{"id":4789,"date":"2025-05-14T03:20:54","date_gmt":"2025-05-14T03:20:54","guid":{"rendered":"https:\/\/www.omch.com\/?p=4789"},"modified":"2025-06-04T07:32:24","modified_gmt":"2025-06-04T07:32:24","slug":"what-is-a-switching-power-supply","status":"publish","type":"post","link":"https:\/\/www.omch.com\/tr\/what-is-a-switching-power-supply\/","title":{"rendered":"SMPS A\u00e7\u0131kland\u0131: Anahtarlamal\u0131 G\u00fc\u00e7 Kayna\u011f\u0131 Ger\u00e7ekte Nedir?"},"content":{"rendered":"

Elektronik cihazlara g\u00fc\u00e7 sa\u011flaman\u0131n verimli bir \u015fekilde yap\u0131lmas\u0131n\u0131 sa\u011flamak, kompakt yap\u0131s\u0131 nedeniyle bug\u00fcn i\u00e7inde ya\u015fad\u0131\u011f\u0131m\u0131z d\u00fcnya i\u00e7in en \u00f6nemli \u00f6nceliktir. Etraf\u0131n\u0131za bir g\u00f6z at\u0131n: cep telefonu \u015farj cihazlar\u0131, diz\u00fcst\u00fc bilgisayar adapt\u00f6rleri, hatta televizyon ve bilgisayarlardaki dahili DC g\u00fc\u00e7 kaynaklar\u0131 bile ge\u00e7mi\u015fin hantal transformat\u00f6rlerinden daha \u015f\u0131k, daha h\u0131zl\u0131 ve daha verimli. Bu de\u011fi\u015fimi getiren nedir? Anahtarlama Modlu G\u00fc\u00e7 Kayna\u011f\u0131 \u00fcniteleri (SMPS). Siz fark\u0131na varmadan, bu teknoloji modern elektronik cihazlardaki \u201cangarya\u201d i\u015flerin \u00e7o\u011funu ger\u00e7ekle\u015ftirmekte, kompaktl\u0131k ve hafifli\u011fin yan\u0131 s\u0131ra do\u011frusal kaynaklara k\u0131yasla geli\u015fmi\u015f verimlilik sa\u011flamaktad\u0131r. Ancak smps (anahtarlamal\u0131 g\u00fc\u00e7 kayna\u011f\u0131) tam olarak nedir? Ve bunu nas\u0131l ba\u015far\u0131r? Bu makalede, SMPS teknolojisinin kavramlar\u0131n\u0131, i\u015flemlerini, bile\u015fenlerini ve uygulamalar\u0131n\u0131 a\u00e7\u0131klarken, elektronikte g\u00fc\u00e7 kayna\u011f\u0131 d\u00f6n\u00fc\u015f\u00fcm\u00fc i\u00e7in neden lider teknik haline geldi\u011fini ke\u015ffedece\u011fiz.<\/p>\n\n\n\n

Temel Kavram\u0131 Anlamak<\/h2>\n\n\n\n

Anahtarlamal\u0131 bir g\u00fc\u00e7 kayna\u011f\u0131, dc elektrik giri\u015f g\u00fcc\u00fcn\u00fc s\u00fcrekli da\u011f\u0131tma yoluyla de\u011fil, h\u0131zl\u0131 anahtarlama yoluyla do\u011fru ak\u0131m olarak y\u00f6netir. Su ak\u0131\u015f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcn - do\u011frusal bir g\u00fc\u00e7 kayna\u011f\u0131, tamamen a\u00e7\u0131k olan ve suyun kontrols\u00fcz bir \u015fekilde d\u00f6k\u00fclmesine izin veren bir su muslu\u011fu gibidir. Su bas\u0131nc\u0131 daha sonra s\u00fcrt\u00fcnme ve diren\u00e7 yaratan, \u0131s\u0131 olarak s\u00fcrekli enerji harcayan vanalar kullan\u0131larak kontrol edilebilir. Su alternatif olarak muslu\u011fun a\u00e7\u0131l\u0131p kapat\u0131lmas\u0131yla da d\u00fczenlenebilir, anahtarlamal\u0131 bir g\u00fc\u00e7 kayna\u011f\u0131 bu \u015fekilde \u00e7al\u0131\u015f\u0131r. Muslu\u011fun a\u00e7\u0131k ve kapal\u0131 oldu\u011fu s\u00fcre ortalama su ak\u0131\u015f\u0131n\u0131 belirler - \u00e7evirme eyleminin kendisinde bo\u015fa harcanan enerji minimumdur. SMPS'den farkl\u0131 bir anahtarlamal\u0131 g\u00fc\u00e7 kayna\u011f\u0131, do\u011frusal g\u00fc\u00e7 kaynaklar\u0131na g\u00f6re daha y\u00fcksek enerji verimlili\u011fi sa\u011flar. Temel i\u015flevi, ham bir ac kayna\u011f\u0131ndan veya bir DC kayna\u011f\u0131ndan \u00e7ekilen elektrik g\u00fcc\u00fcn\u00fc, gerekli y\u00fck ile sabit bir \u00e7\u0131k\u0131\u015f voltaj\u0131na veya ak\u0131m\u0131na d\u00f6n\u00fc\u015ft\u00fcrmek ve bunu g\u00fc\u00e7 kayb\u0131 olmadan zahmetsizce yapmakt\u0131r. Geli\u015ftirilmi\u015f d\u00f6n\u00fc\u015f\u00fcmler \u0131s\u0131 olu\u015fumunu en aza indirir ve \u00e7\u0131k\u0131\u015f g\u00fcc\u00fc \u00fczerinde daha y\u00fcksek reg\u00fclasyon kontrol\u00fc sa\u011flar.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

SMPS ve Do\u011frusal G\u00fc\u00e7 Kaynaklar\u0131: Kar\u015f\u0131la\u015ft\u0131rma<\/h2>\n\n\n\n

Anahtarlamal\u0131 g\u00fc\u00e7 kayna\u011f\u0131n\u0131n de\u011ferini tam olarak kavramak i\u00e7in ana alternatifini ve selefi olan do\u011frusal g\u00fc\u00e7 kayna\u011f\u0131n\u0131 bilmekte fayda vard\u0131r. Do\u011frusal g\u00fc\u00e7 kayna\u011f\u0131n\u0131n temiz \u00e7\u0131k\u0131\u015f voltaj\u0131ndaki basitli\u011fi, g\u00fc\u00e7 kayna\u011f\u0131 tasar\u0131m\u0131n\u0131 kolayla\u015ft\u0131r\u0131r. Bununla birlikte, \u00e7al\u0131\u015fma prensibi \u00e7ok say\u0131da modern uygulamada ciddi s\u0131n\u0131rlamalara neden olmaktad\u0131r. Temel \u00f6zelliklere dayal\u0131 bir kar\u015f\u0131la\u015ft\u0131rma yap\u0131lacakt\u0131r.<\/p>\n\n\n\n

Verimlilik ve G\u00fc\u00e7 Da\u011f\u0131t\u0131m\u0131<\/h3>\n\n\n\n

Do\u011frusal g\u00fc\u00e7 kaynaklar\u0131 voltaj reg\u00fclasyonunu, transist\u00f6r gibi bir seri ge\u00e7i\u015f bile\u015feni boyunca fazla voltaj\u0131 d\u00fc\u015f\u00fcrerek ger\u00e7ekle\u015ftirir. Bu enerji \u0131s\u0131ya d\u00f6n\u00fc\u015ferek g\u00fc\u00e7 kayb\u0131na ve \u0131s\u0131 olu\u015fumuna neden olur, bu nedenle verimlilik d\u00fc\u015f\u00fckt\u00fcr. Dahas\u0131, giri\u015f ve \u00e7\u0131k\u0131\u015f voltaj\u0131 aras\u0131nda b\u00fcy\u00fck bir bo\u015fluk oldu\u011funda veya y\u00fcksek ak\u0131m \u00e7ekildi\u011finde bu durum daha da k\u00f6t\u00fcle\u015fir. Ayr\u0131ca, do\u011frusal bir reg\u00fclat\u00f6r yaln\u0131zca 40-60% verimlilik sa\u011flayabilir ki bu olduk\u00e7a d\u00fc\u015f\u00fckt\u00fcr. <\/p>\n\n\n\n

\u00d6te yandan anahtarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131 neredeyse sadece tamamen A\u00c7IK veya KAPALI olduklar\u0131nda \u00e7al\u0131\u015fan bile\u015fenler kullan\u0131r. Bu, g\u00fc\u00e7 kayb\u0131n\u0131 en aza indirir, dolay\u0131s\u0131yla pratik tasar\u0131mlarda s\u0131kl\u0131kla 85-95%'yi a\u015fan verimlili\u011fi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde art\u0131r\u0131r. Bu, bo\u015fa harcanan enerjiyi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azalt\u0131r ve daha d\u00fc\u015f\u00fck s\u0131cakl\u0131\u011fa katk\u0131da bulunan daha k\u00fc\u00e7\u00fck so\u011futucular\u0131n etkinli\u011fini daha da art\u0131r\u0131r.<\/p>\n\n\n\n

Boyut, A\u011f\u0131rl\u0131k ve Maliyet<\/h3>\n\n\n\n

SMPS i\u00e7in \u0131s\u0131 \u00fcretimi, e\u015fde\u011fer \u00e7\u0131k\u0131\u015f g\u00fcc\u00fcne sahip do\u011frusal g\u00fc\u00e7 kaynaklar\u0131ndan daha d\u00fc\u015f\u00fckt\u00fcr. Ayr\u0131ca daha k\u00fc\u00e7\u00fck so\u011futuculara ihtiya\u00e7 duyarlar. Daha da \u00f6nemlisi, SMPS g\u00fc\u00e7 hatt\u0131ndan (50\/60 Hz) daha y\u00fcksek frekanslarda \u00e7al\u0131\u015f\u0131r. Bazen SMPS y\u00fczlerce kilohertz ve hatta megahertzde \u00e7al\u0131\u015f\u0131r. SMPS daha k\u00fc\u00e7\u00fck transformat\u00f6rler ve filtre bile\u015fenleri (kapasit\u00f6rlerin ind\u00fckt\u00f6rlere ihtiyac\u0131 vard\u0131r) kullanabilir \u00e7\u00fcnk\u00fc transformat\u00f6r\u00fcn ve di\u011fer manyetik par\u00e7alar\u0131n boyutu \u00e7al\u0131\u015fma frekans\u0131 ile ters orant\u0131l\u0131d\u0131r. Bu, g\u00fc\u00e7 kaynaklar\u0131n\u0131n boyut ve a\u011f\u0131rl\u0131\u011f\u0131n\u0131n b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azalmas\u0131na katk\u0131da bulunarak \u00e7a\u011fda\u015f elektronik g\u00fc\u00e7 kayna\u011f\u0131 \u00fcnitelerinde g\u00f6r\u00fclen k\u00fc\u00e7\u00fck boyutlarla sonu\u00e7lan\u0131r. Bir SMPS'deki bile\u015fen say\u0131s\u0131 genellikle daha y\u00fcksek olsa da, y\u00fcksek hacimli \u00fcretimde b\u00fcy\u00fck seri \u00fcretilen bile\u015fenlerin maliyeti, daha basit b\u00fcy\u00fck transformat\u00f6rler ve so\u011futucular gerektirir ve SMPS, y\u00fcksek \u00e7\u0131k\u0131\u015f g\u00fcc\u00fc seviyelerine inerken do\u011frusal g\u00fc\u00e7 kaynaklar\u0131 haline gelir. A\u011f\u0131r demir \u00e7ekirdek kullan\u0131m\u0131 genellikle bir lineer besleme 50\/60Hz transformat\u00f6r\u00fcnde gereklidir ve a\u011f\u0131rl\u0131\u011fa katk\u0131da bulunur.<\/p>\n\n\n\n

G\u00fcr\u00fclt\u00fc, Dalgalanma ve Karma\u015f\u0131kl\u0131k<\/h3>\n\n\n\n

G\u00fc\u00e7 kaynaklar\u0131n\u0131n verimlili\u011fi s\u00f6z konusu oldu\u011funda, s\u00fcrekli \u00e7al\u0131\u015fmalar\u0131 \u00e7ok d\u00fc\u015f\u00fck g\u00fcr\u00fclt\u00fcl\u00fc \u00e7\u0131k\u0131\u015f dalgalanma gerilimi ve do\u011frusal muadillerine g\u00f6re minimum EMI \u00fcretir. Bu kategorideki anahtarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131n\u0131n do\u011fas\u0131 gere\u011fi voltaj ve ak\u0131m darbeleri olu\u015fur ve bu da daha y\u00fcksek \u00e7\u0131k\u0131\u015f dalgalanma voltaj\u0131na ve \u00f6nemli EMI'ye neden olur. Bu sorunlar\u0131 \u00e7\u00f6zmek i\u00e7in tasar\u0131mc\u0131n\u0131n g\u00fc\u00e7 kayna\u011f\u0131n\u0131n karma\u015f\u0131kl\u0131\u011f\u0131n\u0131 daha da art\u0131ran daha karma\u015f\u0131k yumu\u015fatma devreleri eklemesi gerekir. Anahtarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131nda, g\u00fc\u00e7 kayna\u011f\u0131n\u0131n yumu\u015fat\u0131lmas\u0131yla ortaya \u00e7\u0131kan karma\u015f\u0131kl\u0131\u011f\u0131 art\u0131ran karma\u015f\u0131k filtreleme ve ekranlama ihtiyac\u0131 da vard\u0131r. Basit devrelere dayanan temel do\u011frusal g\u00fc\u00e7 kaynaklar\u0131n\u0131n aksine, daha geli\u015fmi\u015f kontrol SMPS'leri genellikle \u00f6zel IC'lerden olu\u015fan karma\u015f\u0131k devreler gerektirir.<\/p>\n\n\n\n

\u00d6zellik<\/strong><\/td>Anahtarlamal\u0131 G\u00fc\u00e7 Kayna\u011f\u0131 (SMPS)<\/strong><\/td>Do\u011frusal G\u00fc\u00e7 Kayna\u011f\u0131<\/strong><\/td><\/tr>
Verimlilik<\/strong><\/td>Y\u00fcksek (85-95%+)<\/td>D\u00fc\u015f\u00fck (Genellikle 40-60%)<\/td><\/tr>
Boyut ve A\u011f\u0131rl\u0131k<\/strong><\/td>K\u00fc\u00e7\u00fck ve hafif<\/td>B\u00fcy\u00fck ve a\u011f\u0131r<\/td><\/tr>
Is\u0131<\/strong><\/td>Daha az \u0131s\u0131 \u00fcretimi<\/td>Daha fazla \u0131s\u0131 \u00fcretimi<\/td><\/tr>
Maliyet<\/strong><\/td>Y\u00fcksek g\u00fc\u00e7\/hacim i\u00e7in daha d\u00fc\u015f\u00fck<\/td>D\u00fc\u015f\u00fck g\u00fc\u00e7\/basitlik i\u00e7in daha d\u00fc\u015f\u00fck<\/td><\/tr>
Karma\u015f\u0131kl\u0131k<\/strong><\/td>Daha karma\u015f\u0131k tasar\u0131m ve bile\u015fenler, karma\u015f\u0131k yumu\u015fatma devresi<\/td>Basit devre ve bile\u015fenler<\/td><\/tr>
G\u00fcr\u00fclt\u00fc (EMI)<\/strong><\/td>Daha y\u00fcksek, filtreleme\/kalkanlama gerektirir<\/td>\u00c7ok d\u00fc\u015f\u00fck g\u00fcr\u00fclt\u00fc<\/td><\/tr>
\u00c7\u0131k\u0131\u015f Dalgalanmas\u0131<\/strong><\/td>Daha y\u00fcksek, sa\u011flam filtreleme gerektirir<\/td>\u00c7ok D\u00fc\u015f\u00fck<\/td><\/tr>
Ge\u00e7ici Solunum.<\/strong><\/td>G\u00fc\u00e7 kayna\u011f\u0131 tasar\u0131m\u0131na ba\u011fl\u0131 olarak daha yava\u015f olabilir<\/td>Genel olarak daha h\u0131zl\u0131<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Anahtarlamal\u0131 G\u00fc\u00e7 Kaynaklar\u0131 Nas\u0131l \u00c7al\u0131\u015f\u0131r? Basitle\u015ftirilmi\u015f Bir K\u0131lavuz<\/strong><\/h2>\n\n\n\n

Anahtarlamal\u0131 G\u00fc\u00e7 Kaynaklar\u0131 (SMPS), sistemleri do\u011frusal d\u00f6n\u00fc\u015ft\u00fcr\u00fcc\u00fclerden daha fazla d\u00fczene sokmalar\u0131na ra\u011fmen, g\u00fc\u00e7 d\u00f6n\u00fc\u015f\u00fcm\u00fc ve reg\u00fclasyon bile\u015fenleri i\u00e7in farkl\u0131 \u00f6zelliklere sahiptir. Temel s\u00fcre\u00e7leri ad\u0131mlar olarak g\u00f6rmek i\u00e7in a\u015fa\u011f\u0131daki tasla\u011f\u0131 g\u00f6z \u00f6n\u00fcnde bulundurun:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ad\u0131m 1: Giri\u015f ve D\u00fczeltme<\/strong><\/p>\n\n\n\n

AC giri\u015fler belirli bir voltaj seviyesi ile karakterize edilir. Bu gerilim \u00f6nce diyotlar vas\u0131tas\u0131yla AC'den DC'ye d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr ya da ba\u015fka bir deyi\u015fle rektifiye edilir. \u00c7\u0131k\u0131\u015f, AC giri\u015fi de\u011fi\u015fti\u011fi s\u00fcrece karars\u0131z ve dalgalanmalara duyarl\u0131 kalmas\u0131na ra\u011fmen, bir filtre kapasit\u00f6r\u00fcn\u00fcn sakinle\u015ftirdi\u011fi titre\u015fimli DC \u015feklindedir. Bir dizi modern tasar\u0131mda, AC sa\u011fland\u0131\u011f\u0131nda do\u011frultma ger\u00e7ekle\u015fir ve transformat\u00f6re gerek yoktur.<\/p>\n\n\n\n

Ad\u0131m 2: PWM ile anahtarlama<\/strong><\/p>\n\n\n\n

SMPS, Darbe Geni\u015flik Mod\u00fclasyonu (PWM) sistemlerinin en temel bile\u015feni olarak y\u00fcksek h\u0131zl\u0131 bir anahtar kullan\u0131r. G\u00f6rev d\u00f6ng\u00fcs\u00fc, y\u00fcksek h\u0131zl\u0131 anahtar i\u00e7in A\u00e7\u0131k zaman\u0131n toplam zamana oran\u0131n\u0131 belirler. SMPS'nin voltaj darbeleri \u00e7\u0131karabilmesi i\u00e7in anahtara DC giri\u015fi uygulan\u0131r. Anahtar Modlu G\u00fc\u00e7 Kayna\u011f\u0131 (SMPS), MOSFET transist\u00f6rleri ile y\u00fcksek frekans uygulayan belirli DC g\u00fc\u00e7 kayna\u011f\u0131 t\u00fcr\u00fcn\u00fc ay\u0131rt etmek i\u00e7in bu \u015fekilde adland\u0131r\u0131l\u0131r. SMPS uygulamas\u0131n\u0131n temel \u00f6zelli\u011fi, darbe geni\u015flik mod\u00fclasyonu kontrol\u00fcn\u00fcn uygulanmas\u0131d\u0131r.<\/p>\n\n\n\n

Ad\u0131m 3: Enerji Transferi ve Depolama<\/strong><\/p>\n\n\n\n

D\u00fc\u015f\u00fck voltajl\u0131 enerji darbeleri bir enerji depolama cihaz\u0131na (\u00e7o\u011fu durumda bir ind\u00fckt\u00f6r veya transformat\u00f6r) iletilir. Anahtar kapat\u0131ld\u0131\u011f\u0131nda, manyetik alanda belirli bir miktar enerji yakalan\u0131r. Bu enerji daha sonra anahtar a\u00e7\u0131ld\u0131\u011f\u0131nda serbest b\u0131rak\u0131l\u0131r. Transformat\u00f6rler ayr\u0131ca giri\u015f ve \u00e7\u0131k\u0131\u015f aras\u0131ndaki elektrik izolasyonunu korurken voltaj seviyesini art\u0131rmaya veya azaltmaya yard\u0131mc\u0131 olur.<\/p>\n\n\n\n

Ad\u0131m 4: \u00c7\u0131k\u0131\u015f Do\u011frultma ve Filtreleme<\/strong><\/p>\n\n\n\n

Enerji depolama cihaz\u0131n\u0131n \u00e7\u0131k\u0131\u015f\u0131n\u0131n d\u00fczg\u00fcn, istikrarl\u0131 bir do\u011fru ak\u0131m (DC) gerilimine d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesi i\u00e7in hala i\u015flemden ge\u00e7irilmesi gerekir. Darbeler y\u00fcksek h\u0131zl\u0131 anahtarlama diyotlar\u0131 (Schottky diyotlar\u0131) arac\u0131l\u0131\u011f\u0131yla d\u00fczeltilirken, kapasit\u00f6rler kalan sal\u0131n\u0131mlar\u0131 ortadan kald\u0131r\u0131r. \u00c7\u0131k\u0131\u015f art\u0131k sabit, kullan\u0131labilir bir DC voltaj\u0131d\u0131r.<\/p>\n\n\n\n

Ad\u0131m 5: Geri Besleme Kontrol D\u00f6ng\u00fcs\u00fc<\/strong><\/p>\n\n\n\n

\u00c7\u0131k\u0131\u015f voltaj\u0131 s\u00fcrekli olarak izlenir ve \u00f6nceden belirlenmi\u015f bir voltajla kar\u015f\u0131la\u015ft\u0131r\u0131l\u0131r. Bir fark olmas\u0131 durumunda, PWM kontrol\u00fc \u00e7\u0131k\u0131\u015f\u0131 korumak i\u00e7in anahtar\u0131n a\u00e7\u0131k kalma s\u00fcresini de\u011fi\u015ftirir. Bu, bir odan\u0131n s\u0131cakl\u0131\u011f\u0131n\u0131 kontrol eden bir termostat gibi yap\u0131l\u0131r-\u00e7\u0131k\u0131\u015f voltaj\u0131, s\u00fcrekli \u00e7aba sarf etmeden giri\u015f veya y\u00fckteki \u00e7e\u015fitli de\u011fi\u015fiklikleri izler.<\/p>\n\n\n\n

SMPS \u0130\u00e7indeki Temel Bile\u015fenler<\/h2>\n\n\n\n

Ana bile\u015fenlerin rol\u00fcn\u00fcn anla\u015f\u0131lmas\u0131, gizemin \u00e7\u00f6z\u00fclmesine yard\u0131mc\u0131 olur elektroni\u0307k g\u00fc\u00e7 kayna\u011fi<\/strong>:<\/p>\n\n\n\n