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AN4461 Datasheet(PDF) 5 Page - STMicroelectronics

Part # AN4461
Description  100 W LED street lighting application using STLUX385A
PDF  70 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4461 Datasheet(HTML) 5 Page - STMicroelectronics

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DocID026130 Rev 2
5/70
AN4461
List of figures
70
List of figures
Figure 1.
PSR-ZVS block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2.
STLUX385A PSR-ZVS demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
STLUX385A PSR-ZVS board connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4.
PFC concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5.
PFC input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6.
PFC logical implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7.
PFC - ZCD sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8.
ZVS concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9.
ZVS -
Λ vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10.
ZVS output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11.
Half-bridge logical implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 12.
PSR-ZVS demonstration board schematic - STLUX385A - top . . . . . . . . . . . . . . . . . . . . . 26
Figure 13.
PSR-ZVS demonstration board schematic - PFC and DC/DC zone. . . . . . . . . . . . . . . . . . 27
Figure 14.
PSR-ZVS demonstration board schematic - PSR-ZVS stage. . . . . . . . . . . . . . . . . . . . . . . 28
Figure 15.
PSR-ZVS demonstration board schematic - digital dimming stage . . . . . . . . . . . . . . . . . . 29
Figure 16.
PSR-ZVS demonstration board schematic - THD optimizer . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 17.
PSR-ZVS demonstration board schematic - DALI and 0 - 10 interfaces . . . . . . . . . . . . . . 31
Figure 18.
PSR-ZVS demonstration board schematic - serial interfaces. . . . . . . . . . . . . . . . . . . . . . . 32
Figure 19.
Power-up message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 20.
Command list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 21.
Output current precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 22.
Output current ramp-up and down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 23.
Demonstration board efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 24.
Standby power vs AC input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 25.
Demonstration board - power factor vs. output power at different Vin . . . . . . . . . . . . . . . . 65
Figure 26.
Demonstration board - THD distortion vs. output power at different Vin. . . . . . . . . . . . . . . 65
Figure 27.
PFC startup at 110 Vac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 28.
PFC startup at 220 Vac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 29.
Program.bat screenshot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 30.
Power-up message after a firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Figure 31.
Power-up message of a fully enabled board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68



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