IRPLLNR4 International Rectifier, IRPLLNR4 Datasheet - Page 13

• Manufacturer Part Number: IRPLLNR4
• Description: BALLAST UNIV INP FLUOR IR2166
• Manufacturer: International Rectifier

Specifications of IRPLLNR4

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRPLLNR4

Run Mode
During the Run mode the frequency is shifted to the run frequency. The run frequency is determined
only by RT. The 1-3V window comparator in the SD pin is enabled at the beginning of the Run mode.
The full explanation of the functionality of the under-current sensing and end-of-life sensing is in the
section on Fault Mode.
The Run mode frequency is that at which the lamp is driven to the lamp manufacturer’s recom-
mended lamp power rating. The running frequency of the lamp resonant output stage for selected
component values is defined as,
where,
www.irf.com
f
run
2
1
V
L
C
P
LC
Lamp
Lamp
1
2
= Lamp resonant circuit inductor (L3)
= Lamp resonant circuit capacitor (C14)
= Lamp running power
= Lamp running voltage amplitude
CV
P
Lamp
2
Lamp
2
LC
1
RD-0602
2
CV
P
Lamp
2
Lamp
2
2
4
1
(H)
(F)
(W)
(V)
L C
V
2
2
V
Lamp
DCbus
2
2
13