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

3.5 Bode Plots

Bode plots are shown in the following figures.

GUID-20210205-CA0I-HLN3-BRZB-PVGZMCGWXBFG-low.jpg
VIN = 13.5 V, VOUT = 5 V, with a 2.43-A load current.
Phase Margin: 93.037 degrees, Gain Margin: –27.454 dB
Figure 3-12 5-V Rail Bode Plot (VIN = 13.5 V, IOUT = 2.43 A).
GUID-20210205-CA0I-BFDD-8PKC-H4TPGGHBMPHM-low.jpg
VIN = 5 V, VOUT = 3.3 V, with a 0.18-A load current.
Phase Margin: 93.661 degrees, Gain Margin: –28.757 dB
Figure 3-13 3.3-V Rail Bode Plot (VIN = 5 V, IOUT = 0.18 A).
GUID-20210205-CA0I-CQ1S-8NGF-0CVVLNTZ1GVQ-low.jpg
VIN = 5 V, VOUT = 1.8 V, with a 0.28-A load current.
Phase Margin: 94.161 degrees, Gain Margin: 24.116 dB
Figure 3-14 1.8-V Rail Bode Plot (VIN = 5 V, IOUT = 0.28 A).
GUID-20210205-CA0I-Q6BB-LPT5-MZWRWRCL4HNH-low.jpg
VIN = 5 V, VOUT = 1.35 V, with a 0.22-A load current.
Phase Margin: 83.759 degrees, Gain Margin: 21.223 dB
Figure 3-15 1.35-V Rail Bode Plot (VIN = 5 V, IOUT = 0.18 A).
GUID-20210205-CA0I-JMCH-DPJJ-H8FQPVMSPHFH-low.jpg
VIN = 5 V, VOUT = 1.175 V, with a 2-A load current.
Phase Margin: 80.544 degrees, Gain Margin: 24.283 dB
Figure 3-16 1.175-V Rail Bode Plot (VIN = 5 V, IOUT = 2 A).