TIDT225 March   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Required Equipment
  3. 3Testing and Results
    1. 3.1 Thermal Images
    2. 3.2 Efficiency and Power Dissipation Graphs
    3. 3.3 Efficiency and Power Dissipation Data
    4. 3.4 Cross Regulation
    5. 3.5 Loop Gain
  4. 4Waveforms
    1. 4.1 Start-up
    2. 4.2 Switching Waveforms
    3. 4.3 Output Voltage Ripple
    4. 4.4 Load Transients

Switching Waveforms

Switching behavior is shown in the following figures.

GUID-20210219-CA0I-HWJL-NPCH-JZMTRFH2KWCZ-low.jpg Figure 4-5 FET Switch Node Voltage at TP3 With Vin = 7 V and Maximum Loads
GUID-20210219-CA0I-D05S-52DF-RXWWDD24NR22-low.jpg Figure 4-6 FET Switch Node Voltage at TP3 With Vin = 12 V and Maximum Loads
GUID-20210219-CA0I-VFBB-B7QJ-BBC2PQHWTRJQ-low.jpg Figure 4-7 FET Switch Node Voltage at TP3 With Vin = 32 V and Maximum Loads
GUID-20210219-CA0I-D3JW-NT2Q-QFGMLN1JCMSD-low.jpg Figure 4-8 FET Switch Node Voltage at TP3 With Vin = 7 V and no Loads
GUID-20210219-CA0I-LMDX-BXBS-13LJGKM0FQVL-low.jpg Figure 4-9 FET Switch Node Voltage at TP3 With Vin = 12 V and no Loads
GUID-20210219-CA0I-GFMC-SBCF-SCC87Q9C1G7X-low.jpg Figure 4-10 FET Switch Node Voltage at TP3 With Vin = 27 V and no Loads
GUID-20210219-CA0I-SVMZ-740B-L2JNF0ND6ZVF-low.jpg Figure 4-11 FET Switch Node Voltage at TP3 With Vin = 32 V and no Loads (Note Pulse Skipping)