| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === This thesis presents an AC-DC converter with negative voltage output. The circuit topology is based on the 'CUK power factor correction converter with inherent voltage step-up/down features. The input and output currents are continuous, low ripple currnet can be achieved. Using UC3842 control IC and the clamp current mode control and voltage-follower control, the studied AC-DC converter has high input power factor. The operating principles for the 'CUK power factor correction converter, clamp current mode control, voltage-follower control, and slope compensation are anlyzed and discussed. Some PSIM simulation results are shown to verify feasibility of the design. An 100W clamp-current-mode control 'CUK power factor correction converter is implemented and tested. The experimental results are fully agreed with the theoretical anlysis.
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