[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-560760-105":59,"doc-detail-560760-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","low-cost-green-mode-pwm-controller-for-flyback-converters-sg6859","Low Cost Green-Mode PWM Controller for Flyback Converters SG6859","","Low Cost Green-Mode PWM Controller for Flyback Converters SG6859 integrates green-mode off-time modulation to reduce switching frequency under light load, minimizing standby power. Designed with BiCMOS fabrication, it targets low start-up current (9uA) and low operating current (3mA), while providing leading-edge blanking, current-mode operation, cycle-by-cycle current limiting, and UVLO. Stability is supported via synchronized slope compensation and internal compensation, with a constant output power limit across universal 90–264VAC input. Safety and protection include pulse-by-pulse current limiting and a 17V clamped gate driver output for external MOSFET protection.",{"@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/low-cost-green-mode-pwm-controller-for-flyback-converters-sg6859/560760/",{"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/low-cost-green-mode-pwm-controller-for-flyback-converters-sg6859/560760.png","ImageObject",300,407,{"name":92,"@type":93},"Rizky","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How does the SG6859 reduce standby power in green-mode operation?","Question",{"text":112,"@type":113},"It uses off-time modulation to linearly decrease the switching frequency under light-load conditions, helping the power supply meet strict power conservation requirements.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What are the key current-related performance targets of the SG6859?",{"text":117,"@type":113},"The SG6859 reduces start-up current to 9uA and operating current to 3mA, supporting lower standby consumption.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the SG6859 ensure safe and stable current-mode control?",{"text":121,"@type":113},"It includes synchronized slope compensation for stability of peak current mode control and cycle-by-cycle (pulse-by-pulse) current limiting for safe operation during short-circuits.","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},560760,1791817740,{"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":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},962085564807,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Low Cost Green-Mode PWM Controller for Flyback Converters SG6859  \n\n| FEATURES\u003Cbr>􀂄 Green-Mode PWM\u003Cbr>􀂄 Supports the “Blue Angel” Standard\u003Cbr>􀂄 Low Start-up Current (9uA)\u003Cbr>􀂄 Low Operating Current (3mA)\u003Cbr>􀂄 Leading-Edge Blanking\u003Cbr>􀂄 Constant Output Power Limit\u003Cbr>􀂄 Universal Input\u003Cbr>􀂄 Built-in Synchronized Slope Compensation\u003Cbr>􀂄 Current Mode Operation\u003Cbr>􀂄 Cycle-by-cycle Current Limiting\u003Cbr>􀂄 Under Voltage Lockout (UVLO)\u003Cbr>􀂄 Programmable PWM Frequency with Frequency Hopping\u003Cbr>􀂄 VDD Over Voltage Protection (Auto Restart)\u003Cbr>􀂄 Gate Output Voltage Clamped at 17V\u003Cbr>􀂄 Low Cost\u003Cbr>􀂄 Few External Components Required\u003Cbr>􀂄 Small SOT-26 and Dip 8 Packages\u003Cbr>APPLICATIONS\u003Cbr>General-purpose switching mode power supplies and flyback power converters, such as\u003Cbr>􀂄 Battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools\u003Cbr>􀂄 Power adapters for inkjet printers, video game consoles, and portable audio players\u003Cbr>􀂄 Open-frame SMPS for TV/DVD standby and other auxiliary supplies, home appliances, and consumer electronics\u003Cbr>􀂄 Replacements for linear transformers and RCCSMPS\u003Cbr>􀂄 PC 5V standby power. | DESCRIPTION\u003Cbr>This highly integrated PWM controller provides several special enhancements designed to meet the low standby-power needs of low-power SMPS. To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load conditions. This green-mode function enables the power supply to easily meet even the strictest power conservation requirements.\u003Cbr>The BiCMOS fabrication process enables reducing the start-up current to 9uA, and the operating current to 3mA. To further improve power conservation, a large start-up resistance can be used. Built-in synchronized slope compensation ensures the stability of peak current mode control. Proprietary internal compensation provides a constant output power limit over a universal AC input range (90VAC to 264VAC). Pulse-by-pulse current limiting ensures safe operation even during short-circuits.\u003Cbr>To protect the external power MOSFET from being damaged by supply over voltage, the SG6859’s output driver is clamped at 17V. SG6859 controllers can be used to improve the performance and reduce the production cost of power supplies. The SG6859 is the best choice for replacing linear and RCC-mode power adapters. It is available in 8-pin DIP and 6-pin SOT-26 packages. |\n| --- | --- |\n\nTYPICAL APPLICATION  \n© [System General Corp. -1-](System General Corp. -1- www.sg.com.tw)[ ](System General Corp. -1- www.sg.com.tw)[www.sg.com.tw](System General Corp. -1- www.sg.com.tw) • [www.fairchildsemi.com](www.fairchildsemi.com)  \nVersion 1.2.1(IAO33.0067.B2) September 28,2007  \nLow Cost Green-Mode PWM Controller for Flyback Converters SG6859  \nMARKING DIAGRAMS PIN CONFIGURATION  \nGND  \nFB  \nRI  \nGATE  \nVDD  \nNC  \nSENSE  \nSOT-26  \nGATE  \nVDD SENSE  \nGND  \nFB  \nNC  \nRI  \nORDERING INFORMATION  \n\n| Part Number | Pb-Free | Package |\n| --- | --- | --- |\n| SG6859TZ | | 6-Pin SOT-26 |\n| SG6859DZ | | 8-Pin DIP-8 |\n\nPIN DESCRIPTIONS  \n\n| Name | Pin No. | Type | Function |\n| --- | --- | --- | --- |\n|  | DIP-8(SOT-26) |  |  |\n| GATE | 1 / (6) | Driver Output | The totem-pole output driver for driving the power MOSFET. |\n| VDD | 2 / (5) | Supply | Power supply. |\n| NC | 3 |  | NC pin. |\n| SENSE | 4 / (4) | Analog Input | Current sense. This pin senses the voltage across a resistor. When the voltage reaches the internal threshold, PWM output is disabled. This activates\u003Cbr>over-current protection. This pin also provides current amplitude information for current-mode control. |\n| RI | 5 / (3) | Analog\u003Cbr>Input/Output | A resistor connected from the RI pin to ground will generate a constant current source for the SG6859 . This current is used to charge an internal capacitor, to determine the switching frequency. Increasing the resistance will reduce the amplitude of the current source and reduce the s","cbCaieLwl4LnbrOT","https://ap.wps.com/l/cbCaieLwl4LnbrOT","pdf",485450,13,"English","# Features\n## Applications\n## Description\n## Typical Application\n## Marking Diagrams\n## Pin Configuration\n## Ordering Information\n## Pin Descriptions\n## Block Diagram\n## Product Specification\n## Absolute Maximum Ratings\n## Recommended Operating Conditions","[{\"question\":\"How does the SG6859 reduce standby power in green-mode operation?\",\"answer\":\"It uses off-time modulation to linearly decrease the switching frequency under light-load conditions, helping the power supply meet strict power conservation requirements.\"},{\"question\":\"What are the key current-related performance targets of the SG6859?\",\"answer\":\"The SG6859 reduces start-up current to 9uA and operating current to 3mA, supporting lower standby consumption.\"},{\"question\":\"How does the SG6859 ensure safe and stable current-mode control?\",\"answer\":\"It includes synchronized slope compensation for stability of peak current mode control and cycle-by-cycle (pulse-by-pulse) current limiting for safe operation during short-circuits.\"}]","Low Cost Green-Mode PWM Controller for Flyback Converters SG6859 | PDF",1791804073,33]