I have a 5volts to 30Volts Boost converter design. Using TPS 40211 DGQR Chip. I designed to output at 30Volts DC with max output current to be 200mA. When I start the circuit, the converter makes the hissing noise, and I think this may be adding some fluctuation to the circuit. I read from the forum saying that this may be a from an inductor and capacitor. I used the TI design tool, and I made sure that all my components are within the spec range. Could this hissing noise coming from the fact that my circuit is drawing more current than it was designed to be? I am not sure what is the cause of this issue. I am using 30Volts DCDC converter to power THS 3092 chip to generate 18.72Meg sinusoidal(18voltsp2p) to deliver this wave to the coil. I replaced 4.7uF with the 10uF 63Volts rated big capacitor(1205) size to the input of the converter to remedy this issue, but it wasn't helpful at all. I am attaching this Schematic and the PCB board layout. Any help would be greatly appreciated. I don't get hissing noise when the 30Volts is not connected to the opamp. It just happens when the circuit is turning on, and sometimes it goes away, and some times it comes back. I think that this is causing the circuit to have. unstable results.
Thank you so much
