Unitrode IC Corporation has， since its inception，

　　自其創立之初起，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

　　的開發領域，旨在實現電源技術的最新發展。多年以來，

　　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品，以使設計師能夠容易地運用

　　ressions in power suppltechnolo. Over th

　　gressions in power supply technology. Over the

　　拓撲結構中新穎的創新成果。由于這些新型拓撲結構

　　years many new products have been introduced t

　　years many new products have been introduced to

　　之此可拓結，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的開發領域，旨在實現電源技術的最新發展。多年以來，

　　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品，以使設計師能夠容易地運用電

　　ressons n ower sutecnoo. ver t

　　ressons n ower suecnoo. ver e

　　路拓撲結構中新穎的創新成果。由于這些新型拓撲結構均

　　ears mannew roucs ave een nrouce

　　ears many new proucs ave een nrouceo

　　聲稱較之此前可用的拓撲結構有所改善，因此預計隨著

　　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越的方法”已經過去

　　，

　　了將近10年。

　　然而事實情況是：沒有哪一種拓撲結構對于所有應用來說

　　都是最佳的。而且，如果電壓模式控制憑借新式電路和工

　　藝進展得以更新，則將使當今的高性能電源設計師獲益多

　　。

　　。

　　多，并成為電源設計師所關注的一種頗具競爭力的適用候

　　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

　　開發領域，旨在實現電源技術的最新發展。多年以來，

　　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品，以使設計師能夠容易地運用電

　　gressions in power supply technology. Over the

　　ressions in power suppl technolo. Over the

　　拓撲結構中新穎的創新成果。由于這些新型拓撲結構均

　　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.

　　。

　　，并成為電源設計師所關注的一種頗具競爭力的適用

　　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