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AN2640 Datasheet(PDF) 23 Page - STMicroelectronics

Part # AN2640
Description  Intelligent multipower digital ballast for fluorescent lamps
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2640 Datasheet(HTML) 23 Page - STMicroelectronics

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AN2640
Recognition technique
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5.1
Code implementation on microcontroller
Figure 23.
Ballast operation sequence flowchart
Start
Oscillator Init
Port Init
Analog Comparator Init
ADC Init
Lite Timer Init
Auto Reload Timer Init
PFC Init
Is the lamp
connected?
Clear previous error information
Yes
No
Enable Interrupts
V
IN Recognize
Lamp Detection
Ballast Control
PFC Control



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