<!-- Bootstrap core CSS --> <link href="/css/www-style.css" rel="stylesheet"> <link href="/css/bootstrap.css" rel="stylesheet"> <link href="/css/newsletter.css" rel="stylesheet"> <link href="/css/alfontawesome-all.css" rel="stylesheet"> <!-- Custom fonts for this template --> <section> <div class="key-container"> <div class="cus-content-subscribe"> <div class="row no-gutters"> <div class=" col-md-12"> <div class="page-header"> <a class="cus-btn btn-sm" href="https://www.richtek.com/My Richtek/Newsletters.aspx"><i class="fas fa-envelope"></i>&nbsp;&nbsp;Subscribe to Richtek Newsletter</a> </div> </div> </div> </div> </div> <div class="key-container pb-5"> <!-- Title start --> <div class="cus-content"> <div class="row no-gutters "> <div class="col-md-12 "> <div class="page-header"> <h1 class="font-weight-bold">80V Hot Swap Controller with Precision Multi-Level Overcurrent: Protection for Dynamic AI Workloads </h1> <i class="far fa-calendar-alt date-i"></i> <span class="ml-2 date">OCT. 30, 2025 | Newsletter Issue 53</span> </div> </div> </div> </div> <!-- Content End --> <div class="cus-content"> <div class="row no-gutters "> <div class="col-md-12 mb-20 text-center"> <a href="https://www.youtube.com/watch?v=BW4rhehAmWo&&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank"> <img class="img-center " style="max-width:600px;" alt="80V Hot Swap Controller with Multi-Level Precision OCP" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-53/html-images/en_I53_design_video_EN.gif"></a> </div> <div class="col-md-12 mb-40"> <p>As power demands in data centers continue to escalate, modular systems such as servers and power distribution boards increasingly rely on hot swap capability to improve scalability while maintaining high operational efficiency.</p> <p>AI workloads, with their wide and highly dynamic current surges, present a tough challenge for hot swap controllers. Traditional hot swap controllers with only a single level of overcurrent protection (OCP) often struggle to differentiate between genuine faults and normal transient peaks, leading to false shutdowns or missed faults that threaten system reliability.</p> <p>The Richtek<a href="https://www.richtek.com/RedirectToProduct?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;font-size: 1.1rem;"> RTQ1954 </a>80V hot swap controller is designed to meet these demands. Its multi-level OCP architecture precisely identifies short current pulses, repetitive overloads and sustained soft shorts, delivering robust protection for high-power systems with wide dynamic loads.</p> </div> <div class="col-md-12 "> <div class="mb-2"> <div class="section-title font-weight-bold mb-30 pb-3">Key Advantages</div> </div> </div> <div class="col-md-12 text-center"> <img class="img-center " style="max-width:800px;" alt="80V Hot Swap Controller with Precision Multi-Level Overcurrent" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-53/html-images/en_I53_01_2_EN.jpg"> </div> <div class="col-md-12 mb-40"> <ol style="line-height:2;"> <li style="list-style-position:outside;"> <b>Four-Level OCP</b>：Start-up inrush current protection (OCP1), adjustable steady-state overcurrent protection (OCP2), dynamic pulse current protection (OCP3), and a fast-response circuit breaker (CB) cover all load scenarios.</li> <li style="list-style-position:outside;"> <b>Non-accumulative Timer</b>： Digital and analog OCP timers prevent accumulative false trips under repetitive high-duty-cycle pulses.</li> <li style="list-style-position:outside;"> <b>Soft Short Detection</b>：Four adjustable thresholds ensure even high-impedance sustained soft shorts are detected and managed. </li> <li style="list-style-position:outside;"> <b>Streamlined Thermal Design </b>：Allows steady state system thermal design including external MOSFETs be based on actual DC power rather than elevated fault thresholds, reducing component count and cost.</li> </ol> </div> <div class="col-md-12 mb-40"> <p>With CPU/GPU power levels rising rapidly, thermal design for hot swap controllers can be optimized around the average DC load. The<a href="https://www.richtek.com/RedirectToProduct?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;font-size: 1.1rem;"> RTQ1954 </a>complements this by providing comprehensive protection across a wide range of overcurrent conditions, enabling power system designs that combine high performance with robust reliability.</p> </div> <div class="col-md-12 "> <div class="mb-2"> <div class="section-title font-weight-bold mb-30 pb-3">Learn More</div> </div> </div> <div class="col-md-12 "> <p>Discover how the <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;font-size: 1.1rem;"> RTQ1954 </a> safeguards an 8.5 kW system against dynamic AI loads while optimizing performance and thermal performance. </p> <div class="btn-block pb-4 pt-3"> <a href="https://www.richtek.com/Design%20Support/Technical%20Document/AN092?sc_lang=en" target="_blank" class="btn-sm btn-primary py-2 px-3">Application Note <i class="fas fa-arrow-right pl-2"></i> </a> </div> <p>For more on NVIDIA AI data center power solutions and the latest industry updates, check these out </p> <ul style="line-height:2;"> <li><a href="https://developer.nvidia.com/blog/building-the-800-vdc-ecosystem-for-efficient-scalable-ai-factories/?ncid=so-link-262195&linkId=100000386911433" target="_blank" style="text-decoration: none; color: #37a6d9;font-size: 1.1rem;">Building the 800 VDC Ecosystem for Efficient, Scalable AI Factories <i class="fas fa-arrow-right pl-2"></i> </a></li> <li><a href="https://blogs.nvidia.com/blog/gigawatt-ai-factories-ocp-vera-rubin/" target="_blank" style="text-decoration: none; color: #37a6d9;font-size: 1.1rem;">NVIDIA, Partners Drive Next-Gen Efficient Gigawatt AI Factories in Buildup for Vera Rubin <i class="fas fa-arrow-right pl-2"></i> </a></li> </ul> </div> </div> </div> <div class="cus-content"> <div class="row no-gutters"> <div class="col-md-12 pt-3"> <div class="new-product"> <h3 class="font-weight-bold">FEATURED PRODUCTS</h3> <p>Check out the products that meet your area of interest for more information</p> </div> </div> </div> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-53/html-images/en_I53-p1-2.jpg" alt="RTQ1954"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ1954 ^{<span class="badge rounded-pill bg-warning text-light"><small>New</small></span>}</div> <span class="text-danger">10V to 80V Hot Swap Controller with Accurate Monitoring, PMBus Interface and Dynamic Transient Load Support</span> <p> 80V hot swap controller with PMBus and wide dynamic load support.</p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank">See RTQ1954</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ1954&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en" target="_blank">Download Datasheet</a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <!-- Content End --> <!-- Keywords start --> <div class="tag-content"> <div class="row no-gutters"> <div class="col-md-12 mb-40"> <div class="new-product"> <p>Want to keep up to date with all our latest news and information? <a class="link" href="https://www.richtek.com/My Richtek/Newsletters.aspx" target="_blank">Subscribe here!</a></p> </div> </div> </div> <div class="row no-gutters align-items-start"> <div class="col-12"> <a class="badge btn-tag" href="https://www.richtek.com/applications/communication-enterprise/data-center?&ActiveTab=Data Center&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en">Data Center</a> <a class="badge btn-tag" href="https://www.richtek.com/Parametric%20Search/Parametric%20Search?tree_id=95&bookmarkid=194b4873-0423-eb11-80e1-005056863180&blockId=%7bECEFFF7A-4E11-4C23-BFEC-65278A5808D0%7d&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue53EN&sc_lang=en">Hot Swap Controllers</a> </div> </div> </div> </div> </div> </section>

true

techInsightContent