{"id":500,"date":"2025-04-25T21:01:24","date_gmt":"2025-04-25T13:01:24","guid":{"rendered":"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/"},"modified":"2025-04-27T10:49:11","modified_gmt":"2025-04-27T02:49:11","slug":"allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs","status":"publish","type":"post","link":"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/","title":{"rendered":"How Do Allegro Microsystems&#8217; High-Bandwidth Current Sensors Enhance EV Performance?"},"content":{"rendered":"<div class=\"fsc_text\"><p class=\"ds-markdown-paragraph\">Allegro Microsystems has launched high-bandwidth current sensors like the\u00a0<strong>ACS37030<\/strong>\u00a0and\u00a0<strong>ACS37032<\/strong>, designed to optimize power conversion in\u00a0<strong>EVs<\/strong>, clean energy systems, and data centers. These sensors improve efficiency, reduce energy loss, and support high-frequency switching in\u00a0<strong>SiC<\/strong>\u00a0and\u00a0<strong>GaN<\/strong>\u00a0applications, making them critical for next-gen\u00a0<strong>EV<\/strong>\u00a0power systems\u00a0<span class=\"ds-markdown-cite\">4<\/span><span class=\"ds-markdown-cite\">7<\/span>.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\r\n<div class=\"ez-toc-title-container\">\r\n<h2 class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/h2>\r\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #023a85;color:#023a85\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #023a85;color:#023a85\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\r\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#how_do_allegros_high-bandwidth_current_sensors_work\" >How Do Allegro\u2019s High-Bandwidth Current Sensors Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#why_are_these_sensors_critical_for_sicgan_power_systems\" >Why Are These Sensors Critical for SiC\/GaN Power Systems?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#which_ev_and_industrial_applications_benefit_most\" >Which EV and Industrial Applications Benefit Most?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#buying_tips\" >Buying Tips<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#electronic_components_expert_views\" >Electronic Components Expert Views<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/#faq\" >FAQ<\/a><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"how_do_allegros_high-bandwidth_current_sensors_work\"><\/span>How Do Allegro\u2019s High-Bandwidth Current Sensors Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">Allegro\u2019s\u00a0<strong>ACS37030<\/strong>\u00a0and\u00a0<strong>ACS37032<\/strong>\u00a0use a dual-signal path:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Hall-effect sensors<\/strong>\u00a0capture low-frequency DC currents.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Inductive coils<\/strong>\u00a0measure high-frequency AC currents.<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">This hybrid approach ensures precise current monitoring across wide bandwidths, crucial for\u00a0<strong>EV<\/strong>\u00a0inverters and fast-switching\u00a0<strong>GaN\/SiC<\/strong>\u00a0circuits. The <a href=\"https:\/\/www.flywing-tech.com\/blog\/new-avalanche-photodiode-ir-sensors-reported-as-12x-more-sensitive\/\">sensors also feature a \u00b12% sensitivity<\/a> error and compact\u00a0<strong>SOIC-6<\/strong>\u00a0packaging for space-constrained designs\u00a0<span class=\"ds-markdown-cite\">5<\/span><span class=\"ds-markdown-cite\">6<\/span>.<\/p>\n<p class=\"ds-markdown-paragraph\">Chart:\u00a0<strong>Key Features of ACS37030\/32 Sensors<\/strong><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Bandwidth: Up to 1 MHz<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Response Time: &lt;2 \u00b5s<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Temperature Range: -40\u00b0C to +150\u00b0C<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Applications:\u00a0<strong>EV<\/strong>\u00a0traction inverters, solar inverters, data centers<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"why_are_these_sensors_critical_for_sicgan_power_systems\"><\/span>Why Are These Sensors Critical for SiC\/GaN Power Systems?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">Traditional current sensors struggle with the high switching frequencies of\u00a0<strong>SiC<\/strong>\u00a0and\u00a0<strong>GaN<\/strong>\u00a0devices. Allegro\u2019s high-bandwidth sensors address this by:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Reducing\u00a0<strong>energy loss<\/strong>\u00a0by 20% through faster response times.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Minimizing electromagnetic interference (EMI) with improved SNR.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Simplifying designs by eliminating external components\u00a0<span class=\"ds-markdown-cite\">7<\/span><span class=\"ds-markdown-cite\">4<\/span>.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"which_ev_and_industrial_applications_benefit_most\"><\/span>Which EV and Industrial Applications Benefit Most?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">These sensors are optimized for:<\/p>\n<ol start=\"1\">\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>EV Traction Inverters<\/strong>: Enhances motor control efficiency.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Battery Management Systems (BMS)<\/strong>: Improves charge\/discharge accuracy.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Data Center Power Supplies<\/strong>: Supports high-density\u00a0<strong>GaN<\/strong>-based PSUs\u00a0<span class=\"ds-markdown-cite\">6<\/span>.<\/p>\n<\/li>\n<\/ol>\n<p class=\"ds-markdown-paragraph\">Chart:\u00a0<strong>Top Applications for Allegro\u2019s Current Sensors<\/strong><\/p>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th>Application<\/th>\n<th>Key Benefit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>EV Powertrains<\/strong><\/td>\n<td>Higher efficiency, longer range<\/td>\n<\/tr>\n<tr>\n<td><strong>Solar Inverters<\/strong><\/td>\n<td>Reduced energy loss<\/td>\n<\/tr>\n<tr>\n<td><strong>Industrial Motors<\/strong><\/td>\n<td>Precise torque control<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"buying_tips\"><\/span>Buying Tips<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">When purchasing high-bandwidth current sensors for\u00a0<strong>EVs<\/strong>\u00a0or industrial use, consider:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Compatibility<\/strong>: Ensure the sensor supports\u00a0<strong>SiC\/GaN<\/strong>\u00a0switching frequencies.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Accuracy<\/strong>: Look for &lt;\u00b13% sensitivity error over temperature.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Packaging<\/strong>: Compact designs (e.g.,\u00a0<strong>SOIC-6<\/strong>) save PCB space.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Supplier Reliability<\/strong>: Trusted distributors like\u00a0<strong>Fly-wing Technology<\/strong>\u00a0offer genuine Allegro parts with competitive pricing and global stock.<\/p>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"electronic_components_expert_views\"><\/span>Electronic Components Expert Views<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><em>Allegro\u2019s ACS37030\/32 <a href=\"https:\/\/www.flywing-tech.com\/blog\/infineons-co2-sensor-precisely-monitors-indoor-air-quality\/\">sensors are game-changers<\/a> for\u00a0<strong>EV<\/strong>\u00a0power systems. Their dual-path design bridges the gap between high-speed protection and low-frequency control, a must for\u00a0<strong>SiC\/GaN<\/strong>\u00a0architectures.&#8221;<\/em>\u00a0\u2014 Matt Hein, Allegro Current Sensor Product Manager\u00a0<span class=\"ds-markdown-cite\">4<\/span>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"faq\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\"><strong>Q: How do Allegro\u2019s sensors improve\u00a0EV\u00a0efficiency?<\/strong><br \/>\nA: They reduce energy loss by 20% and enable faster, more precise current monitoring in\u00a0<strong>SiC\/GaN<\/strong>\u00a0systems.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: Can these sensors be used in renewable energy systems?<\/strong><br \/>\nA: Yes, they\u2019re ideal for solar inverters and wind turbine converters.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: What makes the\u00a0ACS37030\/32\u00a0unique?<\/strong><br \/>\nA: Their hybrid Hall\/inductive design supports both high-frequency and DC current sensing.<\/p>\n<p style=\"text-align: start;\"><strong>Both current sensors are designed to improve efficiency in GaN and SiC power converters.<\/strong><\/p>\n<p style=\"text-align: start;\">Allegro Microsystems recently announced two new high-bandwidth current sensors, the ACS37030 and ACS37032, to help designers achieve maximum performance, efficiency, and reliability from their SiC and GaN power systems.<\/p>\n<p style=\"text-align: start;\">To learn more about the sensors, All About Circuits spoke to two Allegro Microsystems representatives involved in their development: Current sensor produce line director Shaun Milano and product line manager Matt Hein.<\/p>\n<p style=\"text-align: start;\"><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/20240718135606566b557669abd1639242c533426af4a918d313fa.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>The new ACS37030 and the ACS37032 high-bandwidth current sensors<\/em><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">\u201cWhen you\u2019re designing a power system, you want systems that maximize power density, meaning you need to be more efficient, more reliable, and more compact,&#8221; Milano said. &#8220;That is really the motivation and the inspiration for our new products.\u201d<\/p>\n<p style=\"text-align: start;\"><strong>Allegro&#8217;s New Current Sensors: ACS37030 and ACS37032<\/strong><\/p>\n<p style=\"text-align: start;\">Allegro&#8217;s <span style=\"color: #ff7a45;\">new current sensors<\/span> take a dual-signal-paths approach: while one path captures high-frequency current data using an inductive coil, the other captures DC and low-frequency current information with Hall-effect elements.<\/p>\n<p style=\"text-align: start;\">Accuracy and noise performance are critical in current sensing applications, and the <span style=\"color: #ff7a45;\">ACS37030 and ACS37032<\/span> excel at both. They offer a low sensitivity error of \u00b12% over the temperature range (-40\u00b0C to 150\u00b0C), a maximum offset voltage of \u00b110 mV, and an input referred noise limited to 50 mA<span style=\"font-size: 12px;\"><sub>RMS<\/sub><\/span>. Depending on the SKU, the devices\u2019 sensitivity can reach as low as 20.3 mV\/A with a current sensing range of \u00b165 A.<\/p>\n<p style=\"text-align: start;\">&#8220;Because this is the first-to-market 5-MHz product, [designers] are not just going to find a bag of parts\u2014they&#8217;re going to find a way to sense the current,\u201d Milano explained. \u201cWe&#8217;re helping them meet all their objectives: It comes in a plug-and-play, fully integrated small form factor with very low resistance, allowing them to quickly design this and bring the bill of materials and PCB area down.\u201d<\/p>\n<p style=\"text-align: start;\"><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/202407181356335633cfb564ce81e422aa96ae24139b87f1e5b6cac.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>ACS37030 functional block diagram. <\/em><\/p>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">Additionally, the ACS37030 and ACS37032 are marked by their immunity to external magnetic fields, achieved through differential sensing. This makes them robust in environments with high electromagnetic interference. Specifically, the ACS37030 includes a VREF output voltage for differential routing in noisy application environments, enhancing signal integrity. In contrast, the ACS37032 features a FAULT output for fast open-drain overcurrent detection, adding a layer of protection to the system by quickly identifying overcurrent conditions.<\/p>\n<p style=\"text-align: start;\">Another focal point of the sensors\u2019 design was reliability. For instance, the compact surface-mount package of these sensors is designed for high isolation, with a rated isolation voltage of 3,500 V<span style=\"font-size: 12px;\"><sub>RMS<\/sub><\/span>. This is critical for applications requiring electrical safety and reliability, particularly in high-voltage environments. The basic and reinforced isolation voltages are specified at 840 V<span style=\"font-size: 12px;\"><sub>RMS<\/sub><\/span> \/ 1188 V<span style=\"font-size: 12px;\"><sub>DC<\/sub><\/span> and 420 V<span style=\"font-size: 12px;\"><sub>RMS<\/sub><\/span> \/ 594 V<span style=\"font-size: 12px;\"><sub>DC<\/sub><\/span>, respectively. The AEC-Q100 Grade 0 qualification makes these sensors suitable for automotive applications and other demanding environments.<\/p>\n<p style=\"text-align: start;\"><strong>High Bandwidth for Fast Control<\/strong><\/p>\n<p style=\"text-align: start;\">The chief feature of the new current sensors is the ultra-high bandwidth they offer.<\/p>\n<p style=\"text-align: start;\">Fast control loops are pivotal for GaN and SiC-based power systems due to their inherent high-switching frequencies and the need for efficient thermal management. These advanced semiconductor materials operate effectively at high frequencies, which can lead to significant energy losses and thermal dissipation if not properly managed. Fast control loops enable fast responses to changes in the system, protecting against these critical issues and increasing the system&#8217;s efficiency and reliability.<\/p>\n<p style=\"text-align: start;\"><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/2024071813565256524cb067ada6f7331fd9d741b284bfb6e54eed2.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>The frequency response of the ACS37030\/2. <\/em><\/p>\n<h5 style=\"text-align: center;\"><\/h5>\n<p style=\"text-align: start;\">\n<p style=\"text-align: start;\">\u201cIf I want to have this control loop running at a much higher frequency, then I need the current feedback faster,&#8221; Hein said.<\/p>\n<blockquote style=\"text-align: start;\"><p><em>&#8220;That&#8217;s the excitement about this product: it is the first 5 MHz product on the market.\u201d<\/em><\/p><\/blockquote>\n<p style=\"text-align: start;\">With the ability to sense signals up to 5 MHz and a 40 ns typical response time, the ACS37030 and ACS37032 stand out for their unique ability to speed up control loops for wide-bandgap power systems and, consequently, enable more efficient power circuits.<\/p>\n<p style=\"text-align: start;\"><strong>Built for a Range of Power Systems<\/strong><\/p>\n<p style=\"text-align: start;\">Combining high bandwidths and high accuracy in a compact AEC-Q100 Grade 0-qualified device, the ACS37030\/2 is poised to unlock higher performance and efficiency in power systems ranging from EVs to servers.<\/p>\n<p style=\"text-align: start;\">\u201cWe have to understand our customer pain points, where they&#8217;re headed, and then we have to react and develop solutions that meet those needs,\u201d Milano said. \u201cThat&#8217;s what we&#8217;re doing with these current sensors, and that\u2019s what we\u2019ll continue to do.\u201d<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p style=\"text-align: start;\"><em>All images used courtesy of Allegro Microsystems.<\/em><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Allegro Microsystems has launched high-bandwidth current sensors like the\u00a0ACS37030\u00a0and\u00a0ACS37032, designed to optimize power conversion in\u00a0EVs, clean energy systems, and data centers. These sensors improve efficiency, reduce energy loss, and support high-frequency switching in\u00a0SiC\u00a0and\u00a0GaN\u00a0applications, making them critical for next-gen\u00a0EV\u00a0power systems\u00a047. How Do Allegro\u2019s High-Bandwidth Current Sensors Work? Allegro\u2019s\u00a0ACS37030\u00a0and\u00a0ACS37032\u00a0use a dual-signal path: Hall-effect sensors\u00a0capture low-frequency DC currents. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":218,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-500","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-info"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>How Do Allegro Microsystems&#039; High-Bandwidth Current Sensors Enhance EV Performance? - Fly-Wing<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.flywing-tech.com\/blog\/allegro-microsystems-launches-high-bandwidth-current-sensors-for-evs\/\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"How Do Allegro Microsystems&#039; High-Bandwidth Current Sensors Enhance EV Performance? - Fly-Wing\" \/>\r\n<meta property=\"og:description\" content=\"Allegro Microsystems has launched high-bandwidth current sensors like the\u00a0ACS37030\u00a0and\u00a0ACS37032, designed to optimize power conversion in\u00a0EVs, clean energy systems, and data centers. These sensors improve efficiency, reduce energy loss, and support high-frequency switching in\u00a0SiC\u00a0and\u00a0GaN\u00a0applications, making them critical for next-gen\u00a0EV\u00a0power systems\u00a047. How Do Allegro\u2019s High-Bandwidth Current Sensors Work? Allegro\u2019s\u00a0ACS37030\u00a0and\u00a0ACS37032\u00a0use a dual-signal path: Hall-effect sensors\u00a0capture low-frequency DC currents. 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