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AN4444 Scheda tecnica(PDF) 27 Page - STMicroelectronics

Il numero della parte AN4444
Spiegazioni elettronici  ST7590 PRIME compliant power line networking SoC design guide
PDF  68 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4444 Scheda tecnica(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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