IR IRS2530D三级调光CFL镇流器方案
IRS2530D takes full advantage of IR’s patented ballast and high-voltage technologies to realize a simple, high-performance dimming ballast solution. A single high-voltage pin senses the half-bridge current and voltage to perform necessary ballast protection functions. The DC dim input voltage reference and the AC lamp current feedback have been coupled together allowing a single pin to be used for dimming. Combining these high-voltage control algorithms together with a simple dimming method in a single 8-pin IC results in a large reduction in component count, an increase in manufacturability and reliability, a reduced design cycle time, while maintaining high dimming ballast system performance
IRS2530D主要特性:
Dimming ballast control plus half-bridge driver
Closed-loop lamp current dimming control
Internal non-ZVS protection
Internal crest factor protection
Programmable preheat time
Fixed dead-time (2.0μs typ.)
Lamp insert auto-restart
Internal bootstrap MOSFET ..
