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IR2156 Folha de dados(PDF) 21 Page - International Rectifier

Nome de Peças IR2156
Descrição Electrónicos  BALLAST CONTROL IC
PDF  24 Pages
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Fabricante Electrônico  IRF [International Rectifier]
Página de início  http://www.irf.com
Logo IRF - International Rectifier

IR2156 Folha de dados(HTML) 21 Page - International Rectifier

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IR2156(S)&(PbF)
www.irf.com
21
IGN
CS
I
R
25
.
1
=
Ohms
Ohms
R
CS
61
.
0
625
.
0
0
.
2
3
.
1
⇒
=
=
Results
A fully-functional ballast was designed, built and
tested using the calculated values. The values
were then adjusted slightly in order to fulfill various
ballast parameters (Table 1). The ballast was
designed using the 'Typical Application Schematic'
given on page 1.
Parameter
Description
Value
fph
Preheat Frequency
68kHz
Vph
Lamp Preheat Voltage
460Vpp
tph
Preheat Time
700ms
Rw:Rc
Filament Preheat Ratio
4:1
Vign
Maximum Ignition Voltage
1500Vpp
tign
Ignition Ramp Time
50ms
frun
Running Frequency
47.5kHz
Vrun
Running Lamp Voltage
180Vpk
Pin
Running Ballast Input
Power
42W
Table 1, 42W-Quad Biax Ballast Measured Results
Waveforms
Waveform 1. Lamp filament voltage during preheat
Waveform 2. Lamp voltage during preheat, ignition
and run modes
Waveform 3, Half-bridge and current sense voltage
during run mode
Waveform 4, Lamp voltage and current sense pin during
a failure-to-strike lamp fault condition.



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