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AN4026 Datasheet(PDF) 2 Page - STMicroelectronics

Part # AN4026
Description  using the L6563H and L6699
Download  40 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4026 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
AN4026
2/40
Doc ID 022603 Rev 1
Contents
1
Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 6
1.1
Startup sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2
Brownout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3
Fast voltage feed-forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4
Resonant power stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5
Output voltage feedback loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6
L6699 overload and short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . 8
1.7
Overvoltage and open loop protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.8
Light load operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1
Light load operation efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3
Harmonic content measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4
Functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1
Burst mode operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3
Overcurrent and short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4
Anti-capacitive mode protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5
Thermal map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6
Conducted emission pre-compliance test . . . . . . . . . . . . . . . . . . . . . . 27
7
Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8
PFC coil specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1
General description and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.3
Electrical diagram and winding characteristics . . . . . . . . . . . . . . . . . . . . . 35
8.4
Mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . 36


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