TIDT232 September   2021

 

  1. 1Description
  2. 2Device Description
  3. 3Efficiency
  4. 4Start-up
  5. 5Shutdown
  6. 6Output Voltage Ripple
  7. 7EMI Results
  8. 8Test Setup
    1. 8.1 EMI Scans - Single UCC12050, 5 VOUT, 100 mA
    2. 8.2 EMI Scans - 4x UCC12050, 5 VOUT
    3. 8.3 EMI Scans - Conclusion

EMI Scans - Single UCC12050, 5 VOUT, 100 mA

The test results shown in Figure 8-3 and Figure 8-4 demonstrate measured radiated emissions for a single, 5-V, UCC12050 operating at full load where Figure 8-3 shows the result when the receiving antenna is orientated horizontally and Figure 8-4 shows the result when the receiving antenna is orientated vertically.

GUID-20210409-CA0I-QF3Q-LV02-MFTJB5BVTPXG-low.pngFigure 8-3 Horizontal, Ferrite Beads L1, L2, –5.15 dB (920 MHz), 100 % Load (500 mW)
GUID-20210409-CA0I-RK62-Q9RV-ZRDNKP2CVZJ6-low.pngFigure 8-4 Vertical, Ferrite Beads L1, L2, –5.38 dB (930 MHz), 100 % Load (500 mW)