After simulating the LT3462 with the recommended circuit, there were no problems, so I mounted it on the board.When the input is set to 15V DC and the output is set to 18V,The output changes from about -19V to about -18.5V,A triangular waveform of several MHz is different in the output by about 50 mV.I am troubled because it is different from the set voltage and abnormal oscillation occurs.The pattern of the board is made similar to the recommended pattern.Is there a recommended constant for normal operation?please tell me
https://ez.analog.com/power/f/q-a/534328/how-to-use-lt3464