Other Parts Discussed in Thread: TPS62993-Q1, TPS62903-Q1
Dear TI team,
We received the TPS62903-Q1 EVM and replaced it with TPS62993-Q1 IC, as it is common.
We are operating with MODE/S-CONF with 11k (1MHz, Auto PWM).
Vout=1.8V
We tried line regulation, and at lower loads (<1A), output was proper. But when load was at 2A & 3A, when input voltage reached ~3V, output started fluctuating. Why is this happening as the device supports 100% duty cycle operation.
Also, output is becoming 0 when input is 2.8V.
I have attached necessary waveforms. I kindly request you to provide your feedback on this issue.
Line Reg @ 3A:
Line Reg@2A:
Line Reg @ 1A:
Issue Part zoomed in @ 3A:
Issue Part zoomed in @ 2A: