dear
TPS54170+TPS54386TPWPRQ power swith frequency show as bellow
TPS54170+TPS54386TPWPRQ EMI fail and ADI LT8530 pass, is there solution about reduce EMI radiation? thanks in advance
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dear
TPS54170+TPS54386TPWPRQ power swith frequency show as bellow
TPS54170+TPS54386TPWPRQ EMI fail and ADI LT8530 pass, is there solution about reduce EMI radiation? thanks in advance
Hi, He
1. Confirm the result with you, is below correct?
"TPS57140 +TPS54386" --> EMI fail??
"TPS57140 +LT8530" --> EMI pass??
2. I cannot find LT8530 too, what is the LT8530? is it a buck converter?
Comments for improve EMI performance:
1. Add 2*0.1uF for tps54386, one is placed close to PVDD1 in layout, the other is placed close to PVDD2 in layout.
2. Besides, the EMI performance is usually determined by 1st stage converter, so we should focus on TPS57140, maybe you can post another thread to ask how to improve TPS57140 EMI.
Ok, suggest below method to improve the EMI performance.
Add 2*0.1uF for tps54386, one is placed close to PVDD1 in layout, the other is placed close to PVDD2 in layout.
Hi ,
Sorry that I will close this threat first. Please re-open it if there is any future question.
BRs,
Lucia