{"id":81452,"date":"2024-10-18T10:00:02","date_gmt":"2024-10-18T08:00:02","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/?p=81452"},"modified":"2026-04-08T10:47:46","modified_gmt":"2026-04-08T08:47:46","slug":"mc34063-co-to-jest-dane-techniczne-schemat-cena-i-opinie","status":"publish","type":"post","link":"https:\/\/botland.com.pl\/blog\/mc34063-co-to-jest-dane-techniczne-schemat-cena-i-opinie\/","title":{"rendered":"MC34063 &#8211; Co to jest? Dane techniczne, schemat"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Czas czytania:<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"81452\" class=\"elementor elementor-81452\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-afff9c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"afff9c8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c589687\" data-id=\"c589687\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8b0bb9 elementor-widget elementor-widget-text-editor\" data-id=\"e8b0bb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>W tym artykule skupimy si\u0119 na <strong>uk\u0142adzie scalonym MC34063<\/strong>, kt\u00f3ry jest zwykle u\u017cywany w uk\u0142adach elektronicznych przetwornic napi\u0119cia sta\u0142ego do zasilania mi\u0119dzy innymi w topologii Boost lub Buck oraz zaprojektujemy uk\u0142ad podwy\u017cszaj\u0105cy napi\u0119cie sta\u0142e z warto\u015bci 5V do 12V oparty na tym uk\u0142adzie scalonym.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b3ad29 elementor-widget elementor-widget-heading\" data-id=\"9b3ad29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Charakterystyka og\u00f3lna uk\u0142adu scalonego MC34063<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-41ef4a7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"41ef4a7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5186d7e\" data-id=\"5186d7e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fe87350 elementor-widget elementor-widget-image\" data-id=\"fe87350\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"01455_4_kwadrat\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTExNTksInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmNvbS5wbFwvYmxvZ1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDVcLzAxNDU1XzRfa3dhZHJhdC5qcGcifQ%3D%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat-1024x1024.jpg\" class=\"attachment-large size-large wp-image-91159\" alt=\"\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat-1024x1024.jpg 1024w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat-300x300.jpg 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat-768x768.jpg 768w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/05\/01455_4_kwadrat.jpg 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Przetwornica regulowana step-up\/step-down MC34063 - 5 szt.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a931e60 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"a931e60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.com.pl\/uklady-scalone-step-up-step-down\/1455-przetwornica-regulowana-step-upstep-down-mc34063-5-szt-5904422356019.html\" target=\"_blank\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">SPRAWD\u0179<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-af4dc7d\" data-id=\"af4dc7d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-85a4ab7 elementor-widget elementor-widget-text-editor\" data-id=\"85a4ab7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/botland.com.pl\/uklady-scalone-step-up-step-down\/1455-przetwornica-regulowana-step-upstep-down-mc34063-5-szt-5904422356019.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">Uk\u0142ad scalony MC34063<\/a> jest przetwornic\u0105 <strong>DC\/DC<\/strong> najcz\u0119\u015bciej wykorzystywan\u0105 w przekszta\u0142tnikach o <strong>topologii Buck<\/strong> do obni\u017cenia napi\u0119cia oraz w <strong>topologii Boost<\/strong> do podwy\u017cszania napi\u0119cia. Uk\u0142ad scalony MC34063 zawiera wszystkie niezb\u0119dne bloki umo\u017cliwiaj\u0105ce zbudowanie <strong>przetwornic napi\u0119cia sta\u0142ego<\/strong>, a zakres cz\u0119stotliwo\u015bci prze\u0142\u0105czanych obs\u0142ugiwanych przez ten uk\u0142ad scalony si\u0119ga 100kHz. MC34063 jest popularny w uk\u0142adach przetwornic DC\/DC z uwagi na jego <strong>mo\u017cliwo\u015bci konwertowania napi\u0119cia<\/strong> oraz nisk\u0105 cen\u0119 i prost\u0105 implementacj\u0119. Zakres temperatur roboczych tego uk\u0142adu scalonego si\u0119ga od 0*C do 70*C. MC34063 jest powszechnie u\u017cywany w uk\u0142adach regulator\u00f3w napi\u0119cia, \u0142adowarkach, a tak\u017ce w innych aplikacjach elektronicznych o niestandardowych potrzebach energetycznych. Uk\u0142ad MC34063 mo\u017cna naby\u0107 w obudowie 8-pinowej DIP do monta\u017cu THT, a tak\u017ce w obudowie SOIC do monta\u017cu SMD.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-023d298 elementor-widget elementor-widget-spacer\" data-id=\"023d298\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6fc15d9 elementor-widget elementor-widget-heading\" data-id=\"6fc15d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Funkcje uk\u0142adu scalonego MC34063<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ab54e6 elementor-widget elementor-widget-text-editor\" data-id=\"6ab54e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Uk\u0142ad scalony MC34063<\/strong> mo\u017ce pe\u0142ni\u0107 nast\u0119puj\u0105ce funkcje:<\/p><ul style=\"font-size: 16px; background-color: #ffffff;\"><li style=\"font-size: 16px;\">oscylator;<\/li><li style=\"font-size: 16px;\">elektroniczny prze\u0142\u0105cznik o wysokiej wydajno\u015bci pr\u0105dowej na wyj\u015bciu;<\/li><li style=\"font-size: 16px;\">detektor szczytowy pr\u0105du;<\/li><li style=\"font-size: 16px;\">uk\u0142ad wykrywaj\u0105cy obecno\u015b\u0107 napi\u0119cia na wyj\u015bciu komparatora;<\/li><li style=\"font-size: 16px;\">skompensowane termicznie \u017ar\u00f3d\u0142o napi\u0119cia odniesienia.<\/li><\/ul><p>Dzi\u0119ki szczeg\u00f3\u0142owemu zaprojektowaniu poszczeg\u00f3lnych blok\u00f3w uk\u0142adu MC34063 wymaga on <strong>minimalnej liczby element\u00f3w peryferyjnych<\/strong> do realizacji powy\u017cszych i wielu innych aplikacji.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11739e4 elementor-widget elementor-widget-heading\" data-id=\"11739e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">MC34063 - opis wyprowadze\u0144 uk\u0142adu<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-555b757 elementor-widget elementor-widget-text-editor\" data-id=\"555b757\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Uk\u0142ad scalony <a href=\"https:\/\/botland.com.pl\/uklady-scalone-step-up-step-down\/1455-przetwornica-regulowana-step-upstep-down-mc34063-5-szt-5904422356019.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">MC34063<\/a> jest umieszczony w obudowie produkowanej zar\u00f3wno w wersji SMD jak i THT. W obu obudowach znajdziemy osiem wyprowadze\u0144, a ich funkcje s\u0105 nast\u0119puj\u0105ce:<\/p><ol><li>kolektor tranzystora prze\u0142\u0105czaj\u0105cego<\/li><li>kolektor tranzystora prze\u0142\u0105czaj\u0105cego<\/li><li>zewn\u0119trzny kondensator obwodu czasowego przetwornicy<\/li><li>masa uk\u0142adu (GND)<\/li><li>wej\u015bcie odwracaj\u0105ce komparatora ustawiaj\u0105ce napi\u0119cie wyj\u015bciowe<\/li><li>wej\u015bcie napi\u0119cia zasilania pomocniczego (VCC)<\/li><li>wykrywanie pr\u0105du obci\u0105\u017cenia<\/li><li>kolektor tranzystora wyj\u015bciowego przetwornicy<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d76d999 elementor-widget elementor-widget-spacer\" data-id=\"d76d999\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8244942 elementor-widget elementor-widget-heading\" data-id=\"8244942\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Podstawowe topologie uk\u0142adu scalonego MC34063<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a74bad elementor-widget elementor-widget-text-editor\" data-id=\"3a74bad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Uk\u0142ad scalony MC34063 ma szeroki zakres napi\u0119\u0107 zasilania wej\u015bciowego, tj. <strong>od 3V do 40V<\/strong> i mo\u017ce dostarczy\u0107 na wyj\u015bciu pr\u0105d prze\u0142\u0105czany <strong>do 1,5A<\/strong> po dodaniu cewki o odpowiedniej indukcyjno\u015bci. Uk\u0142ad umo\u017cliwia regulacj\u0119 napi\u0119cia wyj\u015bciowego, ograniczenie pr\u0105du zwarciowego i niski pob\u00f3r pr\u0105du w stanie czuwania. Za pomoc\u0105 tego uk\u0142adu scalonego mo\u017cemy zbudowa\u0107 <a href=\"https:\/\/botland.com.pl\/1408-przetwornice-dcdc\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">przekszta\u0142tnik DC\/DC<\/a> w topologii typu buck, boost oraz <strong>uk\u0142ad odwracaj\u0105cy biegunowo\u015b\u0107 napi\u0119cia<\/strong>, wykorzystuj\u0105c kilka dodatkowych komponent\u00f3w zewn\u0119trznych. Przetwornice DC\/DC s\u0105 cz\u0119sto u\u017cywane do wydajnego dostarczania regulowanego napi\u0119cia, kt\u00f3re mo\u017ce by\u0107 odpowiednio kontrolowane przy zmiennym obci\u0105\u017ceniu. Przetwornica Buck wytwarza napi\u0119cie obni\u017cone wzgl\u0119dem napi\u0119cia wej\u015bciowego, a przetwornica Boost wytwarza napi\u0119cie podwy\u017cszone wzgl\u0119dem napi\u0119cia wej\u015bciowego.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0fd915c elementor-widget elementor-widget-heading\" data-id=\"0fd915c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Przetwornica typu Boost<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13fb398 elementor-widget elementor-widget-text-editor\" data-id=\"13fb398\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sercem obwodu jest regulator prze\u0142\u0105czaj\u0105cy IC MC34063A. <a href=\"https:\/\/botland.com.pl\/diody-schottky\/306-dioda-schottky-1n5819-1a-40v-10szt-5903351244480.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">Dioda Schottky&#8217;ego 1N5819<\/a> ma niski spadek napi\u0119cia w przewodzie i du\u017c\u0105 pr\u0119dko\u015b\u0107 prze\u0142\u0105czania. Jest cz\u0119sto wykorzystywany w zastosowaniach wysokiej cz\u0119stotliwo\u015bci, takich jak falowniki i przetwornice DC-DC. Poniewa\u017c MC34063A mo\u017ce wytrzyma\u0107 napi\u0119cie do 40 V, obw\u00f3d mo\u017ce obs\u0142ugiwa\u0107 napi\u0119cia pr\u0105du sta\u0142ego w zakresie od 3,0 V do 40,0 V. Oferuje regulowane napi\u0119cie wyj\u015bciowe, ograniczenie pr\u0105du zwarciowego i niski pr\u0105d czuwania.<\/p><p>Teraz, na tym etapie, przyst\u0105pimy do<strong> budowy naszego obwodu<\/strong> i om\u00f3wimy komponenty, kt\u00f3re w nim znajd\u0105 si\u0119, wraz z ich odpowiednimi warto\u015bciami.<\/p><p>Po przejrzeniu noty aplikacyjnej, mo\u017cemy uzyska\u0107 pe\u0142ny wz\u00f3r oblicze\u0144, potrzebny do okre\u015blenia po\u017c\u0105danych warto\u015bci, zgodnych z naszymi wymaganiami. W arkuszu danych znajdziemy formu\u0142y obliczeniowe, kt\u00f3re pomog\u0105 nam zidentyfikowa\u0107 odpowiednie warto\u015bci. Teraz <strong>przeprowadzimy obliczenia<\/strong> warto\u015bci potrzebnych do naszego projektu, bazuj\u0105c na wzorach dost\u0119pnych w arkuszu danych.<\/p><p>\u00a0<\/p><p><strong>Krok 1:<\/strong><\/p><p>Najpierw wybierzemy diod\u0119 do oblicze\u0144. Skorzystamy z popularnej diody 1N5819. Zgodnie z arkuszem danych, przy pr\u0105dzie przewodzenia 1A, napi\u0119cie przewodzenia diody wyniesie 0,49V.<\/p><p>\u00a0<\/p><p><strong>Krok 2:<\/strong><\/p><p>Obliczymy Ton\/Toff przy u\u017cyciu wzoru, gdzie:<\/p><p>Vout = 12 V,<\/p><p>Napi\u0119cie przewodzenia diody (Vf) = 0,49 V,<\/p><p>Minimalne napi\u0119cie Vin (min) = 4,5 V,<\/p><p>Napi\u0119cie nasycenia prze\u0142\u0105cznika wyj\u015bciowego (Vsat) = 0,45 V.<\/p><p>Po podstawieniu tych warto\u015bci do wzoru otrzymujemy:<\/p><p>(12 + 0,49 &#8211; 4,5) \/ (4,5 &#8211; 0,45) = 1,97<\/p><p>St\u0105d Ton\/Toff = 1,97<\/p><p>\u00a0<\/p><p><strong>Krok 3:<\/strong><\/p><p>Teraz obliczymy Ton + Toff zgodnie ze wzorem:<\/p><p>Ton + Toff = 1 \/ f<\/p><p>Gdzie cz\u0119stotliwo\u015b\u0107 prze\u0142\u0105czania wynosi 50kHz, zgodnie z not\u0105 aplikacyjn\u0105.<\/p><p>Ton + Toff = 1 \/ 50 kHz = 20us<\/p><p>\u00a0<\/p><p><strong>Krok 4:<\/strong><\/p><p>Nast\u0119pnie obliczymy Toff:<\/p><p>Toff = (Ton + Toff) \/ (Ton\/Toff + 1)<\/p><p>Zgodnie z poprzednimi obliczeniami z kroku 2 i kroku 3:<\/p><p>Toff = 20 us \/ (1,97 + 1) = 6,73 us<\/p><p>\u00a0<\/p><p><strong>Krok 5:<\/strong><\/p><p>Obliczymy Ton:<\/p><p>Ton = (Ton + Toff) &#8211; Toff<\/p><p>Ton = 20 us &#8211; 6,73 us = 13,27 us<\/p><p>\u00a0<\/p><p><strong>Krok 6:<\/strong><\/p><p>Wybierzemy warto\u015b\u0107 kondensatora Ct potrzebn\u0105 do uzyskania po\u017c\u0105danej cz\u0119stotliwo\u015bci.<\/p><p>Ct = 4,0 x 10^-5 x Ton<\/p><p>Ct = 4,0 x 10^-5 x 13,27 us = 530,8 pF<\/p><p>Na rynku dost\u0119pny jest kondensator 560 pF, kt\u00f3ry mo\u017cna u\u017cy\u0107.<\/p><p>\u00a0<\/p><p><strong>Krok 7:<\/strong><\/p><p>Obliczymy pr\u0105d szczytowy:<\/p><p>Ipk = 2 x Iout(max) x (Ton\/Toff + 1)<\/p><p>Maksymalny pr\u0105d wyj\u015bciowy wynosi 200 mA.<\/p><p>Ipk = 2 x 0,2 A x (1,97 + 1) = 1,2 A<\/p><p>\u00a0<\/p><p><strong>Krok 8:<\/strong><\/p><p>Obliczymy warto\u015b\u0107 rezystora pr\u0105du wykrywaj\u0105cego (Rsc):<\/p><p>Rsc = 0,3 \/ Ipk<\/p><p>Rsc = 0,3 \/ 1,2 A = 0,25R<\/p><p>\u00a0<\/p><p><strong>Krok 9:<\/strong><\/p><p>Obliczymy minimaln\u0105 indukcyjno\u015b\u0107 cewki(Lmin):<\/p><p>Lmin = ((Vin(min) &#8211; Vsat) \/ Ipk) x Ton(max)<\/p><p>Lmin = ((4,5 V &#8211; 0,45 V) \/ 1,2 A) x 13,27 us = 44,8 uH<\/p><p>\u00a0<\/p><p><strong>Krok 10:<\/strong><\/p><p>Obliczymy warto\u015b\u0107 kondensatora wyj\u015bciowego (Cout):<\/p><p>Cout = 9 x (0,2 A x 13,27 us) \/ 0,2 V<\/p><p>Cout = 119,43 uF<\/p><p>U\u017cyjemy kondensatora 120 uF 20 V.<\/p><p>\u00a0<\/p><p><strong>Krok 11:<\/strong><\/p><p>Obliczymy warto\u015bci rezystor\u00f3w napi\u0119cia sprz\u0119\u017cenia zwrotnego:<\/p><p>Vout = 1,25 x (1 + R2 \/ R1)<\/p><p>Ustalaj\u0105c Vout = 12 V<\/p><p>Wybierzemy R1 = 910 ohm,<\/p><p>R2 = 8,2 kiloohm (8,6 x R1)<\/p><p>Teraz mamy wszystkie wymagane warto\u015bci. Wystarczy zbudowa\u0107 obw\u00f3d ze schematu i go uruchomi\u0107!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>MC34063 &#8211; uk\u0142ad scalony przetwornicy DC\/DC &#8211; poznaj jego szerokie mo\u017cliwo\u015bci w naszym artykule!<\/p>\n","protected":false},"author":21,"featured_media":91171,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,179],"tags":[],"class_list":["post-81452","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika","category-kompendium"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MC34063 - Co to jest? 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