TIDT290 August   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
    5. 3.5 Shutdown Sequence
    6. 3.6 Input Voltage Ripple

3.4 Start-Up Sequence

Start-up behavior is shown in the following figures.

GUID-20220524-SS0I-PTPL-0JN1-JL76SLDLVVJV-low.jpg

Input voltage = 85 VAC

Output 1 = 12 V at 2.2 A

Output 2 = 3.3 V at 1.5 A

Figure 3-7 85-VAC Input, Full Load Start-Up
GUID-20220524-SS0I-1N21-8GBK-55LRTRKRN2GN-low.jpg

Input voltage = 265 VAC

Output 1 = 12 V at 2.2 A

Output 2 = 3.3 V at 1.5 A

Figure 3-8 265-VAC Input, Full Load Start-Up
GUID-20220524-SS0I-J8CW-PXGW-33LDKD78NDDQ-low.jpg

Input voltage = 85 VAC

Output 1 = 12 V at 0 A

Output 2 = 3.3 V at 0 A

Figure 3-9 85-VAC Input, No Load Start-Up
GUID-20220524-SS0I-QFVQ-SKN2-K2PKP8BP5L6T-low.jpg

Input voltage = 265 VAC

Output 1 = 12 V at 0 A

Output 2 = 3.3 V at 0 A

Figure 3-10 265-VAC Input, No Load Start-Up