Picor Corporation · picorpower.com

QPI-6

Rev 2.6, Page 5 of 13

QPI-6

QUIETPOWER

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Attenuation Test Setups:

Figure 6 - Open-frame EMI test setup using the QPI-6-CB1 carrier board with 48V converter.

Figure 7 - Base-plate EMI test setup using the QPI-6-CB1 carrier board with 48V converter.

In Figures 6 and 7, C1 is the required 47uF capacitor (United

Chemi-Con EMVE101ARA470MKE0S or equivalent), C2 is a

converter input cap (value dependant on converter), and CY

caps are 4.7nF ceramic (Murata GRM31BR73A472KW01L or

equivalent).

Attenuation Plots: Converters in base-plate and open-frame configurations, tested as shown in Figure 7.

Figure 8 - V48B12C250BN using base-plate “Y” capacitors

with a 162W load.

Figure 9 – V48B3V3C150BN using base-plate “Y” capacitors

with a 141W load.