{"id":5010,"date":"2024-07-17T11:57:33","date_gmt":"2024-07-17T02:57:33","guid":{"rendered":"https:\/\/www.bellnix.co.jp\/en\/?p=5010"},"modified":"2024-09-09T18:45:32","modified_gmt":"2024-09-09T09:45:32","slug":"isolated-dc-dc-converters-variations-such-as-series-connection","status":"publish","type":"post","link":"https:\/\/www.bellnix.co.jp\/en\/2024\/07\/17\/isolated-dc-dc-converters-variations-such-as-series-connection\/","title":{"rendered":"Isolated DC-DC Converters &#8211; Variations Of Series Connection"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">1. Overview<\/h3>\n\n\n\n<p>As isolated DC-DC converters are isolated between the primary side and secondary inside the converter as shown below, &nbsp;output polarity reversal and series connection are possible.<\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n<style>.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col{display:flex;}.kadence-column5010_0b65a9-a6{max-width:350px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_0b65a9-a6{-webkit-flex:0 1 350px;flex:0 1 350px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col,.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > *, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_0b65a9-a6{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_0b65a9-a6{-webkit-flex:0 1 350px;flex:0 1 350px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > *, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_0b65a9-a6{max-width:350px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > *, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_0b65a9-a6 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_0b65a9-a6 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"584\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_1-1024x584.png\" alt=\"\" class=\"wp-image-5011\" style=\"width:350px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_1-1024x584.png 1024w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_1-300x171.png 300w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_1-768x438.png 768w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_1.png 1264w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.1<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2. Polarity reversal <\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">2-1. Isolated, Positive output : Ex) From +12V to +5V<\/h4>\n\n\n<style>.kadence-column5010_7a0365-22 > .kt-inside-inner-col{display:flex;}.kadence-column5010_7a0365-22{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_7a0365-22{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col,.kadence-column5010_7a0365-22 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_7a0365-22 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col > *, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_7a0365-22{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_7a0365-22{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_7a0365-22 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_7a0365-22 > .kt-inside-inner-col > *, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_7a0365-22{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col > *, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7a0365-22 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7a0365-22 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_7a0365-22 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img decoding=\"async\" width=\"477\" height=\"151\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_2.png\" alt=\"\" class=\"wp-image-5004\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_2.png 477w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_2-300x95.png 300w\" sizes=\"(max-width: 477px) 100vw, 477px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.2<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">2-2. Isolated, Negative output : Ex) From +12V to -5V<\/h4>\n\n\n<style>.kadence-column5010_941c46-46 > .kt-inside-inner-col{display:flex;}.kadence-column5010_941c46-46{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_941c46-46{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_941c46-46 > .kt-inside-inner-col,.kadence-column5010_941c46-46 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_941c46-46 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_941c46-46 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_941c46-46 > .kt-inside-inner-col > *, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_941c46-46 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_941c46-46 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_941c46-46{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_941c46-46{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_941c46-46 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_941c46-46 > .kt-inside-inner-col > *, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_941c46-46 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_941c46-46{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_941c46-46 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_941c46-46 > .kt-inside-inner-col > *, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_941c46-46 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_941c46-46 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_941c46-46 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img decoding=\"async\" width=\"476\" height=\"150\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_3.png\" alt=\"\" class=\"wp-image-5005\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_3.png 476w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_3-300x95.png 300w\" sizes=\"(max-width: 476px) 100vw, 476px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.3<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-align-center\">\u203bS.GND &#8230; Secondary side ground<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2-3. Non-isolated, Positive output : Ex) From +12V to +5V<\/strong><\/h4>\n\n\n<style>.kadence-column5010_7f4254-b0 > .kt-inside-inner-col{display:flex;}.kadence-column5010_7f4254-b0{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_7f4254-b0{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col,.kadence-column5010_7f4254-b0 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > *, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_7f4254-b0{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_7f4254-b0{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_7f4254-b0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > *, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_7f4254-b0{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > *, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_7f4254-b0 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_7f4254-b0 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_7f4254-b0 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"476\" height=\"161\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_4.png\" alt=\"\" class=\"wp-image-5006\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_4.png 476w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_4-300x101.png 300w\" sizes=\"(max-width: 476px) 100vw, 476px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.4<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><strong>2-4. Non-isolated, Negative output : Ex) From +12V to -5V<\/strong><\/strong><\/h4>\n\n\n<style>.kadence-column5010_20583c-66 > .kt-inside-inner-col{display:flex;}.kadence-column5010_20583c-66{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_20583c-66{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_20583c-66 > .kt-inside-inner-col,.kadence-column5010_20583c-66 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_20583c-66 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_20583c-66 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_20583c-66 > .kt-inside-inner-col > *, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_20583c-66 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_20583c-66 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_20583c-66{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_20583c-66{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_20583c-66 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_20583c-66 > .kt-inside-inner-col > *, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_20583c-66 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_20583c-66{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_20583c-66 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_20583c-66 > .kt-inside-inner-col > *, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_20583c-66 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_20583c-66 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_20583c-66 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"476\" height=\"160\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_5.png\" alt=\"\" class=\"wp-image-5007\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_5.png 476w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_5-300x101.png 300w\" sizes=\"(max-width: 476px) 100vw, 476px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.5<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3.<strong> Series connection<\/strong><\/h3>\n\n\n\n<p>As the series connection is related to the isolation voltage of the converter, please contact us when connecting 3 units or more just in case.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><strong><strong>3-1. From 2 single outputs to +\/- dual outputs : Ex) From +5V to +\/-12V (From two +12V output converters to +\/-12V outputs)<\/strong><\/strong><\/strong><\/h4>\n\n\n<style>.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col{display:flex;}.kadence-column5010_9f57f0-a4{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_9f57f0-a4{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col,.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > *, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_9f57f0-a4{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_9f57f0-a4{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > *, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_9f57f0-a4{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > *, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_9f57f0-a4 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_9f57f0-a4 kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"621\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6-1024x621.png\" alt=\"\" class=\"wp-image-5008\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6-1024x621.png 1024w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6-300x182.png 300w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6-768x466.png 768w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6-1536x931.png 1536w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_6.png 1910w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.6<\/p>\n<\/div><\/div>\n\n\n\n<p>No diodes are required between + Vout and Common and between Common and -Vout.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><strong><strong><strong>3-2. From two single outputs to double voltage outputs : Ex) From +5V to +24V (From two +12V output converters to +24V output)<\/strong><\/strong><\/strong><\/strong><\/h4>\n\n\n<style>.kadence-column5010_1f0145-3c > .kt-inside-inner-col{display:flex;}.kadence-column5010_1f0145-3c{max-width:500px;margin-left:auto;margin-right:auto;}.wp-block-kadence-column.kb-section-dir-horizontal:not(.kb-section-md-dir-vertical)>.kt-inside-inner-col>.kadence-column5010_1f0145-3c{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col,.kadence-column5010_1f0145-3c > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5010_1f0145-3c > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col > *, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5010_1f0145-3c{position:relative;}@media all and (min-width: 1025px){.wp-block-kadence-column.kb-section-dir-horizontal>.kt-inside-inner-col>.kadence-column5010_1f0145-3c{-webkit-flex:0 1 500px;flex:0 1 500px;max-width:unset;margin-left:unset;margin-right:unset;}}@media all and (max-width: 1024px){.kadence-column5010_1f0145-3c > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column5010_1f0145-3c > .kt-inside-inner-col > *, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.wp-block-kadence-column.kb-section-sm-dir-vertical:not(.kb-section-sm-dir-horizontal):not(.kb-section-sm-dir-specificity)>.kt-inside-inner-col>.kadence-column5010_1f0145-3c{max-width:500px;-webkit-flex:1;flex:1;margin-left:auto;margin-right:auto;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:center;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col > *, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-image, .kadence-column5010_1f0145-3c > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column5010_1f0145-3c > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5010_1f0145-3c kb-section-dir-horizontal\"><div class=\"kt-inside-inner-col\"><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"555\" height=\"323\" src=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_7.png\" alt=\"\" class=\"wp-image-5009\" style=\"width:500px\" srcset=\"https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_7.png 555w, https:\/\/www.bellnix.co.jp\/en\/websystem\/wp-content\/uploads\/2024\/07\/apprication004_7-300x175.png 300w\" sizes=\"(max-width: 555px) 100vw, 555px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-right\">Fig.7<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Two converters can be used in this way even if those are not the same on output power and\/or output voltage. In that case, the smaller value of those two converters is applied on the maximum load current.<\/p>\n\n\n\n<p>Insert a diode (D1, D2) between each output to prevent startup failure.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Conditions for <strong><strong><strong><strong><strong>Diode (D1, D2) selection <\/strong><\/strong><\/strong><\/strong><\/strong><\/h4>\n\n\n\n<p>Forward voltage: Selecting the minimum Vf diode is ideal, therefore, a Schottky barrier diode is recommended.<\/p>\n\n\n\n<p>Reverse voltage: Should at least be as twice as the voltage difference between + Vout and &#8211; Vout of each converter.<\/p>\n\n\n\n<p>Forward current: Should be the maximum output current of each converter or larger. (Derating and other factors should be taken into consideration.)<\/p>\n\n\n\n<p>Reverse current: As a voltage is applied to the diode all the time when the converter is working, it is recommended to select the one that leakage current is the minimum.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Overview As isolated DC-DC converters are isolated between the primary side and secondary inside the conver [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kadence_starter_templates_imported_post":false,"footnotes":""},"categories":[54],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Isolated DC-DC Converters - Variations Of Series Connection - bellnix<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bellnix.co.jp\/en\/2024\/07\/17\/isolated-dc-dc-converters-variations-such-as-series-connection\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Isolated DC-DC Converters - Variations Of Series Connection - bellnix\" \/>\n<meta property=\"og:description\" content=\"1. 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