[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-563053-105":59,"doc-detail-563053-en":124},{"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":117,"head_meta":119,"extra_data":121,"updated_unix":123},105,"en","high-performance-off-line-pwm-converters-dk1203-datasheet","High Performance Off-line PWM Converters - DK1203 Datasheet","","This technical document provides a comprehensive overview of the DK1203, a high-performance fly-back AC-DC switched-mode power supply control chip developed by Dongke Semiconductor. Designed with advanced CMOS integration, the chip features a built-in 700V high-voltage BJT and patented self-power supply circuitry, which minimizes the need for external components and simplifies transformer design. It supports global input voltages from 85V to 265V AC, offering a switching frequency of 65KHz and low no-load power consumption of under 0.3W. The DK1203 includes robust built-in protection mechanisms against over-temperature, over-voltage, over-current, and short-circuit conditions, making it an ideal choice for diverse applications such as AC-DC power adapters, LED lighting, air conditioning systems, and consumer electronics like DVD players or monitors. The document also includes pin configuration details and power ratings for both ordinary and top-grade DIP-8 packaged versions, serving as a critical reference for engineers designing isolated power supply circuits.",{"@graph":69,"@context":116},[70,84,99],{"@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/high-performance-off-line-pwm-converters-dk1203-datasheet/563053/",{"url":83,"name":65,"@type":85,"author":86,"headline":65,"publisher":89,"fileFormat":92,"inLanguage":63,"description":67,"dateModified":93,"datePublished":93,"encodingFormat":92,"isAccessibleForFree":94,"interactionStatistic":95},"DigitalDocument",{"name":87,"@type":88},"MrHarris58","Person",{"url":74,"name":90,"@type":91},"DocShare","Organization","application/pdf","2026-10-12",true,{"@type":96,"interactionType":97,"userInteractionCount":4},"InteractionCounter",{"@type":98},"ViewAction",{"@type":100,"mainEntity":101},"FAQPage",[102,108,112],{"name":103,"@type":104,"acceptedAnswer":105},"What are the primary applications for the DK1203 chip?","Question",{"text":106,"@type":107},"The DK1203 is suitable for AC-DC power adapters, LED power supplies, air conditioner power supplies, and power supplies for DVD, VCD, TV, and monitor equipment.","Answer",{"name":109,"@type":104,"acceptedAnswer":110},"What protection functions are integrated into the DK1203?",{"text":111,"@type":107},"It includes protection against short-circuit output, secondary-side open circuit, over-temperature, over-voltage, and over-current conditions.",{"name":113,"@type":104,"acceptedAnswer":114},"How does the DK1203 simplify power supply design?",{"text":115,"@type":107},"The chip features a built-in 700V high-voltage BJT and a patented self-power supply circuit, which significantly reduces the number of required external components and enables a simple two-winding transformer design.","https://schema.org",{"og:url":83,"og:type":118,"og:title":65,"og:site_name":90,"og:description":67},"article",{"robots":120,"canonical":83},"index,follow",{"doc_id":122,"site_id":62},563053,1791810421,{"code":4,"msg":5,"data":125},{"doc_id":122,"user_id":126,"nickname":87,"user_avatar":127,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":128,"file_id":129,"file_url":130,"file_type":131,"file_size":132,"view_count":4,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"language":133,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":134,"faqs":135,"seo_title":136,"seo_description":67,"update_tm":123,"read_time":81},687212988360,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","High Performance Off-line PWM Converters  \nDescription  \nDK1203 is a fly-back AC-DC switched-mode power supply controlling chip. It is designed with high integration of CMOS circuit, with short circuit output, secondary-side open circuit, over temperature, over voltage and other protection functions. With built-in HV power transistor and patented self-power supply circuit, it has the characteristics that lots of external components are saved and the design of transformer is simple (only two windings are needed in transformer for isolated output circuit), etc.  \nApplications  \n􀁺 AC-DC power adapter  \n􀁺 LED power supply  \n􀁺 Air conditioner power supply  \n􀁺 DVD/VCD/TV/Monitor power supply, etc.  \nMain Features  \n􀁺 Global voltage input AC 85V-265V  \n􀁺 Built-in 700V high voltage BJT  \n􀁺 Internal HV start-up circuit  \n􀁺 No-load consumption power \u003C 0.3W  \n􀁺 65KHz PWM switching frequency  \n􀁺 Patented self-power supply design  \n􀁺 Built-in slope compensation circuit  \n􀁺 Frequency modulation for low EMI  \n􀁺 Over temperature, over current, over voltage, short circuit output and secondary open circuit protection  \n􀁺 4KV ESD  \nPackage/Order Information  \nDIP-8  \nOB  \nVCC  \nGND  \nNC  \nOC  \nOC  \nNC  \nFB  \n\n| Product Model | Package Type | Typical Power |\n| --- | --- | --- |\n|  |  | 85-265VAC |\n| DK1203 (Ordinary) | DIP-8 | 12W |\n| DK1203 (Top-grade) | DIP-8 | 15W |\n\nRemark: Test typical power in closed environment @45℃ ambient temperature.  \nFunction Structure Diagram","cbCain7lagfEaNBH","https://ap.wps.com/l/cbCain7lagfEaNBH","pdf",516721,"English","# Product Overview\n## Applications\n## Main Features\n## Package and Order Information\n## Function Structure Diagram","[{\"question\":\"What are the primary applications for the DK1203 chip?\",\"answer\":\"The DK1203 is suitable for AC-DC power adapters, LED power supplies, air conditioner power supplies, and power supplies for DVD, VCD, TV, and monitor equipment.\"},{\"question\":\"What protection functions are integrated into the DK1203?\",\"answer\":\"It includes protection against short-circuit output, secondary-side open circuit, over-temperature, over-voltage, and over-current conditions.\"},{\"question\":\"How does the DK1203 simplify power supply design?\",\"answer\":\"The chip features a built-in 700V high-voltage BJT and a patented self-power supply circuit, which significantly reduces the number of required external components and enables a simple two-winding transformer design.\"}]","High Performance Off-line PWM Converters - DK1203 Datasheet | PDF"]