TIDT330 june   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Considerations
    3. 1.3 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
      1. 2.1.1 One Low-Side FET , 680-nH Coil , 1.0 VIN – 1.5 VIN
      2. 2.1.2 One Low-Side FET , 680-nH Coil , 2.0 VIN – 3.0 VIN
    2. 2.2 Load Regulation
      1. 2.2.1 One Low-Side FET, 680-nH Coil, 1.0 VIN – 1.5 VIN
      2. 2.2.2 One Low-Side FET, 680-nH Coil, 2.0 VIN – 3.0 VIN
    3. 2.3 Thermal Images
      1. 2.3.1 1.0-V Input Voltage – Full Load 3.0 A
        1. 2.3.1.1 Two Low-Side FETs, 330-nH Coil
        2. 2.3.1.2 One Low-Side FET, 680-nH Coil
      2. 2.3.2 2.0-V Input Voltage, Full Load 3.0 A
        1. 2.3.2.1 Two Low-Side FETs, 330-nH Coil
      3. 2.3.3 3.0-V Input Voltage, Full Load 3.0 A
        1. 2.3.3.1 Two Low-Side FETs, 330-nH Coil
    4. 2.4 Bode Plots
      1. 2.4.1 1.0-V Input Voltage
      2. 2.4.2 2.0-V Input Voltage
      3. 2.4.3 3.0-V Input Voltage
  7. 3Waveforms
    1. 3.1 Switching Q2 FET (Drain to Source)
      1. 3.1.1 1.0-V Input Voltage
      2. 3.1.2 3.0-V Input Voltage
    2. 3.2 Output Voltage Ripple
      1. 3.2.1 1.0-V Input Voltage
      2. 3.2.2 3.0-V Input Voltage
    3. 3.3 Input Voltage Ripple
      1. 3.3.1 1.0-V Input Voltage
      2. 3.3.2 3.0-V Input Voltage
    4. 3.4 Load Transients
      1. 3.4.1 Load Steps of 1.5 A to 3 A
        1. 3.4.1.1 1.0-V Input Voltage
        2. 3.4.1.2 3.0-V Input Voltage
      2. 3.4.2 Load Steps of 0.2 A to 3 A
        1. 3.4.2.1 1.0-V Input Voltage
        2. 3.4.2.2 3.0-V Input Voltage
    5. 3.5 Start-Up Sequence
      1. 3.5.1 1.0-V Input Voltage
      2. 3.5.2 3.0-V Input Voltage
    6. 3.6 Shutdown Sequence
      1. 3.6.1 1.0-V Input Voltage
      2. 3.6.2 3.0-V Input Voltage

2.4 Bode Plots

This section includes a summary of the bode plots in Table 2-1 and Figure 2-9 through Figure 2-11 illustrate the bode plots at various input voltages.

Table 2-1 Summery of the Bode Plots
1.0 VIN 2.0 VIN 3.0 VIN
Bandwidth (Hz) 524 1224 1030
Phase Margin 81.66 88.3 92,8
Slope (20 dB/decade) –0.962 –1.05 –1.03
Gain margin (dB) –15.37 –34 –35.6
Slope (20 dB/decade) –0.468 –6.93 –6.6
Frequency (kHz) 4.4kHz 30.5 30.02
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