SLVAFX6 February 2026 TPS61287
2.3 Ripple Waveform
The waveforms of output AC ripples are shown in this section. Figure 2-10 and Figure 2-11 shows the output ripple waveforms with different input voltage with synchronization functions. The output voltage ripple is within 200mV.
Figure 2-12 to Figure 2-15 show the output ripple AC ripples of two TPS61287 devices in parallel without using the synchronization function. The switching moments of the two devices cannot be simultaneous, causing the peak-to-peak values of the inductor current to overlap, which increases the output voltage ripple and beating frequency. The output voltage ripple reaches 400mV.
| VIN = 3.3V | VOUT = 18V | IOUT = 6A |
Figure 2-12 Output Voltage Ripple and Inductor Current without Synchronization
Function
Figure 2-14 Output Voltage Ripple and Inductor Current without Synchronization
Function
Figure 2-11 Output Voltage Ripple and Inductor Current with Synchronization
Function
Figure 2-13 Output Voltage Ripple and Inductor Current without Synchronization Function
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Figure 2-15 Output Voltage Ripple and Inductor Current without Synchronization Function
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