TY - GEN
T1 - Frequency jitter modulation method for quasi-resonant flyback converter to mitigate EMI
AU - Bai, Yongjiang
AU - Yang, Xu
AU - Zhang, Dan
AU - Li, Le
AU - Chen, Wenjie
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/13
Y1 - 2016/7/13
N2 - Quasi-resonant (QR) flyback converter is the one of the most desirable switching mode power supply for low power chargers due to its low cost and high efficiency. However, to maintain good performance of the converter, there is a trade-off among the design of efficiency, output ripple noise, stabilization and electromagnetic interference EMI. In this paper, a novel frequency jitter modulation method is proposed for variable frequency converter to both mitigate EMI and keep high efficiency. It is acquired by controlling both the turn on edge and the turn off edge of the QR flyback switch. Detailed operation principle of the proposed modulation method is analyzed. To verify the efficiency of the proposed method, a dedicated primary side controlling chip combined with the frequency jitter modulation method is fabricated. The experimental results demonstrated the QR flyback prototype controlled by the integrated chip has excellent EMI performance.
AB - Quasi-resonant (QR) flyback converter is the one of the most desirable switching mode power supply for low power chargers due to its low cost and high efficiency. However, to maintain good performance of the converter, there is a trade-off among the design of efficiency, output ripple noise, stabilization and electromagnetic interference EMI. In this paper, a novel frequency jitter modulation method is proposed for variable frequency converter to both mitigate EMI and keep high efficiency. It is acquired by controlling both the turn on edge and the turn off edge of the QR flyback switch. Detailed operation principle of the proposed modulation method is analyzed. To verify the efficiency of the proposed method, a dedicated primary side controlling chip combined with the frequency jitter modulation method is fabricated. The experimental results demonstrated the QR flyback prototype controlled by the integrated chip has excellent EMI performance.
KW - EMI
KW - Frequency jitter
KW - Quasi-resonant (QR) flyback
UR - https://www.scopus.com/pages/publications/84983247498
U2 - 10.1109/IPEMC.2016.7512632
DO - 10.1109/IPEMC.2016.7512632
M3 - 会议稿件
AN - SCOPUS:84983247498
T3 - 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
SP - 2161
EP - 2167
BT - 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Y2 - 22 May 2016 through 26 May 2016
ER -