Texas Instruments TPS543820EVM, User Manual, Page: 17 / 38

3.6 Input Voltage Ripple
Figure 3-20 through Figure 3-23 show the TPS543820EVM input voltage ripple. The load currents are no load
and 6 A. V
IN
= 12 V. The ripple voltage is measured across C1 for U1 and measured across C13 for U2.
Time (1 µs/div)
VIN AC (10 mV/div)
SW (5 V/div)
Figure 3-20. U1 Input Ripple – No Load
Time (1 µs/div)
VIN AC (50 mV/div)
SW (5 V/div)
Figure 3-21. U1 Input Ripple – 6-A Load
Time (1 µs/div)
VIN AC (10 mV/div)
SW (5 V/div)
Figure 3-22. U2 Input Ripple – No Load
Time (1 µs/div)
VIN AC (50 mV/div)
SW (5 V/div)
Figure 3-23. U2 Input Ripple – 6-A Load
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SLUUCE9A – DECEMBER 2020 – REVISED APRIL 2021
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TPS543820EVM SWIFT™ Step-Down Converter Evaluation Module User's
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