TIDT289 July   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Considerations
    3. 1.3 Dimensions
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Load Regulation
      1. 2.2.1 Output Voltage 1 (1.1 V)
      2. 2.2.2 Output Voltage 2 (3.3 V)
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
      1. 2.4.1 Output Voltage 1 (1.1 V at 6 A)
      2. 2.4.2 Output Voltage 2 (3.3 V at 1 A)
  6. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 Output Voltage 1 (1.1 V at 6 A)
        1. 3.1.1.1 Test Point TP3may be TP3 can be linked to the schematic which will be uploaded with the design (Pin SW_B0)
        2. 3.1.1.2 Test Point TP9may be TP9 can be linked to the schematic which will be uploaded with the design (Pin SW_B1)
      2. 3.1.2 Output Voltage 2 (3.3 V at 1 A)
    2. 3.2 Output Voltage Ripple
      1. 3.2.1 VOUT1 (1.1 VD at 6 A) and VOUT2 (3.3 V at 1 A)
      2. 3.2.2 VOUT3 (2.5 V at 0.3 A) and VOUT4 (1.1 V at 0.4 A)
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transients
      1. 3.4.1 Switching Load on Output Voltage 1 (1.1 VD)
        1. 3.4.1.1 Output Voltage 1 (VOUT1)
        2. 3.4.1.2 Cross Talking on VOUT2 (3.3 V)
      2. 3.4.2 Switching Load on Output Voltage 2 (3.3 V)
    5. 3.5 Start-Up Sequence
      1. 3.5.1 Hot Plug-In
      2. 3.5.2 Enable with Switch S1
        1. 3.5.2.1 All Traces
        2. 3.5.2.2 Without VOUT1
        3. 3.5.2.3 Without VOUT4
    6. 3.6 Shutdown Sequence
      1. 3.6.1 Hot Plug Off
      2. 3.6.2 Disable With Switch S1
        1. 3.6.2.1 All Traces
        2. 3.6.2.2 Without VOUT1
        3. 3.6.2.3 Without VOUT4

3.4.1.2 Cross Talking on VOUT2 (3.3 V)

GUID-20220609-SS0I-JMZT-M8DG-S0KZCB2WN3GJ-low.jpg

Ch1

VOUT2 (3.3 V at 1 A)

20 mV / div



Ch2


IOUT1


2 A / div




1 ms / div


20-MHz
                                    bandwidth








Figure 3-9 Load Transient
                        VOUT1 ⇒ Cross Talking VOUT2 





















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