一种单片节能灯驱动芯片的保护电路设计

发布时间：2018-07-27 13:58

【摘要】：随着我国经济的不断高速发展,人们现在更加重视节约能源,提倡对“绿色照明”的应用,特别是用各种节能灯替代传统的白炽灯的要求。本文针对一种单片节能灯的驱动芯片设计其保护电路,可适应在民用交流电220V工作环境下的稳定、高功效、低散热。本芯片采用的专门化器件集成模块,可以很好的将各器件隔离,并且尽量缩小设计的体积、工作过程和响应时间。本驱动芯片的保护电路主要是对脉冲触发电路、故障定时器的短路保护、外围电阻温度检测、异常电压电流控制电路、电流采样与比较电路、ESD防静电保护电路的设计,达到对整个芯片的功能模块实现有效的保护。本文对保护电路的每个单元电路进行了电路图的设计,并完成仿真和实验测试。通过与设计参数的对比,本电路的实验测试结果可以达到预期标准,可在保证可靠性的条件下以低功耗、高效率运行。整个驱动电路的紧凑版图设计对于有体积要求的节能灯产品来说有着实际意义。本设计的保护电路,可应用于以发光二极管为功率器件的节能灯驱动芯片,从设计特性分析,也可用于其他低功率节能灯产品,其应用面广泛。设计保护电路部分的实现与测试仿真。本芯片采用的专门化器件集成模块,可以很好的将电磁、光耦隔离的缺点减小,并且有效控制了芯片的体积,缩短响应时间。本设计能够使芯片有较好的封装形式和封装材料,以实现在可靠性的条件下达到低功耗、散热效果好,并降低成本。对本驱动电路的各部分电路,在实验环境下搭建了模拟的应用工作平台,使用实验测试仪器完成了对各项参数的采集和设计对比。通过测试结果分析,本设计的芯片的可以达到要求的功能和工作标准,保证了芯片工作中的散热性、稳定性、好的工作效率,并可适合运用于节能灯产品的生产。对ESD保护电路的半导体材料进行分析选用,并介绍在大规模生产环境下的静电防护工艺。设计出一款适用于发光二极管节能灯的功率驱动芯片保护电路。对设计中用到的各元器件进行定义的引用及功能介绍,着重完成保护电路的实现,并在此平台的基础上完成芯片驱动电路的版图设计。
[Abstract]:With the rapid development of economy in our country, people pay more attention to saving energy and advocate the application of "green lighting", especially the requirement of replacing traditional incandescent lamps with various energy-saving lamps. In this paper, the protection circuit is designed for the drive chip of a single-chip energy-saving lamp, which can adapt to the stable, high efficiency and low heat dissipation in the civil AC 220V working environment. The specialized device integration module used in this chip can isolate each device well and reduce the design volume, working process and response time as much as possible. The protection circuit of the drive chip is mainly designed for pulse trigger circuit, fault timer short circuit protection, peripheral resistance temperature detection, abnormal voltage and current control circuit, current sampling and comparison circuit and ESD anti-static protection circuit. To achieve the entire chip functional modules to achieve effective protection. In this paper, the circuit diagram of each unit circuit of the protection circuit is designed, and the simulation and experimental test are completed. By comparing with the design parameters, the experimental results of this circuit can reach the expected standard, and can run with low power consumption and high efficiency under the condition of ensuring reliability. The compact layout design of the whole drive circuit has practical significance for the energy saving lamp with volume requirement. The protection circuit designed in this paper can be used in the drive chip of energy-saving lamp with LED as power device. It can also be used in other low-power energy-saving lamp products from the analysis of design characteristics. Design protection circuit part of the implementation and test simulation. The integrated module of specialized devices used in this chip can reduce the disadvantages of electromagnetic and optical coupling isolation, and effectively control the size of the chip and shorten the response time. This design can make the chip have better packaging form and packaging material to achieve low power consumption under the condition of reliability, good heat dissipation effect, and reduce the cost. For each part of the drive circuit, a simulated working platform is set up in the experimental environment, and the collection and design of the parameters are completed by using the experimental test instrument. Through the analysis of the test results, the designed chip can meet the required function and work standard, which ensures the heat dissipation, stability, good working efficiency in the chip work, and can be used in the production of energy-saving lamp products. The semiconductor material of ESD protection circuit is analyzed and selected, and the electrostatic protection technology in mass production environment is introduced. A protection circuit of power drive chip is designed for LED energy saving lamp. The definition and function of the components used in the design are introduced, and the realization of the protection circuit is emphasized, and the layout design of the chip driving circuit is completed on the basis of the platform.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN402;TM923.5

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