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Title page for etd-0314105-153903


URN etd-0314105-153903 Statistics This thesis had been viewed 2623 times. Download 34 times.
Author Ching-Hsing Hsieh
Author's Email Address No Public.
Department Electrical Engineering
Year 2004 Semester 1
Degree Master Type of Document Master's Thesis
Language English Page Count 64
Title High Efficient Flyback Switching Power Supply
Keyword
  • Standby power
  • Discontinuous conduction mode
  • Flyback converter
  • Quasi-Resonant mode
  • Quasi-Resonant mode
  • Flyback converter
  • Discontinuous conduction mode
  • Standby power
  • Abstract This thesis presents the design and implement a high efficiency of low power consumption Flyback converter that designs Quasi-Resonant mode soft switching in discontinuous conduction mode (DCM). Discontinuous conduction mode transformer delivers the energy that uses inductor(L) and MOSFET’s Coss to generate resonant in MOSFET “ OFF ” status. That VDS will be reduced to low voltage (ZVS) (Even to 0V).The pulse width modulation (PWM) IC will sense the valley and turn on MOSFET in the lowest voltage valley point. This PWM IC (TEA1532) can use little components to design the Feedback control, over voltage protection (OVP), over current protection (OCP), over temperature protection (OTP) and over power protection (OPP). Finally, We will design a switching power supply with input voltage of 90Vac / 47Hz ~ 264Vac / 63Hz, Output voltage of 32Vdc and output current from Imin 0A to Imax 2.344 A ( 75W),efficiency of about 88% typical in 230Vac / 50Hz, Standby power of Pin = 0.45W @ 264Vac / 50Hz at no load that use in printer adapter and can match IEA ( International Energy Agency ) standard requirements. This thesis present a low switching loss and high efficiency green power.
    Advisor Committee
  • Teng-Pin Lin - advisor
  • Chih-Wei Chen - co-chair
  • Wu-Shiung Feng - co-chair
  • Files indicate in-campus access only
    Date of Defense 2005-01-28 Date of Submission 2005-03-14


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