2

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Parameter

Units

Value (IRPLLNR2)

Value (IRPLLNR2U)

Lamp Type

36W T8

32W T8

Input Power

[W]

36

32

Input Current

[Arms]

0.300

0.300

Preheat Mode Frequency

[kHz]

44

44

Preheat Mode Lamp Voltage

[Vrms]

220

220

Preheat Time

[s]

0.9

0.6

Ignition Ramp Mode Frequency

[kHz]

38

38

Run Mode Frequency

[kHz]

42

42

Lamp Run Current

[Arms]

0.34

0.34

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]

600

600

Electrical Characteristics

Note: Measurements performed with input AC line voltage = 120Vrms (IRPLDIM1U)

230Vrms (IRPLDIM1)

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

Functional Description

Overview

he IRPLDIM1 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 pro-

vides the necessary circuitry to perform closed-loop dimming, lamp fault detection, shutdown and

auto-restart. All functional descriptions refer to the IRPLDIM1 schematic diagram.