调光电子镇流器控制器IRS2530及其应用

IRS2530是美国国际整流器（IR）公司最近推出的一种调光镇流器控制器和半桥驱动器单片IC,它主要是为驱动30W以下紧凑型荧光灯（CFL）而设计的。与IR公司前几年的产品IR2520比较,IRS2530在性能上有较大提升,并增加了闭环灯电流调光功能。     

电子镇流器控制器KA7522／D及其应用

本文简要介绍了电子镇流器控制器ＫＡ７５２２／Ｄ的主要功能及特点，重点阐述了其应用电路。     

KA7526功率因数校正控制器及其应用

KA7526是FairchildSemicondu-ctor公司生产的一种简单高效的功率因数校正控制器。利用它可以设计出最优化的低功耗、高功率密度的电子镇流器,而且占用线路板的空间很小。由于KA7526内含RC滤波器,因此,用它设计电子镇流器不需要外部RC滤波器。KA7526中的误差放大器和乘法器的内部门限可在电路出现过载时打开输出以进行限流操作,同时也可以防止负载断开。由于这种输出驱动限制电路限制了功率MOSFET门驱动电路在电源电压中点处的过载,因而极大地提高了整个系统的可靠性。图1统的可靠性。主要特点KA7526型PFC控制器的主要特点如下:(1)…     

基于KA7526功率因数校正控制的电子镇流器设计

文中给出了一种采用高效功率因数校正控制器KA7526设计的低功耗、高功率密度的电子镇流器的新型电路 ,并给出了电路中各元器件的具体参数 ,同时介绍了KA7526控制器的主要特点、引出端功能和内部结构     

CFL可调光电子镇流器控制器ML4836

紧凑型(小型)荧光灯(Compact Fluorecent Lamp,缩写为CFL),是目前家庭照明的主要电光源。迄今为止,CFL电子镇流器控制器专用IC只有L6567和ML4835/ML4836等几种。其中,ML4836是美国Micro Linear公司于2000年7月发布的新产     

荧光灯调光镇流器PSoC及其应用

赛普拉斯微系统公司推出的PSoC混合信号阵列。是带有嵌入式微控制器并具有数字可寻址照明接口(DALI)通信能力的单片电子调光镇流器控制器。文中介绍了PSoC的基本结构和关键特性，并给出了应用方案。     

UBA2028可调光节能灯控制器原理与应用

<正> UBA2028是恩智浦半导体推出的紧凑型荧光灯电子镇流器控制与驱动高压功率IC。这种新型芯片集成了与UBA2014相同的CFL电子镇流器控制电路和半桥MOSFET栅极驱动器及两个半桥功率MOSFET(即UBA2014+半桥功率MOSFET二合一IC)。U-BA2028为CFL提供预热、引燃和调光等控制功能,并为系统提供保护功能,为目前设计5～25W的可调光CFL电子     

电子镇流器控制器IC及其应用

绿色照明产业在世界范围内的蓬勃兴起,为半导体制造商提供了一个巨大的商机。西门子公司、摩托罗拉公司、国际整流器公司、意法半导体公司和三星公司等世界著名的半导体巨商,对于电子镇流器用功率开关晶体管和控制器IC的研究开发与市场,都积极参与了竞争。 自进入20世纪80年代中期以来,电子镇流器控制器IC得到长足的发展,目前已有数大类近百个品种。此类控制器IC的代表性产品,在国内的一些中心城市都有经销机构。荧光灯及高强度放电(HID)灯用电子镇流器,只要采用了控制器IC,     

可对高压气体光源调光的电子镇流器

介绍一种造价纸，性能可靠，采用开关电源技术，可对高压气体光源调光的节能电子镇流器。     

可调光电子镇流器控制芯片IR2159及其应用

IR2 15 9是可调光荧光灯电子镇流器控制芯片 ,它集镇流控制器与 6 0 0V半桥驱动器于一体。可根据需要调整预热时间、预热电流、从触发到调光的过程时间、最小和最大的发光功率。具有模拟量调光输入接口、完善的故障自保护功能。文章介绍了IR2 15 9典型应用和预热、触发、调光、自我保护等基本工作原理。     

PFC镇流控制器IR2167及其应用

UR2167是在同一芯片上包含PFC、镇流控制器和半桥驱动器的电路。预热时间与频率、点火及运行频率可编程的特征,为镇流器设计工程师提供了高度灵活性。像低AC线路情况、灯点火失败、热过载或在工作时灯失效这一类保护及自动再启动功能,已包含在设计中。     

新型专利电子镇流器控制器BL8301及其应用

上海贝岭生产的专利电子镇流器控制器BL8301可为电子镇流器半桥LC谐振逆变器提供所有必需的控制和保护功能,可用于设计80W以下中高端荧光灯交流电子镇流器。文中介绍了BL8301的基本结构特点和功能原理,给出了BL8301的应用电路。     

简单可靠的两片式电子镇流器设计

FAN7527和KA7541分别是FairchildSemiconductor公司生产的高效低功耗PFC控制器和电子镇流器控制器。文中介绍了它们的主要特点和引脚功能 ,给出了用FAN7527进行功率因数校正 ,并选用KA7541作为荧光灯电子镇流器控制器设计的、简单、可靠且成本低廉的新型电子镇流器的电路设计方案     

Electronic Ballast Control IC With Digital Phase Control and Lamp Current Regulation

A digital control architecture is presented for electronic ballasts that provides a phase sweep for reliable, soft lamp ignition and a smooth transition to lamp current regulation mode. The controller is based on an inner phase loop for fast regulation of the resonant tank operating point and an outer current loop for lamp current regulation. The inner loop operates on a simple digital control law that computes the required gate timing relative to the inductor current positive zero crossing. Phase control provides reliable drive of the resonant converter in the presence of large dynamic changes in the load impedance during lamp ignition and warm up and natural tracking of component variations with temperature and time. The primarily digital approach provides programmability for broad application, insensitivity to process and temperature variations, realization in low cost CMOS processes and few external components. Experimental results are presented for an integrated ballast controller fabricated in a 0.8 mum CMOS process used in a 400 W, 150 kHz HID electronic ballast.     

直流电机控制器MC33033及其应用电路

ＭＣ３３０３３是ＭＯＴＯＲＯＬＡ公司生产的高单片直流无刷电机控制器,具有开环、三相或四相电机控制器所需要的所有功能。可以对直流电机速度进行开环和闭环控制,亦可对三相电机进行换向控制。本文介绍了ＭＣ３３０３３的主要特点和工作原理,并给出了几种应用电路。     

Implementation of a Voltage Multiplier Integrated HID Ballast Circuit With Dimming Control for Automotive Application

High-intensity discharge (HID) lamps are becoming popular substitutes for halogen lamps in automotive headlamps because of the high lumen/watt ratio and the color of the light. In this paper, a ballast (integrated with a voltage multiplier circuit in the secondary winding of the dc converter transformer) with dimming control is presented. The proposed circuit not only eliminates one auxiliary winding but also reduces the voltage across the switch on the primary side and consequently permits the selection of switches with a lower rating. A brief review of the HID circuits is done and compared with the proposed circuit. Experimental results from the prototype are presented. This paper also presents different methods of dimming the automotive HID lamps based on analog and digital control and discusses the relative merits of each of the methods. The dimming control is implemented using both the methods, and experimental results are presented. It is envisaged that the dimming control will provide some flexibility to drivers in the control of HID lamps to suit the driving conditions in the modern cities that are very well lit at night. This paper investigates the merits of each method and discusses the practical issues for implementing such controls.      

Digital-Dimming Controller With Current Spikes Elimination Technique for LCD Backlight Electronic Ballast

A novel simple control strategy to improve the ignition behavior of a cold cathode fluorescent lamp (CCFL) in digital-dimming mode is proposed in this paper. Due to restriking manipulation in the digital-dimming mode, the lamp life of CCFL is reduced substantially. For extending the lamp life, a digital-dimming controller with current spikes elimination technique is realized to reduce the high ignition voltage and eliminate the ignition current spike. The half-bridge resonant inverter is employed in the presented backlight system to assess the system performance. Complete analysis and design considerations are discussed in detail in this paper. Experimental results agree with the theoretical prediction. The overall efficiency of the system achieved at the rated power is over 84.9%. The ignition voltage is reduced about 30% without any lamp current spike that occurred under digital-dimming operation     

基于VC-20-MR2和KA7543的紫外语音调制技术

根据VC-20-MR2与KA7543两者的特性,提出了一种较好的日盲紫外光通迅调制模式并获得了成功。