{"id":31933,"date":"2026-04-28T09:15:00","date_gmt":"2026-04-28T08:15:00","guid":{"rendered":"https:\/\/www.engineernewsnetwork.com\/blog\/?p=31933"},"modified":"2026-04-22T10:47:11","modified_gmt":"2026-04-22T09:47:11","slug":"photovoltaic-output-photocoupler-for-automotive-and-industrial-equipment","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/photovoltaic-output-photocoupler-for-automotive-and-industrial-equipment\/","title":{"rendered":"Photovoltaic-output photocoupler for automotive and industrial equipment"},"content":{"rendered":"\n

Toshiba announces the launch of the TLX9920, a photovoltaic-output photocoupler<\/a><\/strong> designed to provide an isolated gate drive voltage for power MOSFETs, particularly high-side and back-to-back configurations used in solid-state relays (SSRs). Applications include automotive battery management systems (BMS), onboard chargers (OBC), inverters, and other high-voltage subsystems, as well as energy storage systems (ESS) and industrial power control equipment.<\/p>\n\n\n\n

As automotive and industrial systems continue shifting from mechanical relays to solid-state relays, designers require reliable, highly isolated gate drive solutions that eliminate the need for secondary-side power supplies. The new TLX9920 generates the gate drive voltage directly from its photovoltaic output, enabling simplified circuit design while maintaining reinforced isolation between control and power domains.<\/p>\n\n\n\n

The TLX9920 is optimised for driving high-voltage power MOSFETs in SSR applications. When paired with external MOSFETs, it enables high-voltage, high-current switching that is difficult to achieve with conventional photorelays. Unlike mechanical relays, SSRs have no physical contacts, eliminating contact wear, reducing maintenance requirements, and improving long-term reliability. The device is qualified to the AEC-Q101 automotive reliability standard.<\/p>\n\n\n\n

Housed in a thin SO6L package (3.84mm \u00d7 10.0mm \u00d7 2.1mm), the TLX9920 features a minimum creepage distance of 8mm and a high isolation voltage rating of 5000Vrms (min.). This makes it suitable for applications requiring reinforced insulation. For example, IEC 60664-1 specifies that a creepage distance of 8mm may be required for systems operating at 400V or higher in pollution degree 2 environments – requirements that the TLX9920 meets.<\/p>\n\n\n\n

With a minimum open-circuit voltage (VOC<\/sub>) of 13.5V and minimum short-circuit current (ISC<\/sub>) of 8\u03bcA at a forward current (IF<\/sub>) of 10mA, the TLX9920 provides sufficient gate drive capability for MOSFET control without the need for an additional isolated bias supply. Its integrated discharge circuit further simplifies design and ensures reliable turn-off performance.<\/p>\n","protected":false},"excerpt":{"rendered":"

Toshiba announces the launch of the TLX9920, a photovoltaic-output photocoupler designed to provide an isolated gate drive voltage for power MOSFETs, particularly high-side and back-to-back configurations used in solid-state relays (SSRs). Applications include automotive battery management systems (BMS), onboard chargers (OBC), inverters, and other high-voltage subsystems, as well as energy storage systems (ESS) and industrial …<\/p>\n","protected":false},"author":1,"featured_media":31934,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104],"tags":[9404,14756,94],"class_list":["post-31933","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-electronics","tag-photovoltaic-output-photocoupler","tag-tlx9920","tag-toshiba"],"yoast_head":"\nPhotovoltaic-output photocoupler for automotive and industrial equipment - 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\/photovoltaic-output-photocoupler-for-automotive-and-industrial-equipment\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Photovoltaic-output photocoupler for automotive and industrial equipment - Engineer News Network\" \/>\n<meta property=\"og:description\" content=\"Toshiba announces the launch of the TLX9920, a photovoltaic-output photocoupler designed to provide an isolated gate drive voltage for power MOSFETs, particularly high-side and back-to-back configurations used in solid-state relays (SSRs). 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