Unitrode IC Corporation has， since its inception，

　　自其創(chuàng)立之初起，Unitrode IC公司就活躍于尖端控制電

　　been active in the development of leadin-ed

　　been active in the development of leading-edge

　　的開(kāi)發(fā)領(lǐng)域，旨在實(shí)現(xiàn)電源技術(shù)的最新發(fā)展。多年以來(lái)，

　　control circuits to implement state-of-the-art procontrol circuits to implement state-of-the-art pro公司推出了許多新產(chǎn)品，以使設(shè)計(jì)師能夠容易地運(yùn)用

　　ressions in power suppltechnolo. Over th

　　gressions in power supply technology. Over the

　　拓?fù)浣Y(jié)構(gòu)中新穎的創(chuàng)新成果。由于這些新型拓?fù)浣Y(jié)構(gòu)

　　years many new products have been introduced t

　　years many new products have been introduced to

　　之此可拓結(jié)，因此

　　allow designers to readily apply new innovations i

　　allow designers to readily apply new innovations in

　　circuit topologies. Since each of these new topolocircuit topologies. Since each of these new topolo一

　　gies purports to offer improvements over that whic

　　gies purports to offer improvements over that which

　　“一”was previously available， it is reasonable to expec

　　was previously available， it is reasonable to expect

　　some confusion to be generated with the introducsome confusion to be generated with the introduc。

　　tion of the UCC3570 - a new voltage-mod

　　tion of the UCC3570 - a new voltage-mode

　　一controller introduced almost 10 years after we tol

　　controller introduced almost 10 years after we told

　　：

　　the world that current-mode was such a superio

　　the world that current-mode was such a superior

　　。，

　　approach.

　　approach.

　　The truth， however， is that there is no single topol選方案。

　　ogy which is optimum for all applications. Moreover

　　ogy which is optimum for all applications. Moreover，

　　voltage-mode control - if updated with modern cirvoltage-mode control - if updated with modern circuit and process developments - has much to offe

　　it and rocess develoments - has much to offsiners of toda’s hih-erformance sulies anitrode IC Cororation hassince its incetion

　　自其創(chuàng)立之初起，Unitrode IC公司就活躍于尖端控制電路

　　been active in the develoment of leadin-ede

　　een active in the develoment of leadin-ed的開(kāi)發(fā)領(lǐng)域，旨在實(shí)現(xiàn)電源技術(shù)的最新發(fā)展。多年以來(lái)，

　　control circuits to imlement state-of-the-art rcontrocrcuts to mement state-o-te-art ro該公司推出了許多新產(chǎn)品，以使設(shè)計(jì)師能夠容易地運(yùn)用電

　　ressons n ower sutecnoo. ver t

　　ressons n ower suecnoo. ver e

　　路拓?fù)浣Y(jié)構(gòu)中新穎的創(chuàng)新成果。由于這些新型拓?fù)浣Y(jié)構(gòu)均

　　ears mannew roucs ave een nrouce

　　ears many new proucs ave een nrouceo

　　聲稱(chēng)較之此前可用的拓?fù)浣Y(jié)構(gòu)有所改善，因此預(yù)計(jì)隨著

　　aow esgners o reay appy new nnovaons n

　　ow esgners o reay appy new nnovaons

　　UCC3570的推出人們將產(chǎn)生某些困惑，這是合乎情理的。

　　crcuopooges. nce eacoese new opo. UCC3570 是一款新型電壓模式控制器，它的推出距離我

　　們告知世界“電流模式是一種如此優(yōu)越的方法”已經(jīng)過(guò)去

　　，

　　了將近10年。

　　然而事實(shí)情況是：沒(méi)有哪一種拓?fù)浣Y(jié)構(gòu)對(duì)于所有應(yīng)用來(lái)說(shuō)

　　都是最佳的。而且，如果電壓模式控制憑借新式電路和工

　　藝進(jìn)展得以更新，則將使當(dāng)今的高性能電源設(shè)計(jì)師獲益多

　　。

　　。

　　多，并成為電源設(shè)計(jì)師所關(guān)注的一種頗具競(jìng)爭(zhēng)力的適用候

　　The truthhoweveris that there is no sinle toole r選方案。

　　ownitrode IC Corporation has， since its inception，

　　其創(chuàng)立之初起，Unitrode IC公司就活躍于尖端控制電

　　been active in the development of leading-edge

　　een active in the develoment of leadin-ede

　　開(kāi)發(fā)領(lǐng)域，旨在實(shí)現(xiàn)電源技術(shù)的最新發(fā)展。多年以來(lái)，

　　control circuits to implement state-of-the-art proontrol circuits to implement state-of-the-art pro公司推出了許多新產(chǎn)品，以使設(shè)計(jì)師能夠容易地運(yùn)用電

　　gressions in power supply technology. Over the

　　ressions in power suppl technolo. Over the

　　拓?fù)浣Y(jié)構(gòu)中新穎的創(chuàng)新成果。由于這些新型拓?fù)浣Y(jié)構(gòu)均

　　years many new products have been introduced to

　　ears man new products have been introduced to

　　之此可因此

　　allow designers to readily apply new innovations in

　　llow desiners to readil appl new innovations in

　　circuit topologies. Since each of these new topoloircuit topoloies. Since each of these new topolo一

　　gies purports to offer improvements over that which

　　ies purports to offer improvements over that which

　　“一”was previously available， it is reasonable to expect

　　as previousl available， it is reasonable to expect

　　some confusion to be generated with the introducome confusion to be enerated with the introduc。

　　tion of the UCC3570 - a new voltage-mode

　　ion of the UCC3570 - a new voltae-mode

　　一controller introduced almost 10 years after we told

　　ontroller introduced almost 10 ears after we told

　　：

　　the world that current-mode was such a superior

　　he world approach.

　　。

　　，并成為電源設(shè)計(jì)師所關(guān)注的一種頗具競(jìng)爭(zhēng)力的適用

　　The truth， however， is that there is no single topolhe truth， however， is that there is no sinle topol方案。

　　ogy which is optimum for all applications. Moreover，

　　which is optimum for all applications. Moreover，

　　voltage-mode control - if updated with modern ciroltae-mode control - if udated with modern circuit and process developments - has much to offer

　　i n r vlmn - h mh ffr

　　desiners of toda’s hih-erformance sulies and