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AN4163 Datasheet(PDF) 2 Page - STMicroelectronics

Part # AN4163
Description  This application note describes the demonstration board EVL4984-350W
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4163 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
AN4163
2/33
DocID023658 Rev 2
Contents
1
Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 5
2
Test results and significant waveforms . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
Harmonic content measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2
Inductor current in FOT and L4984D THD optimizer . . . . . . . . . . . . . . . . .11
2.3
Switching frequency and TIMER pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4
Voltage feed-forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.6
Overvoltage and open-loop protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.7
Power management/housekeeping functions . . . . . . . . . . . . . . . . . . . . . 21
3
Thermal measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4
Conducted emission pre-compliance test-peak detection . . . . . . . . . 25
5
Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6
PFC coil specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1
General description and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.3
Mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.4
Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32



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