Texas Instruments TPS54614EVM 1.8-V SWIFT, Руководство пользователя, Страница: 21 / 33

Output Voltage Regulation
2-9 Setup and Test Results
2.8 Input Voltage Ripple
The input voltage ripple for a 6-A load is shown in Figure 2–13 for a 3.3-V input
and in Figure 2–14 for a 5.0-V input. With a 5.0-V input, the ripple is
approximately 260 mVpp. The input voltage ripple can be made lower by
adding capacitance to the input.
Figure 2–13. Measured Input Voltage Ripple With 3.3-V Input
VI (AC)
100 mV/div
VI = 3.3 V
IO = 6 A
400 ns/div
Figure 2–14. Measured Input Voltage Ripple With 5.0-V Input
VI (AC)
100 mV/div
VI = 5 V
IO = 6 A
400 ns/div