{"id":2743,"date":"2025-02-14T16:43:38","date_gmt":"2025-02-14T08:43:38","guid":{"rendered":"https:\/\/www.siproin-ic.com\/?p=2743"},"modified":"2025-09-18T15:56:20","modified_gmt":"2025-09-18T07:56:20","slug":"synchronous-and-asynchronous-rectification-in-dc-dc-chips","status":"publish","type":"post","link":"https:\/\/www.siproin-ic.com\/tr\/synchronous-and-asynchronous-rectification-in-dc-dc-chips\/","title":{"rendered":"DC\/DC \u00e7iplerde senkron ve asenkron do\u011frultma"},"content":{"rendered":"<p>Bug\u00fcn, anahtarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131nda \u00e7ok \u00f6nemli iki kavramdan bahsedelim - senkron do\u011frultma ve asenkron do\u011frultma. Anahtarlamal\u0131 g\u00fc\u00e7 kayna\u011f\u0131, g\u00fc\u00e7 t\u00fcp\u00fc a\u00e7\u0131ld\u0131\u011f\u0131nda end\u00fcktif \u015farj enerjisi depolamas\u0131na dayan\u0131r ve voltaj d\u00f6n\u00fc\u015f\u00fcm\u00fcn\u00fc ger\u00e7ekle\u015ftirmek i\u00e7in g\u00fc\u00e7 t\u00fcp\u00fcn\u00fcn ba\u011flant\u0131s\u0131 kesildi\u011finde end\u00fcktif enerji serbest b\u0131rak\u0131l\u0131r. G\u00fc\u00e7 t\u00fcp\u00fcn\u00fcn ba\u011flant\u0131s\u0131 kesildikten sonra, end\u00fcktans, ak\u0131m bile\u015fenlerinin se\u00e7iminde farkl\u0131 olan bir ak\u0131m d\u00f6ng\u00fcs\u00fcne sahip olmak i\u00e7in enerjiyi serbest b\u0131rak\u0131r, farkl\u0131 d\u00fczeltme y\u00f6ntemleri, yani senkron d\u00fczeltme ve asenkron d\u00fczeltme i\u00e7erecektir. Peki aralar\u0131ndaki fark nedir?<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Asenkron BUCK<\/b><\/strong><\/p>\n<p>Sadece bir MOS t\u00fcp\u00fc (g\u00fc\u00e7 t\u00fcp\u00fc) vard\u0131r ve s\u00fcrekli ak\u0131m eleman\u0131, do\u011fal do\u011frultma i\u015flemine ait olan ve senkronize etmek i\u00e7in \u00f6zel bir kontrol devresine ihtiya\u00e7 duymayan bir diyottur, bu nedenle buna asenkron do\u011frultma denir.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2744\" src=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521217857-300x145.png\" alt=\"\" width=\"300\" height=\"145\" srcset=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521217857-300x145.png 300w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521217857-18x9.png 18w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521217857.png 393w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Asenkron do\u011frultucu devresi<\/p>\n<p><strong><b>Senkron BUCK<\/b><\/strong><\/p>\n<p>Do\u011frultucu kay\u0131plar\u0131n\u0131 azaltmak i\u00e7in do\u011frultucu diyotlar\u0131n yerine \u00e7ok d\u00fc\u015f\u00fck a\u00e7ma direncine sahip \u00f6zel g\u00fc\u00e7 MOS kullan\u0131n. G\u00fc\u00e7 MOS'u voltaj kontrol cihaz\u0131na aittir ve a\u00e7\u0131k oldu\u011funda volt-amper \u00f6zellikleri do\u011frusald\u0131r. G\u00fc\u00e7 MOS'u do\u011frultucu olarak kullan\u0131ld\u0131\u011f\u0131nda, kap\u0131 voltaj\u0131 do\u011frultulacak voltaj\u0131n faz\u0131 ile senkronize edilmelidir, bu nedenle buna senkron do\u011frultma denir.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2745\" src=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521421786-300x142.png\" alt=\"\" width=\"300\" height=\"142\" srcset=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521421786-300x142.png 300w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521421786-18x8.png 18w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521421786.png 375w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Senkron do\u011frultucu devresi<\/p>\n<p><strong><b>Asenkronun avantajlar\u0131 ve dezavantajlar\u0131:<\/b><\/strong><\/p>\n<ul>\n<li>Y\u00fcksek stabilite<\/li>\n<\/ul>\n<p>\u00c7\u0131k\u0131\u015f ak\u0131m\u0131n\u0131n de\u011fi\u015fmesi durumunda, Schottky diyotun voltaj d\u00fc\u015f\u00fc\u015f\u00fc olduk\u00e7a sabittir ve ayn\u0131 anda \u00fcst ve alt t\u00fcplerde senkron do\u011frultucu devre olmayacakt\u0131r, bu nedenle kararl\u0131l\u0131\u011f\u0131 senkron do\u011frultucu devreden daha y\u00fcksektir.<\/p>\n<ul>\n<li>D\u00fc\u015f\u00fck Verimlilik<\/li>\n<\/ul>\n<p>Schottky diyottan akan ak\u0131m b\u00fcy\u00fck oldu\u011funda, diyot \u00fczerindeki s\u00fcrekli ak\u0131m taraf\u0131ndan \u00fcretilen voltaj nispeten b\u00fcy\u00fckt\u00fcr, \u00e7\u0131k\u0131\u015f voltaj\u0131 \u00e7ok d\u00fc\u015f\u00fck oldu\u011funda, diyotun voltaj d\u00fc\u015f\u00fc\u015f\u00fc b\u00fcy\u00fck bir oran\u0131 olu\u015fturur, nispeten b\u00fcy\u00fck g\u00fc\u00e7 t\u00fcketir, bu nedenle y\u00fcksek ak\u0131m ve d\u00fc\u015f\u00fck voltaj \u00e7\u0131k\u0131\u015f\u0131 oldu\u011funda verimlilik d\u00fc\u015f\u00fckt\u00fcr.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><b>Senkronizasyonun avantajlar\u0131 ve dezavantajlar\u0131:<\/b><\/strong><\/p>\n<ul>\n<li>Etkili<\/li>\n<\/ul>\n<p>MOS parametrelerinde, \u00e7ok \u00f6nemli bir parametre MOS t\u00fcp\u00fcn\u00fcn a\u00e7ma direncidir. Genel olarak, MOS t\u00fcp\u00fcn\u00fcn i\u00e7 direnci \u00e7ok k\u00fc\u00e7\u00fckt\u00fcr, genellikle miliohm seviyesindedir, bu nedenle a\u00e7ma-kapama sonras\u0131nda MOS t\u00fcp\u00fcn\u00fcn bas\u0131n\u00e7 d\u00fc\u015f\u00fc\u015f\u00fc nispeten d\u00fc\u015f\u00fckt\u00fcr.<\/p>\n<p>Ayn\u0131 ko\u015fullar alt\u0131nda, genel MOS t\u00fcp\u00fcn\u00fcn a\u00e7\u0131k voltaj d\u00fc\u015f\u00fc\u015f\u00fc, s\u0131radan Schottky diyotunun pozitif a\u00e7\u0131k voltaj d\u00fc\u015f\u00fc\u015f\u00fcnden \u00e7ok daha k\u00fc\u00e7\u00fckt\u00fcr, bu nedenle MOS t\u00fcp\u00fcn\u00fcn kay\u0131p g\u00fcc\u00fc, ayn\u0131 ak\u0131m ko\u015fulu alt\u0131nda diyotunkinden \u00e7ok daha k\u00fc\u00e7\u00fckt\u00fcr, bu nedenle MOS t\u00fcp\u00fcn\u00fcn verimlili\u011fi diyotunkinden daha y\u00fcksek olacakt\u0131r.<\/p>\n<ul>\n<li>\u0130stikrar eksikli\u011fi<\/li>\n<\/ul>\n<p>MOS t\u00fcp\u00fcn\u00fcn bir s\u00fcr\u00fcc\u00fc devresine ihtiyac\u0131 vard\u0131r, senkron do\u011frultucunun MOS t\u00fcp\u00fc i\u00e7in ek bir kontrol devresi eklemesi gerekir, b\u00f6ylece \u00fcst ve alt iki MOS t\u00fcp\u00fc senkronize edilebilir, asenkron diyot do\u011fal olarak d\u00fczeltilirken, ek bir s\u00fcr\u00fcc\u00fc kontrol devresi eklemeye gerek yoktur, bu nedenle asenkron, senkron devre i\u00e7in daha karma\u015f\u0131k olacakt\u0131r. Tasar\u0131m devresi ne kadar karma\u015f\u0131k olursa, kararl\u0131l\u0131k o kadar az g\u00fcvenilir olur.<\/p>\n<p><strong><b>Senkron asenkron se\u00e7enekler<\/b><\/strong><\/p>\n<p>Bu hususlar\u0131 dikkate almak i\u00e7in esas olarak verimlilik, maliyet, g\u00fcvenilirlik ve PCB yerle\u015fim alan\u0131ndan senkron veya asenkron kullanmay\u0131 se\u00e7in. Daha y\u00fcksek \u00e7\u0131k\u0131\u015f voltaj\u0131, daha y\u00fcksek g\u00f6rev d\u00f6ng\u00fcs\u00fc i\u00e7in, asenkron sistemdeki Schottky diyot ve senkron do\u011frultucunun g\u00fc\u00e7 t\u00fcketimi daha azd\u0131r ve senkron do\u011frultucu ile asenkron do\u011frultucu aras\u0131ndaki d\u00f6n\u00fc\u015f\u00fcm verimlili\u011fi fark\u0131 belirgin de\u011fildir; Ve d\u00fc\u015f\u00fck \u00e7\u0131k\u0131\u015f voltaj\u0131, d\u00fc\u015f\u00fck g\u00f6rev d\u00f6ng\u00fcs\u00fc, b\u00fcy\u00fck ak\u0131m uygulamalar\u0131 i\u00e7in, senkron do\u011frultman\u0131n d\u00f6n\u00fc\u015f\u00fcm verimlili\u011fi nispeten y\u00fcksektir. \u00d6zetle, gerekli verimlilik nispeten y\u00fcksekse ve maliyet ve g\u00fcvenilirlik gereksinimleri \u00e7ok y\u00fcksek de\u011filse, senkron do\u011frultma program\u0131n\u0131 se\u00e7ebilirsiniz; Verimlilik gereksinimleri \u00e7ok y\u00fcksek de\u011filse, asenkron tercih edilir ve g\u00fcvenilirli\u011fi daha iyidir.<\/p>\n<p>A\u015fa\u011f\u0131daki DC-DC d\u00fc\u015f\u00fcr\u00fcc\u00fc \u00e7ipimizdir:<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-2747\" src=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521560797-1-300x232.png\" alt=\"\" width=\"531\" height=\"411\" srcset=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521560797-1-300x232.png 300w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521560797-1-768x594.png 768w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521560797-1-16x12.png 16w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739521560797-1.png 800w\" sizes=\"(max-width: 531px) 100vw, 531px\" \/><\/p>\n<p><strong><b>Asenkron buck tipik devre \u015femas\u0131 (\u00f6rnek olarak SSP9480)<\/b><\/strong><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-2748\" src=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522128008-300x131.png\" alt=\"\" width=\"405\" height=\"177\" srcset=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522128008-300x131.png 300w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522128008-18x8.png 18w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522128008.png 553w\" sizes=\"(max-width: 405px) 100vw, 405px\" \/><\/p>\n<p>SSP9480, entegre bir g\u00fc\u00e7 MOSFET t\u00fcp\u00fcne sahip bir kademeli anahtarlama reg\u00fclat\u00f6r\u00fcd\u00fcr. H\u0131zl\u0131 d\u00f6ng\u00fc tepkisi ve ak\u0131m modu kontrol\u00fc ile geli\u015ftirilmi\u015f d\u00f6ng\u00fc kararl\u0131l\u0131\u011f\u0131.<\/p>\n<p>Geni\u015f bir giri\u015f gerilimi aral\u0131\u011f\u0131 (4,5V ila 80V), s\u00fcrekli 1,2A ak\u0131m ile y\u00fcksek verimli \u00e7\u0131k\u0131\u015f sa\u011flayarak mobil \u00e7evresel giri\u015f ko\u015fulu alt\u0131nda \u00e7e\u015fitli kademeli g\u00fc\u00e7 d\u00f6n\u00fc\u015ft\u00fcrme uygulamalar\u0131na olanak tan\u0131r. 0,1\u03bcA kapatma statik ak\u0131m\u0131, pille \u00e7al\u0131\u015fan uygulamalar i\u00e7in uygundur.<\/p>\n<p><strong><b>Senkron buck'\u0131n tipik devre \u015femas\u0131 (\u00f6rnek olarak H9108)\u00a0<\/b><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2749\" src=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522283708-300x202.png\" alt=\"\" width=\"300\" height=\"202\" srcset=\"https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522283708-300x202.png 300w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522283708-18x12.png 18w, https:\/\/www.siproin-ic.com\/wp-content\/uploads\/2025\/02\/1739522283708.png 554w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>H9108, dahili g\u00fc\u00e7 MOSFET'lerine sahip y\u00fcksek frekansl\u0131, senkron, do\u011frultulmu\u015f, buck anahtarlama modlu bir d\u00f6n\u00fc\u015ft\u00fcr\u00fcc\u00fcd\u00fcr. \u00c7al\u0131\u015fma giri\u015f aral\u0131\u011f\u0131nda m\u00fckemmel y\u00fck ve hat reg\u00fclasyonu ile 2A'e kadar s\u00fcrekli ak\u0131m \u00e7\u0131k\u0131\u015f kapasitesine sahip \u00e7ok kompakt bir \u00e7\u00f6z\u00fcm sunar: 4V ila 18V.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Bug\u00fcn, anahtarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131nda \u00e7ok \u00f6nemli iki kavramdan bahsedelim - senkron do\u011frultma ve asenkron do\u011frultma. Anahtarlamal\u0131 g\u00fc\u00e7 kayna\u011f\u0131, g\u00fc\u00e7 t\u00fcp\u00fc a\u00e7\u0131ld\u0131\u011f\u0131nda end\u00fcktif \u015farj enerjisi depolamas\u0131na dayan\u0131r ve voltaj d\u00f6n\u00fc\u015f\u00fcm\u00fcn\u00fc ger\u00e7ekle\u015ftirmek i\u00e7in g\u00fc\u00e7 t\u00fcp\u00fcn\u00fcn ba\u011flant\u0131s\u0131 kesildi\u011finde end\u00fcktif enerji serbest b\u0131rak\u0131l\u0131r. G\u00fc\u00e7 t\u00fcp\u00fcn\u00fcn ba\u011flant\u0131s\u0131 kesildikten sonra, end\u00fcktans, ak\u0131m bile\u015fenlerinin se\u00e7iminde farkl\u0131 olan bir ak\u0131m d\u00f6ng\u00fcs\u00fcne sahip olmak i\u00e7in enerjiyi serbest b\u0131rak\u0131r, farkl\u0131 d\u00fczeltme y\u00f6ntemleri, yani senkron d\u00fczeltme ve asenkron d\u00fczeltme i\u00e7erecektir. Peki aralar\u0131ndaki fark nedir?<\/p>","protected":false},"author":8,"featured_media":2750,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[62],"tags":[301,314,307,286],"acf":[],"_links":{"self":[{"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/posts\/2743"}],"collection":[{"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/comments?post=2743"}],"version-history":[{"count":0,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/posts\/2743\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/media\/2750"}],"wp:attachment":[{"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/media?parent=2743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/categories?post=2743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siproin-ic.com\/tr\/wp-json\/wp\/v2\/tags?post=2743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}