2

www.irf.com

IRPLLNR3

Parameter

Units

Value

Lamp Type

35W TL5

Input Power

[W]

35

Lamp running voltage

[Vpp]

750

Run Mode Frequency

[kHz]

42

Preheat Mode Frequency

[kHz]

56

Preheat Time

[s]

1

Lamp Preheat Voltage

[Vpp]

400Vpp

Ignition Ramp Mode Frequency

[kHz]

36

Ignition Voltage

[Vpp]

2000

Input AC Voltage Range

[VACrms]

80-260VAC

Power Factor

0.99 at 120VAC

Total Harmonic Distortion

[%]

10 at 120VAC

Note: Measurements performed with input AC line voltage = 220Vrms

Fault Protection Characteristics

Functional Description

Overview

The IR2167 Demo Board consists of an EMI filter, an active power factor correction section, a ballast

control section and a resonant lamp output stage. The active power factor correction section is a

boost converter operating in critical conduction mode, 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 lamp fault detection, shutdown and auto-restart. All

functional descriptions refer to the IR2167 Demo Board schematic diagram.

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

End of life

Deactivates

Lamp exchange