Hello TI experts,
My customer made PCB with TPS55340, and they found that there is an audible noise around TPS55340.
first here is the schematic.
(input is 8V, and output is 16.5V/2A)
we already tested with power supply, input and output. so it is the problem of TPS55340 and the components around.
and here are the things what we tested.
1. change the value of inductor -> 6.8uH, 4.7uH, 3.3uH
2. change the value of output capacitor -> totally 20uF and 10uF
3. change the value of R and C of comp pin (based on the E2E thread below)
but there is still audible noise even we tried these 3 methods.
is there anything that we can remove this noise?
and please let me know if you need more information about this. Thanks.