TIDT256A
March 2022 – March 2022
Description
Features
Applications
1
Test Prerequisites
1.1
LM5156-Q1
1.1.1
Loading LM5156-Q1
1.1.2
LM5156-Q1 SEPIC Bode Loop Testing
1.2
Loading UCC14240-Q1
1.3
UCC5870-Q1 and UCC5870-Q1 EVM GUI
1.4
Voltage and Current Requirements
1.5
Required Equipment
1.6
Considerations
1.7
Dimensions
2
Testing and Results
2.1
SEPIC Efficiency Graphs
2.2
SEPIC Efficiency Data
2.3
SEPIC Bode Plots
2.4
Thermal Images
3
Waveforms
3.1
SEPIC Switching
3.2
SEPIC Output Voltage Ripple
3.3
SEPIC Load Transients
3.4
SEPIC Start-Up Sequence
3.5
Isolated Bias Supply Start Up and Shutdown
3.6
Isolated Gate Drive
2.1
SEPIC Efficiency Graphs
The efficiency graphs are shown in the following figures.
Figure 2-1
Efficiency of the PMP22817 SEPIC at 445 kHz
Figure 2-2
Power Loss of the PMP22817 SEPIC at 445 kHz
Figure 2-3
Efficiency of the PMP22817 SEPIC at 2 MHz
Figure 2-4
Power Loss of the PMP22817 SEPIC at 2 MHz