TIDT205 February   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Considerations
    3. 2.3 Dimensions
  3. 3Testing and Results
    1. 3.1 Efficiency Graphs
    2. 3.2 Efficiency Data
    3. 3.3 Load Regulation
    4. 3.4 Thermal Image
    5. 3.5 Bode Plots
    6. 3.6 Conducted Emissions Testing (CISPR 25, Class 5)
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Load Transients
    4. 4.4 Start-up Sequence
    5. 4.5 Termination Sequence

3.1 Efficiency Graphs

GUID-20210208-CA0I-T6TC-TRJF-HQVHTF9F0LSQ-low.jpg Figure 3-1 Efficiency vs IOUT (5-V Output).

Efficiency was taken with the converter operating with 13.5-V input, 5-V output. The input supply was connected directly at the input of the converter. All other converters on the board were disabled. Peak efficiency is over 91%.

GUID-20210208-CA0I-6XJQ-DVDG-WRKQHWHPJQM3-low.jpg Figure 3-2 Efficiency vs IOUT (3.3-V Output – DC/DC).

Efficiency was taken with the converter operating with 5-V input, 3.3-V output. The input supply was connected directly at the input of the converter. All other converters on the board were disabled. Peak efficiency is over 90%.

GUID-20210208-CA0I-4KBX-XBMS-HN97BTVJPVDC-low.jpg Figure 3-3 Efficiency vs IOUT (1.8-V Output).

Efficiency was taken with the converter operating with 5-V input, 1.8-V output. The input supply was connected directly at the input of the converter. All other converters on the board were disabled. Peak efficiency is over 89%.

GUID-20210208-CA0I-WKB8-QLZW-KNXSFFJV6ZKC-low.jpg Figure 3-4 Efficiency vs IOUT (1.35-V Output).

Efficiency was taken with the converter operating with 5-V input, 1.35-V output. The input supply was connected directly at the input of the converter. All other converters on the board were disabled. Peak efficiency is over 88%.

GUID-20210208-CA0I-PRNQ-G4LP-WK0VF00FL1VF-low.jpg Figure 3-5 Efficiency vs IOUT (1.175-V Output).

Efficiency was taken with the converter operating with 5-V input, 1.175-V output. The input supply was connected directly at the input of the converter. All other converters on the board were disabled. Peak efficiency is over 86%.