Hi Sir,.
customer got the LM3406 Vin disturbance testing with inductor noise, 3406 switching 130-150KHz
the disturbance source is three each : a. 1-10KHz :Ipp 6, 10KHz-100KHz : 6-5.4log(f/10)*
b. 0.05-1KHz : 0.2Vp-p , 10K-100KHz: 2Vpp
c. 2-10KHz 0.5Vp-p , 60KHz-100KHz 5Vp-p
then got inductor noise then adjuge to fail,
How`s the way reduce the ear heared nosie please ?