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QPI-12 Data Sheet Rev. 1.8 Page 3 of 4

EMI Performance

Figure 4 – Total conducted noise of P048K048T24IF & V048K120T025 with QPI-12 connected as shown in Figure 2.

Output load = 170W: Cy1= Cy2= 4.7 nF & CBUS = 47 µF electrolytic in parallel with 2.2 µF ceramic.

Figure 5 –Total conducted noise of BCM (B048A120T20) with QPI-12.

Output load = 144 W. Same setup as in Figure 2, with the BCM replacing the VTM/PRM pair.

Figure 6 – Current vs. PCB temperature derating curve.

Figure 7 – Typical QPI-12L polygon layout.

When laying out the QPI-12L, care must be taken such that the input and output signal polygons do not overlap each other on lower layers.