Other Parts Discussed in Thread: TAS5805
Tool/software:
Hi Team,
We are supporting customer on TAS5815 to pass EMI certification, currently EMI standard required <40db, customer board EMI test result on TAS5815 is 44 db, we have tried below ways:
1) Enable SS feature, Fsw = 768KHz, RAMP_SS_CTRL1 = 0x0F, still have 4 db gap on EMI, see below picture
2) Will try to disable/enable Bit 0 of ANA_CTRL Register 0x53 which is used to disable or enable the phase shift.
Understanding there are some HW design requirement on EMI design, but similar HW design have already implemented on TAS5805 and TAS5825 without EMI issues, so except HW debug, as customer board is there, do you have any suggestion to make EMI lower from software configure ways?
-Thomas
