| Title |
Improved AC/DC PFC ZVT Boost Converter |
| Authors |
Jong-gue You ; Yong Kim ; Jin-Yong Bae ; Eun-Young Lee ; Gyu-Man Cho |
| Keywords |
ZVT(Zero-Voltage-Transition) ; PFC(Power-Factor-Correction) ; Boost Converter |
| Abstract |
This paper presents the improved AC/DC PFC(Power-Factor-Correction) ZVT(Zero-Voltage-Transition) Boost Converter. The conventional AC/DC PFC ZVT Boost Converter minimizes the switching loss of the main switch within all of the load range. That is because AC/DC PFC ZVT Boost converter makes the main switch and the auxiliary switch turn on simultaneously so that it makes ZVS(Zero-Voltage-Switching) possible at the light load. However, it has two problems that are large loss of the auxiliary switch and the increasing of the reverse current of the main switch. Therefore this research presents high efficiency to reduce the current stress of the auxiliary switch and the reverse current of main switch by adding a diode to the conventional ZVT converter. The prototype of 640[W], 100[kHz] system using MOSFET is implemented for this experimental verification. |