TIDT185 January   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 EMI
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Power On and Power Off

2.4 EMI

The conducted emissions are tested to the CISPR 25 class 5 standards. The CISPR 25 class 5 compliance was achieved without a common-mode choke. The waveforms of EMI test results are shown in following images.

Test condition: VIN = 12 V, IO = 3 A

GUID-20220109-SS0I-5SJ8-JFT5-STSWKBB8CTN3-low.png
Green: peak detection result; Purple: average detection result
Red: CISPR 25 Class 5 peak limits; Blue: CISPR 25 Class 5 average limits
Figure 2-4 DC+
GUID-20220109-SS0I-M9VW-GBDR-SKHJXX55QB1S-low.png
Green: peak detection result; Purple: average detection result
Red: CISPR 25 Class 5 peak limits; Blue: CISPR 25 Class 5 average limits
Figure 2-5 DC–