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AN4346 bảng dữ liệu(PDF) 13 Page - STMicroelectronics

tên linh kiện AN4346
Giải thích chi tiết về linh kiện  10 W wide range - high power factor - isolated LED driver using HVLED815PF
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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AN4346 bảng dữ liệu(HTML) 13 Page - STMicroelectronics

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AN4346
Measurement results
33
2.4
Total harmonic distortion (THD) at nominal load
In Figure 8 is displayed the total harmonic distortion (THD) versus line voltage.
Figure 8. Total harmonic distortion (THD) versus line voltage
The THD at nominal input voltage is lower than 20%.
2.5
Driver efficiency at different LED load number
In Figure 9 is displayed LED driver efficiency versus AC line voltage at different numbers of
LEDs applied.
Figure 9. LED driver efficiency versus AC line voltage at different numbers of LEDs
applied
As shown in Figure 9 LED driver efficiency is always over 80% in all the input voltage range
also varying the number of LEDs.



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