementation in flat design large cross section accumulates cupreous conductor to make the design of high power density and tall electric current becomes more easy. The fast face capacity of flat winding and ferrite is better than making the product is had medicinal powder hot function. Fall in expensive work frequency especially, efficient a be planar transformer further crucial benefit. Online in circling form transformer, efficiency by " hasten skin effect " go against counter an impact, pass when high frequency electric current namely cylindrical the electron is forced to be centered in copper cash surface by brim of mid flow direction when conductor, reduced electric current to be accumulated through conductor cross section thereby. The viewpoint that be finished from and assembles comes, planar transformer also has excel to circle line transformer. The transformer that wind a string asks manual operation will shuck normally the coating that circling line end, dip in next stannum or manual soldering tin. The suppress on planar transformer or etch the terminals of sheet copper often can form exterior post to install terminal to assemble speed and repeatability in order to grow, reduce cost thereby. With built-in plane transformer is united in wedlock together, this advantage is more outstanding even, here ferrite is crossed from DC/DC converter PCB, and winding submits helix form layer upon layer circle in printed circuit board on. Although they are compared embedded the design takes up more spaces, in recent years, the welcome of planar transformer spends independent type to had risen ceaselessly. Because completely embedded the circuit that transformer uses DC/DC converter board wind a string as his, so each groups are inputted / the circuit that outputs voltage to need a design to differ board. And, to embedded planar design, because engrave coil to need to use for corrode multilayer circuit board, total cost is so higher. A few mixture designs are used advocate board as primary wind a string, serve as with detached small PCB next sub will produce different output tension. This kind of design is very general also. Although embedded the design achieves high power density and own good hot property in order to realize the character with managing space, but to a lot of application, these advantages are mixed by flexibility of cost, lack but interchangeability institute restriction. High yield will be on certain level countervail is embedded the higher cost of the design. More transformer are designed. The design of existing transformer is to be based on magnetic technology. Future, of acoustical coupling technology large-scale adopt will offer transformer the design is smaller the potential that change. Current, the DC/DC converter design of voltage of high output of a few low power had come true on certain level. Acoustical Ou transformer uses the character of the material that suppress report, through oscillatory structure comes coupling electric energy. A converter arouses the resonance mode of this material, be changed to be sub voltage by intercept of the 2nd sub converter next. In the other development that designs in transformer, use frequency of extremely expensive work to be able to produce effective air coupling, because this does not need ferrite. In be like transformer and other magnetism parts of an apparatus output choke to join circuit, be another start greatly, this reduces the help the total undee coefficient that DC/DC designs. Finally, the development of new magnetic material allows taller operation frequency and loss is small, this will conduce to the power source that appoints for offerring smaller transformer. Apparent, the transformer that wind a string already more and more unsuited in be being used at DC/DC converter and other application. Its are large volume, inefficient and cannot satisfy a difficulty of a repeatability to mean them fast by recently the technology is replaced. Embedded with independent type plane transformer has their respective advantage and drawback, one chooses in the design or another depends on applied need. Tap is sub (or advocate class) an innovation of transformer and the advantage that offers tradition of a few excel to design. Emphasize again, application will decide the design that appoints to, whether are they the rightest choice. Future, the development that shifts acoustics transformer from magnetic transformer gives birth the new product of hearten of a few your people it seems that, and the choice of DC/DC converter architect will be increasing. CNC Milling