基于NCL30000的高效LED驅(qū)動方案及TRIAC調(diào)光設(shè)計
時間:2010年08月09日 - 2010年11月09日本演講介紹安森美半導體NCL30000單段式高功率因數(shù)LED照明驅(qū)動設(shè)計方案,22W負載通用主電源輸入時,功率因數(shù)大于0.96,能效大于87%。以及基于NCL30000的TRIAC調(diào)光方案,調(diào)光最低小于2%。...
單段式高功率因數(shù)LED驅(qū)動器原理及TRIAC調(diào)光方案演講PPT
符合“能源之星”固態(tài)照明要求的離線高功率因數(shù)TRIAC調(diào)光LED驅(qū)動器參考設(shè)計
離線高功率因數(shù)TRIAC調(diào)光LED驅(qū)動器GreenPoint?參考設(shè)計(英文版)
NCL30000單段CrM反激LED驅(qū)動器電源段設(shè)計指引
Single stage critical conduction mode (CrM) flyback converters require different design considerations compared to fixed frequency or quasi?resonant (QR) flyback converters. Information is presented in this application note on establishing design parameters for the power stage of an LED driver. This includes the design of the transformer, power component selections, and EMI filter design as well as the startup and biasing circuitry of the NCL30000 LED driver controller. To illustrate the design process, an example power supply will be used.
NCL30000數(shù)據(jù)手冊
The NCL30000 is a switch mode power supply controller intended for low to medium power single stage power factor (PF) corrected LED Drivers. The device is designed to operate in critical conduction mode (CrM) and is suitable for flyback as well as buck topologies. Constant on time CrM operation is particularly suited for isolated flyback LED applications as the control scheme is straightforward and very high efficiency can be achieved even at low power levels. These are important in LED lighting to comply with regulatory requirements and meet overall system luminous efficacy requirements.
配置NCL30000用于TRIAC調(diào)光
As LED lighting starts to enter the mainstream of general lighting it is important to be compatible with the existing line dimming infrastructure. This has been one of the limitations of wider acceptance of CFL bulbs as many applications require dimming and the user expectation of the dimming control range is that it is comparable to the incandescent lamps which are being replaced. There are two main types of phase cut dimmers ? leading edge (triac based) or trailing edge (transistor based).
NCL30000評估板手冊
The NCL30000 is a power factor corrected LED driver controller. This evaluation board manual describes the setup and operation of the NCL30000LED2GEVB LED driver for 230 V input. The evaluation board implements an isolated single stage Critical conduction Mode (CrM) flyback converter providing a regulated constant current to an LED load. This board has been specifically configured to support leading and trailing edge line dimming and has been characterized across a range of commercially available dimmers.