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AN4444 데이터시트(PDF) 27 Page - STMicroelectronics

부품명 AN4444
상세설명  ST7590 PRIME compliant power line networking SoC design guide
PDF  68 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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AN4444 데이터시트(HTML) 27 Page - STMicroelectronics

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AN4444
ST7590 reference design description
68
Figure 14 shows the frequency response of the line driver circuit, while Figure 15 reports the
Montecarlo simulation.
Figure 14. Measured frequency response of the line driver (typical)
Figure 15. Montecarlo simulation of the line driver frequency response
8.1.2
Power line coupling
The coupling to the power line requires some passive components in addition to the active
filtering stage. In particular, it includes the DC decoupling capacitor C2, the line transformer
T1, the power inductor L1 and the X1 safety capacitor C5.
L1 has been accurately chosen to have high saturation current (> 2 A) and very low
equivalents series resistance (< 0.1
), to limit distortion and insertion losses even with
heavy line load.



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