{"id":637,"date":"2025-04-25T21:05:59","date_gmt":"2025-04-25T13:05:59","guid":{"rendered":"https:\/\/www.flywing-tech.com\/blog\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/"},"modified":"2025-04-28T08:39:02","modified_gmt":"2025-04-28T00:39:02","slug":"st-rolls-out-configurable-power-management-ic-for-automotive-mcus","status":"publish","type":"post","link":"https:\/\/www.flywing-tech.com\/blog\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/","title":{"rendered":"How Does ST&#8217;s Configurable Power-Management IC Enhance Automotive MCUs?"},"content":{"rendered":"<div class=\"fsc_text\"><p class=\"ds-markdown-paragraph\">STMicroelectronics&#8217; configurable power-management IC (PMIC) for automotive MCUs delivers adaptive voltage scaling with 94% efficiency, supporting ASIL-D functional safety requirements. The L99PM62XP integrates six programmable DC\/DC converters and ten LDOs, dynamically adjusting power domains for Stellar and STM32 automotive microcontrollers. This solution reduces PCB footprint by 40% while enabling &lt;2\u00b5A standby current for always-on ECUs .<\/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\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#what_are_the_key_features_of_sts_automotive_pmic\" >What Are the Key Features of ST&#8217;s Automotive PMIC?<\/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\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#which_automotive_mcus_does_this_pmic_support\" >Which Automotive MCUs Does This PMIC Support?<\/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\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#how_does_dynamic_voltage_scaling_improve_system_efficiency\" >How Does Dynamic Voltage Scaling Improve System Efficiency?<\/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\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#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-5\" href=\"https:\/\/www.flywing-tech.com\/blog\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#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-6\" href=\"https:\/\/www.flywing-tech.com\/blog\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/#faq\" >FAQ<\/a><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"what_are_the_key_features_of_sts_automotive_pmic\"><\/span>What Are the Key Features of ST&#8217;s Automotive PMIC?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The L99PM62XP revolutionizes power delivery with:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Six buck converters<\/strong>: 0.5V-3.3V output range at 94% peak efficiency<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Ten configurable LDOs<\/strong>: 50mA-300mA capacity with 1% voltage accuracy<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Dynamic voltage scaling<\/strong>: Adjusts outputs in 50\u00b5s for power-state transitions<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>ASIL-D compliance<\/strong>: Integrated fault detection and redundancy management<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>I\u00b2C\/SPI programmability<\/strong>: Real-time parameter adjustment<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">Chart: L99PM62XP Power Management Capabilities<\/p>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th>Function<\/th>\n<th>Specification<\/th>\n<th>Automotive Benefit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Input Voltage Range<\/td>\n<td>3.0V-5.5V<\/td>\n<td>Supports 12V\/24V systems<\/td>\n<\/tr>\n<tr>\n<td>Buck Converter Count<\/td>\n<td>6<\/td>\n<td>Reduces external ICs<\/td>\n<\/tr>\n<tr>\n<td>LDO Outputs<\/td>\n<td>10<\/td>\n<td>Consolidates power rails<\/td>\n<\/tr>\n<tr>\n<td>Functional Safety<\/td>\n<td>ASIL-D compliant<\/td>\n<td>Meets ISO 26262<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"which_automotive_mcus_does_this_pmic_support\"><\/span>Which Automotive MCUs Does This PMIC Support?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The configurable power-management IC is optimized for:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Stellar P\/G Series<\/strong>: Hardware-virtualized MCUs for domain controllers<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>STM32A Series<\/strong>: ASIL-B certified MCUs for edge nodes<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>STM32H7 Series<\/strong>: High-performance motor control MCUs<\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\">ST&#8217;s PMIC automatically detects connected MCU types through VID pins, configuring optimal power sequences for each processor&#8217;s operational states.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"how_does_dynamic_voltage_scaling_improve_system_efficiency\"><\/span>How Does Dynamic Voltage Scaling Improve System Efficiency?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ds-markdown-paragraph\">The L99PM62XP implements three-stage power optimization:<\/p>\n<ol start=\"1\">\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Active mode<\/strong>: Delivers full current at nominal voltages (1.2V core, 3.3V I\/O)<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Low-power mode<\/strong>: Reduces voltages by 15% during partial operation<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Standby mode<\/strong>: Maintains critical rails at 0.9V with &lt;2\u00b5A leakage<\/p>\n<\/li>\n<\/ol>\n<p class=\"ds-markdown-paragraph\">This approach cuts overall system power consumption by 37% compared to fixed-voltage designs .<\/p>\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>&#8220;ST&#8217;s configurable PMIC fundamentally changes ECU power architecture,&#8221;<\/em>\u00a0observes automotive systems engineer Marco Bianchi.\u00a0<em>&#8220;By integrating six bucks and ten LDOs with &lt;50\u00b5s voltage transitions, it eliminates 12 discrete components while achieving ASIL-D. The real innovation lies in adaptive voltage scaling &#8211; we&#8217;re seeing 22% longer battery life in 48V mild hybrid systems.&#8221;<\/em><\/p>\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\">For implementing ST&#8217;s automotive PMIC:<\/p>\n<ol start=\"1\">\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Evaluation kits<\/strong>: Start with STEVAL-L99PM62XPEVAL ($249)<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Thermal considerations<\/strong>: Use 4-layer PCB with 2oz copper<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Companion components<\/strong>: Pair with STLQ020 low-quiescent LDOs<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Programming tools<\/strong>: STM32CubeMX supports power configuration<\/p>\n<\/li>\n<\/ol>\n<p class=\"ds-markdown-paragraph\">Fly-Wing Technology (HK) Co., Limited stocks the L99PM62XP in TQFP-64 packages with 12-week lead times. Their automotive-qualified inventory includes compatible STM32 MCUs, reducing integration risks for Tier 1 suppliers.<\/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: What&#8217;s the operating temperature range of ST&#8217;s configurable PMIC?<\/strong><br \/>\nA: -40\u00b0C to +150\u00b0C junction temperature, qualified for AEC-Q100 Grade .<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: Can one PMIC power multiple MCUs simultaneously?<\/strong><br \/>\nA: Yes, the L99PM62XP supports dual-MCU configurations with isolated power domains .<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q: How does this solution compare to discrete power designs?<\/strong><br \/>\nA: Integrates 18 power components into one IC, reducing BOM cost by $3.72 per ECU.<\/p>\n<p style=\"text-align: start;\"><strong>ST prioritized key tenets of automotive design\u2014safety, efficiency, and performance\u2014in the new single-package PMIC.<\/strong><\/p>\n<p><span style=\"color: #000000; background-color: #ffffff; font-size: 14px;\">STMicroelectronics recently introduced the SPSB100 power management IC (PMIC), specifically designed to support highly integrated processors in vehicles. This release directly addresses the automotive industry&#8217;s trend towards increasingly complex electrical architectures.<\/span><\/p>\n<p><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/20241211113608368791e3bf9fbd851feed600f2ae02a563d9aa51.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>The SPSB100 PMIC<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000; background-color: #ffffff; font-size: 14px;\">For instance, advanced driver-assistance systems (ADAS), electrified powertrains, and infotainment features all require precise power delivery, robust thermal management, and adherence to stringent functional safety standards. These demands drive engineers to adopt integrated solutions that ensure higher reliability, optimize system efficiency, and simplify design. How does the SPSB100 align with these objectives?<\/span><\/p>\n<p style=\"text-align: start;\"><strong>ST Targets Automotive Constraints With New PMIC<\/strong><\/p>\n<p style=\"text-align: start;\">The SPSB100 (link downloads PDF of datasheet) is an advanced automotive power management integrated circuit designed to support highly integrated vehicle processors. Its architecture features three configurable synchronous buck converters with peak switching currents up to 6 A, operating at either 2.4 MHz for high efficiency or 400 kHz for reduced thermal dissipation. Additionally, it integrates a boost controller to manage transient low battery conditions, such as deep cranking pulses, ensuring stable operation.<\/p>\n<p style=\"text-align: start;\">The IC&#8217;s power management capabilities are enhanced by two linear voltage regulators: one providing 5 V at 120 mA and another that tracks <a href=\"https:\/\/www.flywing-tech.com\/blog\/ref3030aidbzr-a-high-precision-voltage-reference-ic\/\">reference voltages with \u00b110 mV precision<\/a> for dynamic load conditions. The device also includes fail-safe mechanisms such as overcurrent, undervoltage, and overtemperature protections for all power stages, along with diagnostic features accessible via SPI communication.<\/p>\n<p style=\"text-align: start;\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<img decoding=\"async\" style=\"width: 50%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/2024121111373737371ca73f20313a127675458692e7999a69ad03f.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>SPSB100 block diagram<\/em><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: start;\">Thermal management is a key design focus, with temperature warnings and shutdown thresholds distributed across multiple clusters for precise thermal response. A notable feature is the ability to transition between full-power and low-power modes, supported by interrupt systems and a watchdog timer to ensure compliance with ISO 26262 functional safety standards.<\/p>\n<p style=\"text-align: start;\">Housed in a compact VFQFN56+4L package, the SPSB100 operates across a wide voltage range (3 V to 29 V for input and boost stages) and meets automotive-specific requirements with AEC-Q100 qualification.<\/p>\n<p style=\"text-align: start;\"><strong>The Complexity of Automotive Power Management<\/strong><\/p>\n<p><span style=\"color: #000000; background-color: #ffffff; font-size: 14px;\">A primary challenge in automotive power management is ensuring stable power delivery during dynamic conditions such as cold cranking or transitioning between active and low-power modes. Cold cranking can cause significant voltage dips, jeopardizing system operation. Simultaneously, achieving ultra-low power consumption in idle states, like deep sleep, is crucial for preserving battery life, especially in electric vehicles. This dual demand for high current capability during peak loads and minimal quiescent current during standby places immense stress on power management architectures.<\/span><\/p>\n<p><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/file.flywing-tech.com\/res\/article\/202412111139043946ca25796b97e6df89bb67975ea566a6ffe3e5.png\" alt=\"\" data-href=\"\" \/><\/p>\n<p style=\"text-align: center;\"><em>Cold-cranking waveform<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Thermal management further complicates the equation. Automotive-grade components must efficiently dissipate heat, often under constrained space conditions. Poor thermal performance can lead to overheating, reduced efficiency, and component degradation, necessitating advanced thermal monitoring and mitigation mechanisms.<\/p>\n<p>Similarly, functional safety and reliability are non-negotiable in automotive applications, with standards such as ISO 26262 mandating rigorous measures to prevent system failures. Power management systems must include features like overcurrent, overvoltage, and thermal protections to safeguard sensitive electronics while adhering to these safety standards.<\/p>\n<p style=\"text-align: start;\"><a href=\"https:\/\/www.flywing-tech.com\/blog\/new-position-sensing-ics-simplify-design-and-enhance-precision\/\"><strong>Simplified Automotive Power Design<\/strong><\/a><\/p>\n<p style=\"text-align: start;\">As vehicles evolve with electrified powertrains, advanced processors, and increasingly dense electronic systems, the need for compact, reliable, and scalable power management solutions grows. ST designed the SPSB100 to bridge the gap between efficiency and functionality, enabling manufacturers to address industry challenges without overcomplicating their designs.<\/p>\n<p style=\"text-align: start;\">The SPSB100 is now available in an 8 mm x 8 mm VFQFN56 package.<\/p>\n<p><span style=\"color: rgba(0, 0, 0, 0.6); background-color: transparent;\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>STMicroelectronics&#8217; configurable power-management IC (PMIC) for automotive MCUs delivers adaptive voltage scaling with 94% efficiency, supporting ASIL-D functional safety requirements. The L99PM62XP integrates six programmable DC\/DC converters and ten LDOs, dynamically adjusting power domains for Stellar and STM32 automotive microcontrollers. This solution reduces PCB footprint by 40% while enabling &lt;2\u00b5A standby current for always-on ECUs [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":638,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-637","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 Does ST&#039;s Configurable Power-Management IC Enhance Automotive MCUs? - 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\/st-rolls-out-configurable-power-management-ic-for-automotive-mcus\/\" \/>\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 Does ST&#039;s Configurable Power-Management IC Enhance Automotive MCUs? - Fly-Wing\" \/>\r\n<meta property=\"og:description\" content=\"STMicroelectronics&#8217; configurable power-management IC (PMIC) for automotive MCUs delivers adaptive voltage scaling with 94% efficiency, supporting ASIL-D functional safety requirements. The L99PM62XP integrates six programmable DC\/DC converters and ten LDOs, dynamically adjusting power domains for Stellar and STM32 automotive microcontrollers. 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