Journal of Power Electronics

  • 제18권6호
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  • Pages.1627-1633
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  • 2018
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Rapid Dynamic Response Flyback AC-DC Converter Design

  • Chang, Changyuan (School of Microelectronics, Southeast University) ;
  • Wu, Menglin (School of Microelectronics, Southeast University) ;
  • He, Luyang (School of Microelectronics, Southeast University) ;
  • Zhao, Dadi (School of Microelectronics, Southeast University)
  • 투고 : 2018.05.07
  • 심사 : 2018.07.17
  • 발행 : 2018.11.20
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초록

A constant voltage AC-DC converter based on digital assistant technology is proposed in this paper, which has rapid dynamic response capability. The converter operates in the PFM (Pulse Frequency Modulation) mode. According to the load state, the compensation current produced by the digital compensation module was injected into the CS pin to adjust the switching pulse width dynamically and improve the dynamic response. The control chip is implemented based on NEC $1{\mu}m$ 5V/40V HVCMOS process. A 5V/1.2A prototype has been built to verify the proposed control method. When the load jumps from idle to heavy, the undershoot time is only 7.4ms.

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참고문헌

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