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It uses zero-voltage switching to reduce EMI and improves power conversion efficiency for lower operating temperature and higher reliability. The controller provides wide input range operation, user-defined PWM dimming and operating frequency, soft-start for reliable CCFL ignition, and built-in open-lamp and over-voltage protection with under-voltage lockout, shutdown delay, and enable pin reset.",{"@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/oz964-phase-shift-pwm-controller-data-sheet-revision-history/560878/",{"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/oz964-phase-shift-pwm-controller-data-sheet-revision-history/560878.png","ImageObject",300,407,{"name":92,"@type":93},"Đào","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the primary function of the OZ964 controller?","Question",{"text":112,"@type":113},"OZ964 is a phase-shift PWM controller designed for high-voltage DC/DC and DC/AC applications, including CCFL backlight control for LCDs.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does OZ964 achieve high efficiency and reduce EMI?",{"text":117,"@type":113},"It operates in a zero-voltage switching mode that minimizes electromagnetic interference while improving power-conversion efficiency.",{"name":119,"@type":110,"acceptedAnswer":120},"Which protections and control features are built into OZ964?",{"text":121,"@type":113},"It includes open-lamp protection, over-voltage protection, under-voltage lockout, soft start, shutdown delay for brownout events, and an enable pin toggle to reset after shutdown.","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},560878,1791858286,{"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":34,"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},1374402968488,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","Controlled Recipient \\#101461 pr inted on 10/25/2004. Updates will be provided to registered rec ip ients .  \n OZ964  \nChange Summary  \nCHANGES  \nREVISION HISTORY  \n\n| No. | Applicable Section | Description | Page(s) |\n| --- | --- | --- | --- |\n| 1 | Title | Change the title to read ‘Phase-Shift PWM Controller’ | 1 |\n| 2 | Ordering Information | Add OZ964GN, OZ964IG, OZ964IGN, OZ964D & OZ964DN | 1 |\n| 3 | General Description | Add 1st paragraph ‘OZ964 is a high…LCD.’ | 1 |\n| 4 | Functional Block Diagram Description | Add 1st paragraph 1st sentence ‘Specific DC/CD…’ | 5 |\n| 5 | Reference Application Circuit | Add DC/DC Reference Application Circuit | 10 |\n| 6 | Package information | Correct 20 Pin SOIC 300mil drawing | 12 |\n| 7 | Throughout data sheet | Miscellaneous corrections | --- |\n\n\n| Revision No. | Description of change | Release Date |\n| --- | --- | --- |\n| 0.95 | Initial Release | 1/13/2004 |\n| 0.96 | 1. Ordering information: add OZ964SN & OZ964ISN. 2. Pin\u003Cbr>Description: modified pin description of CTIMR, DIM. 3. Electrical Characteristics: revise a)‘Nominal Voltage’ Typ limit, b)‘Normal Operating Frequency’Typ limit, c)‘Ramp Peak’ Typ limit, d)‘Operating Frequency’Typ limit, e)‘Negative-Going Threshold Voltage’Max limit, f)‘SST Current’ Typ limit, g)‘CTIMR Current 1’Typ limit, h)‘Protection Release Threshold’ Typ limit, i)‘PDR_A/ PDR_C’Typ`limit, j)‘Enable’ Min limit, k)‘NDR_B/ NDR_D’Typ limit, l)‘BBM Time Between PDR and NDR’Typ limit, m)‘Minimum Overlap’ Typ limit. 4. Simplified Functional Block Diagram. 5. Modified formula in No. 4 Ignition & No. 5 Normal Operation in Functional Information. 6. Revise Application Circuit. 7. Miscellaneous corrections. | 3/19/2004 |\n| 1.0 | 1. Electrical Characteristics: a) Fill in Min & Max limits of all parameters b) Correct ‘SST Protection Release Threshold’ Typ limit.\u003Cbr>2. Application Circuit: Correct a) C10 to 6.8n, b) T1 to 28:2200 . 3. Miscellaneous corrections. | 4/5/2004 |\n| 1.1 | 1. Footer: Add patent number 6,259,615 2. Application circuit: a.) Delete R3, R7, R6 & R11 . b) Change R9 value from 45.3k to 47K | 7/29/2004 |\n\n09/03/04 OZ964-DS-1 .2 Page 0  \nCopyright 􀂔 2004 by O2Micro All Rights Reserved U.S. Patent No. 6,259,615  \nCONFIDENTIAL  \nControlled Recipient \\#101461 pr inted on 10/25/2004. Updates will be provided to registered rec ip ients .  \n OZ964  \nPhase-Shift PWM Controller  \nFEATURES  \n• Controller for high-voltage DC/DC and DC/AC converters  \n• High efficiency, zero-voltage switching  \n• Supports wide input voltage range  \n• Constant operating frequency  \n• Built-in PWM dimming control with wide dimming range  \n• Soft start function  \n• Built-in intelligence for ignition and normal operation of CCFLs  \n• Built-in open-lamp protection and overvoltage protection  \n• Shutdown delay for input voltage brownout condition  \n• Built-in under-voltage lockout protection  \n• Toggle pin to reset the IC after shutdown  \n• Low stand-by power  \nORDERING INFORMATION  \n\n| Part\u003Cbr>Number | Temp Range | Package |\n| --- | --- | --- |\n| OZ964S | 0° C to 70° C | 20-pin SSOP |\n| OZ964SN | 0° C to 70° C | 20-pin SSOP, Leadfree |\n| OZ964 IS | -40° C to +85°C | 20-pin SSOP |\n| OZ964ISN | -40° C to +85°C | 20-pin SSOP, Leadfree |\n| OZ964G | 0° C to 70° C | 20-pin SOIC |\n| OZ964GN | 0° C to 70° C | 20-pin SOIC, Leadfree |\n| OZ964IG | -40° C to +85°C | 20-pin SOIC |\n| OZ964IGN | -40° C to +85°C | 20-pin SOIC, Leadfree |\n| OZ964D | 0° C to 70° C | 20-pin PDIP |\n| OZ964DN | 0° C to 70° C | 20-pin PDIP, Leadfree |\n\nOZ964 operates in a zero-voltage switching mode that minimizes electromagnetic interference (EMI) . In addition, OZ964 achieves a high power-conversion efficiency resulting in a lower operating temperature and higher system reliability.  \nOZ964 supports a wide input voltage range and provides a constant, user-defined, operating frequency, ensuring that the CCFLs operate at a fixed frequency. This eliminates interference among CCFLs and the LCD panel. Interference causes electro","cbCaigkLgRhU9p3c","https://ap.wps.com/l/cbCaigkLgRhU9p3c","pdf",332317,14,"English","# Change Summary\n## Changes\n## Revision History","[{\"question\":\"What is the primary function of the OZ964 controller?\",\"answer\":\"OZ964 is a phase-shift PWM controller designed for high-voltage DC/DC and DC/AC applications, including CCFL backlight control for LCDs.\"},{\"question\":\"How does OZ964 achieve high efficiency and reduce EMI?\",\"answer\":\"It operates in a zero-voltage switching mode that minimizes electromagnetic interference while improving power-conversion efficiency.\"},{\"question\":\"Which protections and control features are built into OZ964?\",\"answer\":\"It includes open-lamp protection, over-voltage protection, under-voltage lockout, soft start, shutdown delay for brownout events, and an enable pin toggle to reset after shutdown.\"}]","OZ964 - Phase-Shift PWM Controller - data sheet revision history | PDF",1791804384,35]