[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-561060-105":3,"detail-sidebar-cat-0-en-105":73,"doc-detail-561060-en":122},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":66,"head_meta":68,"extra_data":70,"updated_unix":72},105,"en","fsq510-fsq510h-green-mode-fairchild-power-switch-fps-for-quasi-resonant-converter","FSQ510, FSQ510H - Green Mode Fairchild Power Switch (FPS™) for Quasi-Resonant Converter","","FSQ510(H) is an integrated PWM controller with SenseFET designed for quasi-resonant offline switch-mode power supplies, delivering lower EMI and higher conversion efficiency than fixed-frequency hard-switched converters. Key functions include variable-frequency control with inherent frequency modulation, minimum-voltage switching for efficiency, burst-mode operation for low standby power, and pulse-by-pulse current limiting. The device integrates protection features such as OLP, AOCP, TSD with hysteresis, and UVLO with hysteresis, plus internal start-up and a 5 ms soft start. Compared with discrete solutions, it reduces component count, size, and weight while improving reliability for quasi-resonant flyback converters.",{"@graph":14,"@context":65},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/fsq510-fsq510h-green-mode-fairchild-power-switch-fps-for-quasi-resonant-converter/561060/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/fsq510-fsq510h-green-mode-fairchild-power-switch-fps-for-quasi-resonant-converter/561060.png","ImageObject",300,407,{"name":42,"@type":43},"Pentious","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-22","2026-10-12",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59],{"name":60,"@type":61,"acceptedAnswer":62},"What design and integration aspects reduce external components compared with discrete solutions?","Question",{"text":63,"@type":64},"The FSQ510(H) combines a PWM controller, an internal fixed-frequency oscillator, an optimized gate driver, internal soft start, loop-compensation current sources, and self-protection circuitry with a SenseFET-based power switch. This integration reduces total cost, component count, size, and weight while improving efficiency, productivity, and reliability.","Answer","https://schema.org",{"og:url":32,"og:type":67,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":69,"canonical":32},"index,follow",{"doc_id":71,"site_id":7},561060,1791885310,{"code":4,"msg":74,"data":75},"success",[76,80,84,88,92,96,101,106,111,114,118],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":77,"show_sort_weight":78,"slug":79},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":81,"show_sort_weight":82,"slug":83},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Exam",70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Comic",60,"comic",{"id":93,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":94,"slug":95},6,50,"technology",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},7,"Healthcare",40,"healthcare",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},8,"Research & Report",30,"research-report",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":108,"show_sort_weight":109,"slug":110},9,"Religion & Spirituality",20,"religion-spirituality",{"id":109,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":109,"slug":113},"World Cup","world-cup",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":115,"slug":117},10,"Lifestyle","lifestyle",{"id":119,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":55,"slug":121},19,"General","general",{"code":4,"msg":74,"data":123},{"doc_id":71,"user_id":124,"nickname":42,"user_avatar":125,"doc_module":4,"category_id":93,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":126,"file_id":127,"file_url":128,"file_type":129,"file_size":130,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":131,"language":132,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":133,"faqs":134,"seo_title":135,"seo_description":12,"update_tm":136,"read_time":137},1374404730887,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","PRELIMINARY DATASHEET  \n\n| | \u003Cbr>August 2006 |\n| --- | --- |\n| FSQ510, FSQ510H—Green Mode Fairchild Power Switch (FPSTM) for Quasi-Resonant Converter\u003Cbr>– Low EMI and High Efficiency |  |\n| Features\u003Cbr>􀂃 Uses a DMOS Integrated Power Switch\u003Cbr>􀂃 Optimized for Quasi-Resonant Converter (QRC)\u003Cbr>􀂃 Low EMI through Variable Frequency Control and Inherent Frequency Modulation\u003Cbr>􀂃 High Efficiency through Minimum Voltage Switching\u003Cbr>􀂃 Extended Quasi-Resonant Switching for Wide Load Ranges\u003Cbr>􀂃 Small Frequency Variation for Wide Load Ranges\u003Cbr>􀂃 Advanced Burst-Mode Operation for Low Standby Power Consumption\u003Cbr>􀂃 Pulse-by-Pulse Current Limit\u003Cbr>􀂃 Various Protection Functions: Overload Protection (OLP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis\u003Cbr>􀂃 Under-Voltage Lockout (UVLO) with Hysteresis\u003Cbr>􀂃 Internal Start-up Circuit\u003Cbr>􀂃 Internal High-Voltage SenseFET (700V)\u003Cbr>􀂃 Built-in Soft Start (5ms) | Applications\u003Cbr>􀂃 Cell Phone Chargers\u003Cbr>􀂃 Auxiliary Power Supplies for PC and White Goods\u003Cbr>Description\u003Cbr>A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ510(H) is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant offline Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading Edge Blanking (LEB), optimized gate driver, internal soft start, temperaturecompensated precise current sources for loop compensation, and self-protection circuitry. Compared with discrete MOSFET and PWM controller solution, the FSQ510(H) can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for cost-effective designs of quasi-resonant switching flyback converters. |\n| Ordering Information\u003Cbr>Part\u003Cbr>Number Package Pb\u003Cbr>Free Operating\u003Cbr>Temperature\u003Cbr>Range Current\u003Cbr>Limit RDS(ON)\u003Cbr>(MAX) Maximum Output Power (1) Replaces\u003Cbr>Devices 230VAC ± 15%(2) 85-265VAC Adapter(3) Open\u003Cbr>Frame(4) Adapter(3) Open\u003Cbr>Frame(4) FSQ510 7-DIP Yes -25℃ to +85℃ 320mA 32Ω 5W 7W 4W 5W FSD210B FSQ510H 8-DIPH Yes -25℃ to +85℃ 320mA 32Ω 5W 7W 4W 5W FSD210HD\u003Cbr>Notes:\u003Cbr>1. The junction temperature can limit the maximum output power.\u003Cbr>2. 230VAC or 100/115VAC with doubler.\u003Cbr>3. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient.\u003Cbr>4. Maximum practical continuous power in an open-frame design at 50°C ambient temperature. |  |\n\nFSQ510, FSQ510H Green Mode Fairchild Power Switch (FPSTM) for Quas i-Resonant Converter  \n© 2006 Fairchild Semiconductor Corporation [www.fairchildsemi.com](www.fairchildsemi.com)  \n[FSCQ510](FSCQ510) , FSCQ510H Rev. 0.0.3  \nPRELIMINARY DATASHEET  \n\n| Application Circuit |  |\n| --- | --- |\n| AC\u003Cbr>IN\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>| Vo\u003Cbr>|\n| Figure 1. Typical Application Circuit\u003Cbr>Internal Block Diagram\u003Cbr>Sync VSTR Vcc D\u003Cbr>\u003Cbr>Figure 2. Internal Block Diagram |  |\n\nFSQ510, FSQ510H Green Mode Fairchild Power Switch (FPSTM) for Quas i-Resonant Converter  \n© 2006 Fairchild Semiconductor Corporation [www.fairchildsemi.com](www.fairchildsemi.com)  \n[FSQ510](FSQ510) , FSQ510H Rev. 0.0.3 2  \nPRELIMINARY DATASHEET  \n\n| Pin Assignments |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- |\n| GND\u003Cbr>GND\u003Cbr>VFB\u003Cbr>Sync | \u003Cbr>FSQ510\u003Cbr>\u003Cbr>\u003Cbr>| VSTR\u003Cbr>D\u003Cbr>VCC | VSTR\u003Cbr>VFB\u003Cbr>Sync\u003Cbr>GND | \u003Cbr>FSQ510H | D\u003Cbr>VCC\u003Cbr>GND\u003Cbr>GND |\n| Figure 3. Package diagrams for FSQ510 and FSQ510H\u003Cbr>Pin Definitions\u003Cbr>Pin \\# Name Description 1,2(5)\u003Cbr>(4,5,6)(6) GND This pin is the control ground and the SenseFET source. 3 (2) VFB This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied t","cbCaif1wKmVuLDcr","https://ap.wps.com/l/cbCaif1wKmVuLDcr","pdf",730251,15,"English","# Features\n# Applications\n# Description\n# Ordering Information\n# Application Circuit\n# Internal Block Diagram\n# Pin Assignments\n## Pin Definitions\n# Absolute Maximum Ratings","[{\"question\":\"What design and integration aspects reduce external components compared with discrete solutions?\",\"answer\":\"The FSQ510(H) combines a PWM controller, an internal fixed-frequency oscillator, an optimized gate driver, internal soft start, loop-compensation current sources, and self-protection circuitry with a SenseFET-based power switch. This integration reduces total cost, component count, size, and weight while improving efficiency, productivity, and reliability.\"}]","FSQ510, FSQ510H - Green Mode Fairchild Power Switch (FPS™) for Quasi-Resonant Converter | PDF",1791804890,38]