摘要
IR21592/IR21593是IR公司于2004年推出的一款新型可调光电子镇流器控制驱动器IC。该芯片集成了全调光镇流器控制器和600V半桥驱动器,可实现无变压器灯功率感知相位控制,简化了从不可调光到可调光镇流器需做的改动。外部可控参数包括:预热时间和电流,点燃到调光时间,和全调光接口等,这给予镇流器设计工程师以很大的灵活性。该IC包括灯点燃失败保护、灯丝失效保护、过温保护、灯在正常工作过程中熄灭的保护以及自动重启功能。该控制IC的核心压控振荡器可以由外部元件设定其最低工作频率。IR21592/IR21593有DIP16和SOIC16两种封装形式。IR21592同IR21593两种型号主要区别在死区时间和频率范围的数值上。
The IR21592/IR21593 are complete dimming ballast controllers and 600 V half-bridge drivers all in one IC. The architecture includes phase control for lamp power sensing without transformer and simplifies regulation which minimizes changes needed to adapt non-dimming ballasts for dimming. Externally programmable features such as preheat time and current, ignition-to-dim time, and a complete dimming interface with minimum and maximum settings provide a high degree of flexibility for the ballast design engineer. Protection from failure of a lamp-striking, filament failure, thermal overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design. The heart of this control IC is a voltage-controlled oscillator with externally programmable minimum frequency. The IR21592/IR21593 are available in both 16 pin DIP and 16 pin narrow body SOIC packages.
出处
《电子器件》
EI
CAS
2005年第4期751-755,共5页
Chinese Journal of Electron Devices
