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AN3032 Datasheet(PDF) 3 Page - STMicroelectronics

Part # AN3032
Description  This application note describes a demonstration board able to drive
PDF  26 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3032 Datasheet(HTML) 3 Page - STMicroelectronics

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AN3032
List of figures
Doc ID 16165 Rev 2
3/26
List of figures
Figure 1.
2 x 58 W T8 ballast demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2.
Electronic lamp ballast capacitor-to-ground configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 3.
Electronic lamp ballast lamp-to-ground configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 4.
Dual lamp ballast series configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 5.
Dual lamp ballast parallel configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 6.
Electrical schematic 2 x 58 W T8 - main wide range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 7.
EOL circuit for first lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8.
L6585DE start-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 9.
One lamp ignition phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 10.
Low-side current in run mode condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 11.
Lamp voltage and current in run mode condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 12.
Run mode, rectifying effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 13.
Ignition phase with a broken lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 14.
Conducted emissions at 110 Vac 50 Hz - line 1 peak detector . . . . . . . . . . . . . . . . . . . . . 17
Figure 15.
Conducted emissions at 110 Vac 50 Hz - line 2 peak detector . . . . . . . . . . . . . . . . . . . . . 18
Figure 16.
Conducted emissions at 230 Vac 50 Hz - line 1 peak detector . . . . . . . . . . . . . . . . . . . . . 18
Figure 17.
Conducted emissions at 230 Vac 50 Hz - line 2 peak detector . . . . . . . . . . . . . . . . . . . . . 18
Figure 18.
Connecting two lamps to the ballast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 19.
Automatic restart circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21



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