[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-560606-105":59,"doc-detail-560606-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","str-x6700-series-power-ic-for-quasi-resonant-type-switching-power-supply","STR-X6700 Series - Power IC for Quasi-Resonant Type Switching Power Supply","","STR-X6700 series power ICs are designed for quasi-resonant type switching power supplies, integrating a power MOSFET and a controller IC to deliver high efficiency and low noise across the full load range. Key control strategies include multi-mode switching based on load, bottom-skip quasi-resonant operation, and current-mode control. The built-in PWM oscillator with a minimum ~22 kHz frequency, soft-start, step-drive to reduce switching noise, maximum ON-time limitation, protections, and overcurrent input compensation support stable, low-distortion operation. Applications target digital consumer electronics, home appliances, OA equipment, industrial machines, and communication devices.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/str-x6700-series-power-ic-for-quasi-resonant-type-switching-power-supply/560606/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/str-x6700-series-power-ic-for-quasi-resonant-type-switching-power-supply/560606.png","ImageObject",300,407,{"name":92,"@type":93},"นรินทร์","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-19","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What switching operation modes are used across the load range in the STR-X6700 series?","Question",{"text":112,"@type":113},"Operation switches in three steps according to load conditions. Standby load uses UVLO intermittent oscillation or auto burst-oscillation, low-to-middle load uses Bottom-Skip Quasi-Resonant (Bottom-Skip QR), and middle-to-rated/heavy load uses Quasi-Resonant (QR).","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the built-in PWM oscillator help during startup and fault conditions?",{"text":117,"@type":113},"The PWM runs with a minimum frequency of about 22 kHz until the quasi-resonant signal becomes valid, reducing stress on components at startup and under load-shorted conditions.",{"name":119,"@type":110,"acceptedAnswer":120},"What protection functions are included in the STR-X6700 series?",{"text":121,"@type":113},"The series includes overcurrent protection (OCP, pulse-by-pulse), overload protection (OLP, latch shutdown), and overvoltage protection (OVP, latch shutdown), along with other protection features listed in the document.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},560606,1792071590,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":24},2336475104957,"https://ap-avatar.wpscdn.com/avatar/22000c4c6bd8a5076e1?x-image-process=image/resize,m_fixed,w_180,h_180&k=1787554080175789136","STR-X6700 Series  \nPower IC for Quasi-Resonant Type Switching Power Supply with High Efficiency and Low Noise in Full Load Range  \n■ General Descriptions  \nThe STR-X6700 series products are power ICs for quasi-resonant type switching power supplies, incorporating a power MOSFET and a controller IC, The product achieves high efficiency and low noise power supply systems by the quasi-resonant operation and the bottom-skip quasi-resonant operation.  \nThe STR-W6700 series products are the different package (TO-220F) versions.  \n■ Features  \n􀀁 Multi-Mode Control  \nThe operation mode switching with three steps according to load conditions achieves the optimal high efficiency and low noise power supply systems across the full load range.  \n(The confirmation of product number is necessary because some functions are different in each product.)  \n・In Standby (Under Standby Load Conditions):  \n-UVLO Intermittent Oscillation by low output voltage---Switched by Standby Signal, or  \n-Auto Burst-Oscillation---Switched Automatically  \n・Under Low to Middle Load Conditions: Bottom-Skip Quasi-Resonant Operation (Bottom-Skip QR)  \n・Under Middle to Rating (or Heavy) Load Conditions: Quasi-Resonant Operation (QR)  \n􀀁 Current-Mode Control  \n􀀁 Built-in PWM Oscillator  \nThe PWM operates with the minimum frequency of around 22 kHz, until the quasi-resonant signal becomes valid, reduces the stress on components at startup and load-shorted.  \n􀀁 Soft-Start Function  \n􀀁 Step-Drive Function, reducing switching noise  \n􀀁 Built-in Maximum ON Time Limitation Circuit  \nThe function limits the maximum ON time of power MOSFET, during the transitions at low input voltage, power ON/OFF.  \n􀀁 Input Compensation at Overcurrent  \nThe function reduces the distortion of overcurrent operation point to AC input voltage change by adding three components.  \n􀀁 Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET  \n􀀁 Various Protections  \nOvercurrent Protection (OCP) -------------------------------Pulse-by-Pulse  \nOverload Protection (OLP) -----------------------------------Latch Shutdown  \nOvervoltage Protection (OVP)-------------------------------Latch Shutdown  \n■ Applications  \nSwitching Power Supplies for  \nDigital Consumer Equipment; LCD-TVs, PDP-TVs, CRT-TVs, etc., Home Appliances, OA Equipments, Industry Machines, Communication Devices, Others  \n■ Product Lineup  \n\n| Product No. | MOSFET\u003Cbr>VDSS MIN\u003Cbr>(V) | RDS(ON)\u003Cbr>MAX\u003Cbr>(Ω) | BurstOscillation | Bottom\u003Cbr>Skip QR | Product No. | MOSFET\u003Cbr>VDSS MIN\u003Cbr>(V) | RDS(ON)\u003Cbr>MAX\u003Cbr>(Ω) | BurstOscillation | Bottom\u003Cbr>Skip QR |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| STR-X6729 | 450 | 0.189 | N | Y | STR-X6750F | 650 | 0.62 | Y | N |\n| STR-X6737 | 500 | 0.36 | Y | Y | STR-X6759N | 650 | 0.385 | N | Y |\n| STR-X6737M | 500 | 0.36 | N | Y | STR-X6759F | 650 | 0.385 | Y | N |\n| STR-X6756 | 650 | 0.73 | Y | Y | STR-X6759B | 650 | 0.385 | N | N |\n| STR-X6757 | 650 | 0.62 | Y | Y | STR-X6768N | 800 | 1.0 | N | Y |\n| STR-X6757N | 650 | 0.62 | N | Y | STR-X6769 | 800 | 0.66 | Y | Y |\n| STR-X6750B | 650 | 0.62 | N | Y | STR-X6769B | 800 | 0.66 | N | N |\n\nY: Including the function N: Excluding the function  \n■ Typical Application Circuit  \n■ Typical Operation Waveforms  \nTransitions between Bottom-Skip QR Operation and Quasi-Resonant Operation  \nLoad Change Light ~~ ~~ Heavy  \n1 Bottom--Skip QR QR  \nFrequency fOSC (kHz) Frequency fOSC (kHz)  \n140  \n120  \n100  \n80  \n60  \n40  \n20  \n0  \n140  \n120  \n100  \n80  \n60  \n40  \n20  \n0  \nSTR-X6700 Input Power-Frequency  \n100VAC  \n0  \n50  \n100 150 Input Power PIN (W)  \n200  \n250  \n240VAC  \n0 50 100 150 200 250 Input Power PIN (W)  \nWarning  \n􀀁 The contents in this document are subject to changes, for improvement and other purposes, without notice.  \nMake sure that this is the latest version of the document before use.  \n􀀁 The operation and circuit examples in this document are provided for reference purposes only. Sanken assumes no liability for violation of indust","cbCaiq4ZmRWPLLJD","https://ap.wps.com/l/cbCaiq4ZmRWPLLJD","pdf",98181,"English","# General Descriptions\n# Features\n## Multi-Mode Control\n## Current-Mode Control and Supporting Functions\n# Applications\n# Product Lineup\n# Typical Application Circuit\n# Typical Operation Waveforms","[{\"question\":\"What switching operation modes are used across the load range in the STR-X6700 series?\",\"answer\":\"Operation switches in three steps according to load conditions. Standby load uses UVLO intermittent oscillation or auto burst-oscillation, low-to-middle load uses Bottom-Skip Quasi-Resonant (Bottom-Skip QR), and middle-to-rated/heavy load uses Quasi-Resonant (QR).\"},{\"question\":\"How does the built-in PWM oscillator help during startup and fault conditions?\",\"answer\":\"The PWM runs with a minimum frequency of about 22 kHz until the quasi-resonant signal becomes valid, reducing stress on components at startup and under load-shorted conditions.\"},{\"question\":\"What protection functions are included in the STR-X6700 series?\",\"answer\":\"The series includes overcurrent protection (OCP, pulse-by-pulse), overload protection (OLP, latch shutdown), and overvoltage protection (OVP, latch shutdown), along with other protection features listed in the document.\"}]","STR-X6700 Series - Power IC for Quasi-Resonant Type Switching Power Supply | PDF",1791803682]