4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHRhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phrProduct Detail Documentsen-USTelligent Community 124A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHRhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phrFri, 05 May 2023 15:54:41 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:31b19b4d-25fd-41fe-9de8-688bab17df72e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr#commentsCurrent Revision posted to Documents by e14-publisher on 5/5/2023 3:54:41 PM<br /> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR</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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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-ISA107V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-9f765" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2308944&nsku=74Y7686&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" 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('9f765'));" data-farnell="2308944" data-newark="74Y7686" 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-ISA107V1 is a product evaluation board to aid in testing and designing with the ST1S41 in an SO-8 ePad package. The application is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.</p> <p>The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to V<sub>IN</sub> (100% duty-cycle). The ST1S41 integrates a 95 m&Omega; high side switch and a 69 m&Omega; low side synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers very compact solution with a minimum component count.</p> <p><strong>Applications:</strong></p> <ul> <li>uP/ASIC/DSP/FPGA core and I/O supplies</li> <li>Point of load for: STB, TVs, DVD</li> <li>Optical storage, hard disk drive, printers, audio/graphic cards</li> </ul> <p></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>4.0 V to 18 V input voltage</li> <li>Output voltage adjustable from 0.8 V</li> <li>850 kHz switching frequency</li> <li>Internal soft-start</li> <li>Integrated 95 m&Omega; and 69 m&Omega; Power MOSFETs</li> <li>All ceramic capacitor</li> <li>Enable</li> <li>Cycle by cycle current limiting</li> <li>Current fold back short circuit protection</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Demonstration 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">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/DM00064431.pdf" target="_blank">ST1S41 4 A step-down switching regulator (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">User Manual/Guide</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/DM00095594.pdf" target="_blank">DB2051: 4 A, 850 kHz fixed-frequency PWM synchronous step-down converter based on ST1S41PHR (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-isa107v1_bom.pdf" target="_blank">STEVAL-ISA107V1 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-isa107v1_gerber.zip" target="_blank">STEVAL-ISA107V1 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-isa107v1_schematic.pdf" target="_blank">STEVAL-ISA107V1 Schematics (pdf)</a> </div> </div> </div> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 1911, "type": "devtool", "part_number": "STEVAL-ISA107V1" };</script> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, ST1S41IPHR, pwm, stm, stepdown_buck_regulator, step-down, analog_demo_boards</div> 4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHRhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr/revision/3Thu, 16 Dec 2021 23:27:19 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:31b19b4d-25fd-41fe-9de8-688bab17df72e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr#commentsRevision 3 posted to Documents by e14-publisher on 12/16/2021 11:27:19 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 1911, "type": "devtool", "part_number": "STEVAL-ISA107V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR</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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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-ISA107V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-3d228" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2308944&nsku=74Y7686&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" 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('3d228'));" data-farnell="2308944" data-newark="74Y7686" 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-ISA107V1 is a product evaluation board to aid in testing and designing with the ST1S41 in an SO-8 ePad package. The application is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.</p> <p>The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to V<sub>IN</sub> (100% duty-cycle). The ST1S41 integrates a 95 m&Omega; high side switch and a 69 m&Omega; low side synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers very compact solution with a minimum component count.</p> <p><strong>Applications:</strong></p> <ul> <li>uP/ASIC/DSP/FPGA core and I/O supplies</li> <li>Point of load for: STB, TVs, DVD</li> <li>Optical storage, hard disk drive, printers, audio/graphic cards</li> </ul> <p></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>4.0 V to 18 V input voltage</li> <li>Output voltage adjustable from 0.8 V</li> <li>850 kHz switching frequency</li> <li>Internal soft-start</li> <li>Integrated 95 m&Omega; and 69 m&Omega; Power MOSFETs</li> <li>All ceramic capacitor</li> <li>Enable</li> <li>Cycle by cycle current limiting</li> <li>Current fold back short circuit protection</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Demonstration 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">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/DM00064431.pdf" target="_blank">ST1S41 4 A step-down switching regulator (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">User Manual/Guide</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/DM00095594.pdf" target="_blank">DB2051: 4 A, 850 kHz fixed-frequency PWM synchronous step-down converter based on ST1S41PHR (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-isa107v1_bom.pdf" target="_blank">STEVAL-ISA107V1 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-isa107v1_gerber.zip" target="_blank">STEVAL-ISA107V1 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-isa107v1_schematic.pdf" target="_blank">STEVAL-ISA107V1 Schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, ST1S41IPHR, pwm, stm, stepdown_buck_regulator, step-down, analog_demo_boards</div> 4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHRhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr/revision/2Thu, 16 Dec 2021 03:14:15 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:31b19b4d-25fd-41fe-9de8-688bab17df72e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr#commentsRevision 2 posted to Documents by e14-publisher on 12/16/2021 3:14:15 AM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 1911, "type": "devtool", "part_number": "STEVAL-ISA107V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR</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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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-ISA107V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-44d83" 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('44d83'));" 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-ISA107V1 is a product evaluation board to aid in testing and designing with the ST1S41 in an SO-8 ePad package. The application is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.</p> <p>The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to V<sub>IN</sub> (100% duty-cycle). The ST1S41 integrates a 95 m&Omega; high side switch and a 69 m&Omega; low side synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers very compact solution with a minimum component count.</p> <p><strong>Applications:</strong></p> <ul> <li>uP/ASIC/DSP/FPGA core and I/O supplies</li> <li>Point of load for: STB, TVs, DVD</li> <li>Optical storage, hard disk drive, printers, audio/graphic cards</li> </ul> <p></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>4.0 V to 18 V input voltage</li> <li>Output voltage adjustable from 0.8 V</li> <li>850 kHz switching frequency</li> <li>Internal soft-start</li> <li>Integrated 95 m&Omega; and 69 m&Omega; Power MOSFETs</li> <li>All ceramic capacitor</li> <li>Enable</li> <li>Cycle by cycle current limiting</li> <li>Current fold back short circuit protection</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Demonstration 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">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/DM00064431.pdf" target="_blank">ST1S41 4 A step-down switching regulator (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">User Manual/Guide</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/DM00095594.pdf" target="_blank">DB2051: 4 A, 850 kHz fixed-frequency PWM synchronous step-down converter based on ST1S41PHR (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-isa107v1_bom.pdf" target="_blank">STEVAL-ISA107V1 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-isa107v1_gerber.zip" target="_blank">STEVAL-ISA107V1 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-isa107v1_schematic.pdf" target="_blank">STEVAL-ISA107V1 Schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, ST1S41IPHR, pwm, stm, stepdown_buck_regulator, step-down, analog_demo_boards</div> 4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHRhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr/revision/1Mon, 18 Oct 2021 20:19:29 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:31b19b4d-25fd-41fe-9de8-688bab17df72e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21789/4a-850-khz-fixed-frequency-pwm-synchronous-step-down-demonstration-board-based-on-st1s41phr#commentsRevision 1 posted to Documents by e14-publisher on 10/18/2021 8:19:29 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 1911, "type": "devtool", "part_number": "STEVAL-ISA107V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR</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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x497_1579630223.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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/size500/4a_850_khz_fixedfrequency_pwm_synchronous_stepdown_demonstration_board_based_on_st1s41phr_500x254_1579630223.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="4A 850 kHz Fixed-frequency PWM Synchronous Step-down Demonstration Board based on ST1S41PHR" /> </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-ISA107V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-ac1db" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2308944&nsku=74Y7686&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" 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('ac1db'));" data-farnell="2308944" data-newark="74Y7686" 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-ISA107V1 is a product evaluation board to aid in testing and designing with the ST1S41 in an SO-8 ePad package. The application is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.</p> <p>The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to V<sub>IN</sub> (100% duty-cycle). The ST1S41 integrates a 95 m&Omega; high side switch and a 69 m&Omega; low side synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers very compact solution with a minimum component count.</p> <p><strong>Applications:</strong></p> <ul> <li>uP/ASIC/DSP/FPGA core and I/O supplies</li> <li>Point of load for: STB, TVs, DVD</li> <li>Optical storage, hard disk drive, printers, audio/graphic cards</li> </ul> <p></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>4.0 V to 18 V input voltage</li> <li>Output voltage adjustable from 0.8 V</li> <li>850 kHz switching frequency</li> <li>Internal soft-start</li> <li>Integrated 95 m&Omega; and 69 m&Omega; Power MOSFETs</li> <li>All ceramic capacitor</li> <li>Enable</li> <li>Cycle by cycle current limiting</li> <li>Current fold back short circuit protection</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Demonstration 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">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/DM00064431.pdf" target="_blank">ST1S41 4 A step-down switching regulator (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">User Manual/Guide</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/DM00095594.pdf" target="_blank">DB2051: 4 A, 850 kHz fixed-frequency PWM synchronous step-down converter based on ST1S41PHR (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-isa107v1_bom.pdf" target="_blank">STEVAL-ISA107V1 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-isa107v1_gerber.zip" target="_blank">STEVAL-ISA107V1 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-isa107v1_schematic.pdf" target="_blank">STEVAL-ISA107V1 Schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, ST1S41IPHR, pwm, stm, stepdown_buck_regulator, step-down, analog_demo_boards</div>