Texas Instruments TPS54240EVM-VSON, User Manual, Page: 10 / 25

Time = 20usec / div
PH = 10 V / div
Vout = 20 mV / div (ac coupled)
Time = 1usec / div
PH = 10 V / div
Vout = 20 mV / div (ac coupled)
Time = 1usec / div
PH = 10 V / div
Vout = 200 mV / div (ac coupled)
Test Setup and Results
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10 SNVU602 – May 2019
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TPS54240EVM-VSON Regulator Evaluation Module
2.6 Input Voltage Ripple
The TPS54240EVM-VSON input voltage ripple in CCM mode is shown in Figure 9 . The output current is
the rated full load of 2.5 A and V
IN
= 12 V. The ripple voltage is measured directly across the input
capacitors. The TPS54240EVM-VSON input voltage ripple in DCM mode is shown in Figure 10 . The
output current is 200 mA. The TPS54240EVM-VSON input voltage ripple in Eco-mode is shown in
Figure 11 . The output current is 20 mA.
Figure 9. TPS54240EVM-VSON Input Voltage Ripple in
CCM mode at 2.5-A I
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Figure 10. TPS54240EVM-VSON Input Voltage Ripple in
DCM Mode at 200 mA I
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Figure 11. TPS54240EVM-VSON Input Voltage Ripple in Eco-mode™ at 20 mA I
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