英文文献 科技类 原文及翻译 (电子 电气 自动化 通信).doc

英文文献 科技类 原文及翻译 (电子 电气 自动化 通信).doc

  1. 1、本文档共14页,可阅读全部内容。
  2. 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
  3. 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载
  4. 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
外文文献翻译 BALLAST CONTROL IC IR2156(S) Introduction The IR2156 incorporates a high voltage half-bridgegate driver with a programmable oscillator and state diagram to form a complete ballast control IC. The IR2156 features include programmable preheat and run frequencies, programmable preheat time, programmable dead-time, and programmable over-current protection. Comprehensive protection features such as protection from failure of a lamp to strike,filament failures, as well as an automatic restart function, have been included in the design. The IR2156 is available in both 14 lead PDIP and 14 lead SOIC packages. Figure 1 is a block diagram of its internal. Figure 1.1 Block diagram of the internal IR2156 IR2156 the main features are as follows: ? Ballast control and half-bridge driver in one IC ? Programmable preheat frequency, preheat time, over-current threshold, run frequency and dead time. ? DC bus under-voltage reset ? Shutdown pin with hysteresis ? Internal 15.6V zener clamp diode on on Vcc ? Micropower startup (150μA) ? Latch immunity and ESD protection Table 1.2 Recommended Operating Conditions Symbol Definition Min. Max. Units Vbs High side floating supply voltage VCC-0.7 Vclamp V Vs Steady state high side floating supply offset voltage -1 600 V VCC Supply voltage Vccuv+ Vclamp V ICC Supply current 注2 10 mA CT CT lead capacitance 220 —— pF Isd Shutdown lead current -1 1 mA Ics Current sense lead current -1 1 mA Tj Junction temperature -40 125 ℃ Note 2: Enough current should be supplied into the VCC lead to keep the internal 15.6V zener clamp diode on this lead regulating its voltage, VCLAMP. Functional Description Under-voltage Lock-Out Mode (UVLO) The under-voltage lock-out mode (UVLO) is defined as the state the IC is in when VCC is below the turn-on threshold of the IC. To identify the different modes of the IC, refer to the State Diagram shown on page 6 of this document. The IR2156 undervoltage lock-out is designed

您可能关注的文档

文档评论(0)

ligennv1314 + 关注
实名认证
内容提供者

该用户很懒,什么也没介绍

1亿VIP精品文档

相关文档