{"id":6090,"date":"2018-03-30T10:00:19","date_gmt":"2018-03-30T09:00:19","guid":{"rendered":"https:\/\/engineernewsnetwork.com\/blog\/?p=6090"},"modified":"2018-03-28T12:30:56","modified_gmt":"2018-03-28T11:30:56","slug":"space-radiation-tolerant-eight-channel-source-driver","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/space-radiation-tolerant-eight-channel-source-driver\/","title":{"rendered":"Space: Radiation-tolerant eight-channel source driver"},"content":{"rendered":"<span class=\"highlight highlight-blue\"><a href=\"https:\/\/www.microsemi.com\/product-directory\/drivers-high-side\/5097-aahs298b\" target=\"_blank\" rel=\"noopener\">Microsemi Corporation<\/a><\/span> announces the AAHS298B\u00a0radiation-tolerant eight-channel source driver for space applications.<\/p>\n<p>It has been successfully qualified and certified by the US Defense Logistics Agency (DLA) as Qualified Manufacturers List (QML) Class V and Q, with four Standard Microcircuits Drawings (SMDs) listed, is now in production.<br \/>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block; text-align: center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-7565662001938327\" data-ad-slot=\"7585079586\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><br \/>\nOffered in two package types with various screening options, the device has met the key requirements to operate in space environments, as the qualifications are mandatory for design-ins for space programs and for manufacturers to be listed on the QML by the DLA.<\/p>\n<p>\u201cSuccessfully achieving these qualifications is vital to securing design-ins in satellite programs requiring the highest quality and reliability performance,\u201d said Dorian Johnson, <span class=\"highlight highlight-blue\"><a href=\"https:\/\/engineernewsnetwork.com\/blog\/microsemis-polarfire-fpga\/\" target=\"_blank\" rel=\"noopener\">Microsemi<\/a><\/span>\u2019s high-reliability product marketing manager.\u00a0\u201cObtaining QML status not only demonstrates Microsemi\u2019s continued commitment to\u00a0supplying integrated space solutions, but gives our customers the added assurance that\u00a0our radiation-tolerant AAHS298B source driver can meet the\u00a0demanding requirements of\u00a0the DLA while offering the ability to use the device in conjunction with our LX7730 telemetry controller, LX7720 motor controller and LX7710 diode array devices.\u201d<\/p>\n<span class=\"highlight highlight-blue\"><a href=\"https:\/\/engineernewsnetwork.com\/blog\/microsemi-announces-availability-of-switchtec-pcie-gen-4-switch-development-platform\/\" target=\"_blank\" rel=\"noopener\">Microsemi<\/a><\/span>\u2019s high-performance AAHS298B source driver provides an interface between spacecraft bus electronics and other subsystems, with the highest output source current for space applications requiring radiation tolerance.<\/p>\n<p>Command signal outputs from the spacecraft\u2019s digital control electronics are typically TTL (5-volt) (V), CMOS (3V) and high-level (12V) logic and are not directly compatible with users\u2019 command input requirements.<\/p>\n<p>These user requirements occur in payload, power, thermal and housekeeping subsystems and range between 14V and 45V.<\/p>\n<p>The AAHS298B is an interface between these systems, providing a continuous 700 milliamps (mA) current to switched high side-drivers on the output.<\/p>\n<p>The integration of eight non-inverting high side channels gives satellite designers reduced weight, resulting in smaller board space, and higher reliability as compared to discrete implementations.<\/p>\n<p>As many satellite manufacturers and projects require the DLA QML certifications and listings as assurance the product meets Military Performance Specification (MIL-PRF) requirements, the AAHS298B meets these standards as part of the company\u2019s growing portfolio of mixed signal integrated circuits (ICs) for demanding space applications.<\/p>\n<p><strong>Demanding space applications<\/strong><\/p>\n<p>\u201cIncreasing requirements for higher output currents combined with demands for weight and board space reductions were compelling reasons to initially investigate Microsemi\u2019s AAHS298B source driver for our designs,\u201d said Glenn Lommasson, vice president of Design &amp; Development Engineering Services (DDES) Corp. \u201cIn addition, the presence of the internal clamp diode in the driver output allowed a much more efficient method for implementing transient protection during inductive kickback events, which reduced the number of clamp diodes needed in other solutions.<\/p>\n<p>\u201cThe recent device qualification and SMD listing as a QML-V device was also a very important element for us to baseline this part as more programs are mandating Technical Operating Report (TOR) guidelines for parts quality, DLA certification and radiation assurance.\u201d<\/p>\n<p>According to Euroconsult&#8217;s 2017 report titled, <em>Satellites to Be Built &amp; Launched by 2026<\/em>, 300 satellites with a launch mass over 50 kilograms will be launched on average each year by 2026 for government agencies and commercial organisations worldwide.<\/p>\n<p>This represents an average of $30 billion per year for the space industry to build and launch them, representing a 25% increase over the past decade.<\/p>\n<span class=\"highlight highlight-blue\"><a href=\"https:\/\/engineernewsnetwork.com\/blog\/microsemi-enables-terabit-otn-switching-cards-for-flexible-optical-networks\/\" target=\"_blank\" rel=\"noopener\">Microsemi<\/a><\/span>\u2019s expertise in mixed signal space solutions comes from over 20 years of custom and standard design and manufacturing experience in providing its customers with innovative space system solutions.<\/p>\n<p>As satellite manufacturers typically require Class V and Q qualifications, the designations provide customers with an added level of assurance that the radiation-tolerant AAHS298B eight-channel source driver has met the stringent industry standards.<\/p>\n<p>The QML qualification achievement allows designers across the entire spectrum of space designs, from low cost commercial and scientific applications to human rated and top priority government systems, to use the parts without cumbersome part selection justifications or source control drawings.<\/p>\n<span class=\"highlight highlight-blue\"><a href=\"https:\/\/engineernewsnetwork.com\/blog\/microsemis-libero-soc-development-software-certified-for-iec-61508-functional-safety-requirements\/\" target=\"_blank\" rel=\"noopener\">Microsemi<\/a><\/span>\u2019s AAHS298B source driver is ideally suited for applications including command and data handling power subsystems, spacecraft control electronics attitude control, relay\/solenoid drivers, as well as stepper and\/or servo motor drivers.<\/p>\n<p>Key features of the device include:<\/p>\n<p>* 700mA output source current<br \/>\n* Zero quiescent off-current<br \/>\n* Full channel isolation to prevent fault propagation<br \/>\n* Internal ground clamp diodes<br \/>\n* 75V output breakdown voltage<br \/>\n* TTL, 5V and 12V Logic-compatible<br \/>\n* Internal thermal shutdown to protect against over-current and soft-start occurrences<br \/>\n* Radiation-tolerant to 100kRad (Si) total dose, 50kRad (Si) enhanced low dose radiation sensitivity (ELDRS)<br \/>\n* Temperature range of -55\u02daC to 125\u02daC<br \/>\n* Available in 20-pin ceramic small outline integrated circuit (SOIC) with formed and flat leads<br \/>\n* QML listed with SMD 5962-15231<br \/>\n* Four SMDs covering Q and V screening flows for two package options.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsemi Corporation announces the AAHS298B\u00a0radiation-tolerant eight-channel source driver for space applications. It has been successfully qualified and certified by the US Defense Logistics Agency (DLA) as Qualified Manufacturers List (QML) Class V and Q, with four Standard Microcircuits Drawings (SMDs) listed, is now in production. Offered in two package types with various screening options, the &hellip;<\/p>\n","protected":false},"author":1,"featured_media":6092,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104],"tags":[3359,597,3360],"class_list":["post-6090","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-electronics","tag-aahs298b-eight-channel-source-driver","tag-microsemi","tag-spacecraft-bus-electronics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Space: Radiation-tolerant eight-channel source driver - Engineer News Network<\/title>\n<meta name=\"description\" content=\"Microsemi Corporation announces the AAHS298B radiation-tolerant eight-channel source driver for space applications\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engineernewsnetwork.com\/blog\/space-radiation-tolerant-eight-channel-source-driver\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Space: Radiation-tolerant eight-channel source driver - 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