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Parameter Units Value (IRPLDIM1E) Value (IRPLDIM1U)
Lamp Type 36W T8 32W T8
Input Power (100%) [W] 36 32
Input Current (100%) [Arms] 0.16 0.27
Filament Preheat Current [Arms] 0.6 0.6
Preheat Mode Lamp Voltage [Vrms] 220 220
Preheat Time [s] 1.0 1.0
Input AC Voltage Range [VACrms] 185..255/50..60Hz 90..140/50..60Hz
Input DC Voltage Range [VDC] 250..350 100..180
Power Factor 0.98 0.99
Total Harmonic Distortion [%] <15 <10
Maximum Output Voltage [Vpk] 750 750
Electrical Characteristics
Note: Measurements performed with input AC line voltage = 120Vrms (IRPLDIM1U)
230Vrms (IRPLDIM1E)
Fault Ballast Restart Operation
Line voltage low Deactivates Increase line voltage
Upper filament broken Deactivates Lamp exchange
Lower filament broken Deactivates Lamp exchange
Failure to ignite Deactivates Lamp exchange
Open circuit (no lamp) Deactivates Lamp exchange
Fault Protection Characteristics
Fault Protection
Overview
The IRPLDIM1E/U Demo Board consists of an EMI filter, an active power factor correction front end,
a ballast control section and a resonant lamp output stage. The active power factor correction section
is a boost converter operating in critical mode conduction, free-running frequency mode. The ballast
control section provides frequency modulation control of a traditional RCL lamp resonant output
circuit and is easily adaptable to a wide variety of lamp types. The ballast control section also provides
the necessary circuitry to perform closed-loop dimming, lamp fault detection, shutdown and auto-
restart. All functional descriptions refer to the IRPLDIM1E/U schematic diagram.
