TY - GEN
T1 - EMC guideline for synchronous buck converter design
AU - Kam, Keong
AU - Pommerenke, David
AU - Centola, Federico
AU - Lam, Cheung Wei
AU - Steinfeld, Robert
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Synchronous buck converters generate broadband noise typically in 50 - 300 MHz range. In this paper, the root cause of this broadband noise and possible coupling mechanisms are analysed. Then, a list of EMC design guideline for minimizing the broadband noise is presented. The guideline contains circuit level guideline which involves input filtering, component selection, and an effective snubber strategy using a parallel resistor and inductor. The guideline also contains layout level guideline, which involves decoupling capacitor placement, layer stackup, and minimizing exposed phase voltage area. For each suggested guideline item, an example illustrates the impact of the particular strategy through experimental results or SPICE simulations, leading to a strong reduction of broadband noise from the synchronous buck converter.
AB - Synchronous buck converters generate broadband noise typically in 50 - 300 MHz range. In this paper, the root cause of this broadband noise and possible coupling mechanisms are analysed. Then, a list of EMC design guideline for minimizing the broadband noise is presented. The guideline contains circuit level guideline which involves input filtering, component selection, and an effective snubber strategy using a parallel resistor and inductor. The guideline also contains layout level guideline, which involves decoupling capacitor placement, layer stackup, and minimizing exposed phase voltage area. For each suggested guideline item, an example illustrates the impact of the particular strategy through experimental results or SPICE simulations, leading to a strong reduction of broadband noise from the synchronous buck converter.
KW - Broadband EMI
KW - SMPS
KW - Snubber
KW - Synchronous buck converter
UR - http://www.scopus.com/inward/record.url?scp=74349104124&partnerID=8YFLogxK
U2 - 10.1109/ISEMC.2009.5284594
DO - 10.1109/ISEMC.2009.5284594
M3 - Conference paper
AN - SCOPUS:74349104124
SN - 9781424442676
T3 - IEEE International Symposium on Electromagnetic Compatibility
SP - 47
EP - 52
BT - 2009 IEEE International Symposium on Electromagnetic Compatibility, EMC 2009
T2 - 2009 IEEE International Symposium on Electromagnetic Compatibility
Y2 - 17 August 2009 through 21 August 2009
ER -