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QPI-10LZ Datasheet(PDF) 3 Page - Vicor Corporation |
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QPI-10LZ Datasheet(HTML) 3 Page - Vicor Corporation |
3 / 8 page Picor Corporation • www.picorpower.com QPI-10 Data Sheet Rev. 1.4 Page 3 of 8 Applications Information The QPI-10 is an EMI filter especially designed for V•I Chip products, providing conducted common-mode and differential-mode attenuation from 150 kHz to 30 MHz. Designed for the telecom and ITE bus range, the QPI supports the PICMG ® 3.0 specification for filtering system boards using Vicor’s V•I Chip technology to the EN55022 Class B limit. The resulting plot in Figure 4 shows the QPI-10 is effective in reducing the V•I Chip total noise spectrum to well below the EN55022 Class B Quasi-peak detection limit. The plot in Figure 4 was taken using the standard 50 / 50 µH LISN and measurement conditions, with the Peak detection mode of the spectrum analyzer, for a conducted EMI test. The results are compared to the CISPR22 EN55022 Class B Quasi-peak detection limit showing the total noise spectrum for V•I Chip combination using a P048K048T24 and V048K120T025 with a QPI-10 connected, as shown in Figure 3. Figure 3 – Standard LISN test setup, 170 W load. Figure 4 – Conducted EMI profile of V•I Chip with QPI-10. |
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