DIMMING BALLAST CONTROL IC
Data Sheet No. PD60194_A
IR21592(S) IR21593(S)
Features
DIMMING BALLAST CONTROL IC
• Full lamp fault protection • Brow...
Description
Data Sheet No. PD60194_A
IR21592(S) IR21593(S)
Features
DIMMING BALLAST CONTROL IC
Full lamp fault protection Brown-out protection Automatic restart Micro-power startup Zener clamped Vcc Over-temperature protection 16-pin DIP and SOIC package types
Parameter Deadtime Frequency Range IR21592 1.8us See Graph 11 IR21593 1.0us See Graph 12
Ballast control and half-bridge driver in one IC Transformer-less lamp power sensing Closed-loop lamp power control Closed-loop preheat current control Programmable preheat time Programmable preheat current Lamp ignition detection Programmable ignition-to-dim time 0.5 to 5VDC dimming control input Min and max lamp power adjustments Programmable minimum frequency Internal current sense blanking
Description
Description: The IR21592/IR21593 are complete dimming ballast controllers and 600V half-bridge drivers all in one IC. The architecture includes phase control for transformer-less lamp power sensing and 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 to strike, filament failures, thermal overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design....
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