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AN2485 Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte AN2485
Spiegazioni elettronici  400 W FOT-controlled PFC pre-regulator with the L6563
PDF  29 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2485 Scheda tecnica(HTML) 2 Page - STMicroelectronics

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Contents
AN2485
2/29
Contents
1
Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 4
2
Test results and significant waveforms . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Harmonic content measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
Inductor current in FOT and L6563 THD optimizer . . . . . . . . . . . . . . . . . 10
2.3
Voltage feedforward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4
Start-up and RUN pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5
Start-up at light load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6
Open loop protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7
Power management/housekeeping functions . . . . . . . . . . . . . . . . . . . . . . 17
3
Layout hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4
Audible noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5
Thermal measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6
Conducted emission pre-compliance test . . . . . . . . . . . . . . . . . . . . . . 22
7
Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8
PFC coil specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.1
General description and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.3
Mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28



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