{"id":26091,"date":"2023-09-14T09:30:00","date_gmt":"2023-09-14T08:30:00","guid":{"rendered":"https:\/\/www.engineernewsnetwork.com\/blog\/?p=26091"},"modified":"2023-09-13T10:41:42","modified_gmt":"2023-09-13T09:41:42","slug":"boost-sepic-controller-enables-50khz-led-wide-pwm-dimming-in-automotive-lighting-applications","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/boost-sepic-controller-enables-50khz-led-wide-pwm-dimming-in-automotive-lighting-applications\/","title":{"rendered":"Boost\/SEPIC controller enables 50kHz LED-wide PWM dimming in automotive lighting applications"},"content":{"rendered":"\n

Diodes Incorporated launches a boost\/single-ended primary inductance converter (SEPIC) controller for various automotive LED applications. The AL8853AQ<\/a><\/strong> is an automotive-compliant and highly integrated boost\/SEPIC controller that provides high performance with a reduced bill of materials (BOM) in automotive LED applications including exterior lights, headlamps, head-up displays (HUD), and backlight displays.<\/p>\n\n\n\n

Automotive headlamp manufacturers can use SEPIC topology to enable high or low-beam LED array drivers that operate directly from a vehicle’s battery, instead of using the conventional two-stage topology of a boost followed by a buck converter or a full-bridge buck-boost topology. The SEPIC functionality of the AL8853AQ supports cost-effective, simple buck-boost-like topology, which is well-suited for head-up display systems: an increasingly popular feature in automotive designs.<\/p>\n\n\n\n

The wide input range (6V to 40V) of the AL8853AQ supports a typical 12V vehicle battery voltage input. Its 200mV feedback reference voltage has \u00b13% tolerance to maintain tight brightness control while improving efficiency. The fixed 400kHz switching frequency of the AL8853AQ supports low electromagnetic interference (EMI) by using a fundamental frequency outside the medium wave (MW) band. In addition, this controller’s fast (50kHz) pulse width modulation (PWM) to analog dimming mode (100% down to 1%) prevents visible low or high-frequency flickering usually associated with PWM dimming. The AL8853AQ also includes robust protection features to guard against unexpected overvoltage, overcurrent, overtemperature, and diode and inductor short-circuit events.<\/p>\n","protected":false},"excerpt":{"rendered":"

Diodes Incorporated launches a boost\/single-ended primary inductance converter (SEPIC) controller for various automotive LED applications. The AL8853AQ is an automotive-compliant and highly integrated boost\/SEPIC controller that provides high performance with a reduced bill of materials (BOM) in automotive LED applications including exterior lights, headlamps, head-up displays (HUD), and backlight displays. Automotive headlamp manufacturers can use …<\/p>\n","protected":false},"author":1,"featured_media":26092,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104],"tags":[12055,753],"class_list":["post-26091","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-electronics","tag-al8853aq","tag-diodes-incorporated"],"yoast_head":"\nBoost\/SEPIC controller enables 50kHz LED-wide PWM dimming in automotive lighting applications - Engineer News Network<\/title>\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\/boost-sepic-controller-enables-50khz-led-wide-pwm-dimming-in-automotive-lighting-applications\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Boost\/SEPIC controller enables 50kHz LED-wide PWM dimming in automotive lighting applications - Engineer News Network\" \/>\n<meta property=\"og:description\" content=\"Diodes Incorporated launches a boost\/single-ended primary inductance converter (SEPIC) controller for various automotive LED applications. The AL8853AQ is an automotive-compliant and highly integrated boost\/SEPIC controller that provides high performance with a reduced bill of materials (BOM) in automotive LED applications including exterior lights, headlamps, head-up displays (HUD), and backlight displays. 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