TIDT240 October   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Required Equipment
    3. 2.3 Considerations
    4. 2.4 Dimensions
    5. 2.5 Signal Descriptions
  3. 3Testing and Results
    1. 3.1 Efficiency Graphs
    2. 3.2 Efficiency Data
    3. 3.3 Voltage Regulation Graphs
    4. 3.4 Cross-Loading Performance
    5. 3.5 Cross-Loading Performance Data
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Load Transients
    4. 4.4 Start-up Sequence

4.2 Output Voltage Ripple

Output voltage ripple measurements use the proper ripple-measurement technique that minimizes the voltage probe grounding loop. The oscilloscope uses the 20-MHz bandwidth limit.

In Figure 4-3, the SN6505-Q1 is not assembled. Figure 4-4 shows the output ripple VOUT1 with 165-Ω resistive load. Figure 4-5 shows the output ripple VOUT1 with 330-Ω resistive load.

GUID-20210722-CA0I-8DLB-6TMJ-8CCQXQBVPZCH-low.png Figure 4-3 LMR50410-Q1 Output Voltage Ripple in CCM Mode
GUID-20210722-CA0I-WPQZ-XP8F-1VPJWPZQMJR2-low.png Figure 4-4 SN6505-Q1 Output Voltage Ripple
GUID-20210722-CA0I-NJVR-75FK-WX69TDLXT6WN-low.png Figure 4-5 SN6505-Q1 Output Voltage Ripple