Other Parts Discussed in Thread: TPS62135,
Hello,
I am working with a customer as they evaluate the TPS62130EVM-505. This board has all it's original components populated and the user guide states it should function from Vin=3.7V-17V at loads up to 3A.
- When operating at Vin=12V Iout=2A, we see a clear periodic switch node (Figure 1).
- When operating at Vin=4.75V Iout=2A, we see a messy switch node with jitter (Figure 2).
- The transition between a messy to clean switch node happens at around 11V.
- We do not see the problem when setting frequency to 2.5MHz, only at 1.25MHz.
Are there any troubleshooting steps you can recommend? Let me know if you need additional data.
Figure 1:
Figure 2:
