Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plushttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plusProduct Detail Documentsen-USTelligent Community 12Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plushttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plusFri, 05 May 2023 15:57:26 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:49a061d1-08e2-42f8-9914-82b246bcbd11e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus#commentsCurrent Revision posted to Documents by e14-publisher on 5/5/2023 3:57:26 PM<br /> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA140V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-cee82" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cee82'));" data-farnell="2475469" data-newark="" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA140V1 is a 15 W wide range evaluation board based on the Viper37HE. It is designed as an example of an isolated auxiliary power supply. The board and the transformer were designed and optimized in order to have a very compact size evaluation board.</p> <p>The&nbsp;VIPER37 device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.</p> <p><strong>Applications:</strong></p> <ul> <li>SMPS for set-top boxes, DVD players and recorders, white goods</li> <li>Auxiliary power supply for consumer and home equipment</li> <li>ATX auxiliary power supply</li> <li>Low / medium power AC-DC adapters</li> </ul> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>AC Main Input voltage range: 100 V<sub>AC</sub>to 265 V<sub>AC</sub></li> <li>Mains frequency (f<sub>L</sub>): 50 Hz / 60 Hz</li> <li>Output voltage typ: 12 V</li> <li>Output current: 1.25 A</li> <li>Output ripple voltage: 50 mV</li> <li>Rated output power: 15 W</li> <li>Input power in standby @230 V<sub>AC</sub>: 50 mW</li> <li>Active mode efficiency: 78%</li> <li>Ambient operating temperature: 60 &deg;C</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Board</li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Application Note</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00102177.pdf" target="_blank">VIPER37HE: 15 W wide range single output evaluation board (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00038256.pdf" target="_blank">VIPER37 - VIPerPlus Family: Fixed frequency off line converter (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00103705.pdf" target="_blank">15W, 12V output, isolated flyback converter using VIPer<span class="emoticon" data-url="https://community.element14.com/cfs-file/__key/system/emoji/2122.svg" title="Tm">&#x2122;</span> Plus - VIPER37HE (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa140v1_bom.pdf" target="_blank">STEVAL-ISA140V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa140v1_gerber.zip" target="_blank">STEVAL-ISA140V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa140v1_schematic.pdf" target="_blank">STEVAL-ISA140V1 schematics (pdf)</a> </div> </div> </div> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2620, "type": "devtool", "part_number": "STEVAL-ISA140V1" };</script> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: VIPER37HE, power_management, stm, isolated flyback converter, analog_demo_boards, acdc_converter_or_offline_converter</div> Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plushttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus/revision/3Thu, 16 Dec 2021 23:29:20 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:49a061d1-08e2-42f8-9914-82b246bcbd11e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus#commentsRevision 3 posted to Documents by e14-publisher on 12/16/2021 11:29:20 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2620, "type": "devtool", "part_number": "STEVAL-ISA140V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA140V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-570a0" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('570a0'));" data-farnell="2475469" data-newark="" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA140V1 is a 15 W wide range evaluation board based on the Viper37HE. It is designed as an example of an isolated auxiliary power supply. The board and the transformer were designed and optimized in order to have a very compact size evaluation board.</p> <p>The&nbsp;VIPER37 device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.</p> <p><strong>Applications:</strong></p> <ul> <li>SMPS for set-top boxes, DVD players and recorders, white goods</li> <li>Auxiliary power supply for consumer and home equipment</li> <li>ATX auxiliary power supply</li> <li>Low / medium power AC-DC adapters</li> </ul> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>AC Main Input voltage range: 100 V<sub>AC</sub>to 265 V<sub>AC</sub></li> <li>Mains frequency (f<sub>L</sub>): 50 Hz / 60 Hz</li> <li>Output voltage typ: 12 V</li> <li>Output current: 1.25 A</li> <li>Output ripple voltage: 50 mV</li> <li>Rated output power: 15 W</li> <li>Input power in standby @230 V<sub>AC</sub>: 50 mW</li> <li>Active mode efficiency: 78%</li> <li>Ambient operating temperature: 60 &deg;C</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Board</li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Application Note</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00102177.pdf" target="_blank">VIPER37HE: 15 W wide range single output evaluation board (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00038256.pdf" target="_blank">VIPER37 - VIPerPlus Family: Fixed frequency off line converter (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00103705.pdf" target="_blank">15W, 12V output, isolated flyback converter using VIPer<span class="emoticon" data-url="https://community.element14.com/cfs-file/__key/system/emoji/2122.svg" title="Tm">&#x2122;</span> Plus - VIPER37HE (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa140v1_bom.pdf" target="_blank">STEVAL-ISA140V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa140v1_gerber.zip" target="_blank">STEVAL-ISA140V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa140v1_schematic.pdf" target="_blank">STEVAL-ISA140V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: VIPER37HE, power_management, stm, isolated flyback converter, analog_demo_boards, acdc_converter_or_offline_converter</div> Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plushttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus/revision/2Thu, 16 Dec 2021 03:16:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:49a061d1-08e2-42f8-9914-82b246bcbd11e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus#commentsRevision 2 posted to Documents by e14-publisher on 12/16/2021 3:16:36 AM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2620, "type": "devtool", "part_number": "STEVAL-ISA140V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA140V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-f613a" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f613a'));" data-farnell="" data-newark="" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA140V1 is a 15 W wide range evaluation board based on the Viper37HE. It is designed as an example of an isolated auxiliary power supply. The board and the transformer were designed and optimized in order to have a very compact size evaluation board.</p> <p>The&nbsp;VIPER37 device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.</p> <p><strong>Applications:</strong></p> <ul> <li>SMPS for set-top boxes, DVD players and recorders, white goods</li> <li>Auxiliary power supply for consumer and home equipment</li> <li>ATX auxiliary power supply</li> <li>Low / medium power AC-DC adapters</li> </ul> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>AC Main Input voltage range: 100 V<sub>AC</sub>to 265 V<sub>AC</sub></li> <li>Mains frequency (f<sub>L</sub>): 50 Hz / 60 Hz</li> <li>Output voltage typ: 12 V</li> <li>Output current: 1.25 A</li> <li>Output ripple voltage: 50 mV</li> <li>Rated output power: 15 W</li> <li>Input power in standby @230 V<sub>AC</sub>: 50 mW</li> <li>Active mode efficiency: 78%</li> <li>Ambient operating temperature: 60 &deg;C</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Board</li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Application Note</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00102177.pdf" target="_blank">VIPER37HE: 15 W wide range single output evaluation board (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00038256.pdf" target="_blank">VIPER37 - VIPerPlus Family: Fixed frequency off line converter (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00103705.pdf" target="_blank">15W, 12V output, isolated flyback converter using VIPer<span class="emoticon" data-url="https://community.element14.com/cfs-file/__key/system/emoji/2122.svg" title="Tm">&#x2122;</span> Plus - VIPER37HE (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa140v1_bom.pdf" target="_blank">STEVAL-ISA140V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa140v1_gerber.zip" target="_blank">STEVAL-ISA140V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa140v1_schematic.pdf" target="_blank">STEVAL-ISA140V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: VIPER37HE, power_management, stm, isolated flyback converter, analog_demo_boards, acdc_converter_or_offline_converter</div> Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plushttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus/revision/1Mon, 18 Oct 2021 20:21:02 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:49a061d1-08e2-42f8-9914-82b246bcbd11e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21970/evaluation-board-based-on-the-viper37he---isolated-flyback-converter-using-viper-plus#commentsRevision 1 posted to Documents by e14-publisher on 10/18/2021 8:21:02 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2620, "type": "devtool", "part_number": "STEVAL-ISA140V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x206_1579630281.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_viper37he__isolated_flyback_converter_using_viper_plus_500x343_1579630281.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the Viper37HE - isolated flyback converter using VIPer Plus" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA140V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-1d916" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1d916'));" data-farnell="2475469" data-newark="" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA140V1 is a 15 W wide range evaluation board based on the Viper37HE. It is designed as an example of an isolated auxiliary power supply. The board and the transformer were designed and optimized in order to have a very compact size evaluation board.</p> <p>The&nbsp;VIPER37 device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.</p> <p><strong>Applications:</strong></p> <ul> <li>SMPS for set-top boxes, DVD players and recorders, white goods</li> <li>Auxiliary power supply for consumer and home equipment</li> <li>ATX auxiliary power supply</li> <li>Low / medium power AC-DC adapters</li> </ul> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>AC Main Input voltage range: 100 V<sub>AC</sub>to 265 V<sub>AC</sub></li> <li>Mains frequency (f<sub>L</sub>): 50 Hz / 60 Hz</li> <li>Output voltage typ: 12 V</li> <li>Output current: 1.25 A</li> <li>Output ripple voltage: 50 mV</li> <li>Rated output power: 15 W</li> <li>Input power in standby @230 V<sub>AC</sub>: 50 mW</li> <li>Active mode efficiency: 78%</li> <li>Ambient operating temperature: 60 &deg;C</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Board</li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Application Note</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00102177.pdf" target="_blank">VIPER37HE: 15 W wide range single output evaluation board (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00038256.pdf" target="_blank">VIPER37 - VIPerPlus Family: Fixed frequency off line converter (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00103705.pdf" target="_blank">15W, 12V output, isolated flyback converter using VIPer<span class="emoticon" data-url="https://community.element14.com/cfs-file/__key/system/emoji/2122.svg" title="Tm">&#x2122;</span> Plus - VIPER37HE (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa140v1_bom.pdf" target="_blank">STEVAL-ISA140V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa140v1_gerber.zip" target="_blank">STEVAL-ISA140V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa140v1_schematic.pdf" target="_blank">STEVAL-ISA140V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: VIPER37HE, power_management, stm, isolated flyback converter, analog_demo_boards, acdc_converter_or_offline_converter</div>