Open AccessHigh‐step‐up single‐switch DC–DC converter with low voltage spike
Author(s) -
Hwu KuoIng,
Jiang WenZhuang,
Yang LiChing
Publication year - 2015
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2014.0789
Subject(s) - boost converter , inductor , electrical engineering , leakage inductance , ćuk converter , voltage spike , capacitor , forward converter , charge pump , voltage multiplier , voltage , low voltage , converters , inductance , diode , high voltage , computer science , engineering , voltage divider , dropout voltage
DC–DC converters using coupled inductors have been developed for many years. However, to prevent the high voltage spikes across main switches and diodes, the leakage inductance energy recycling will be an important issue. Consequently, a high‐step‐up single‐switch DC–DC converter with low voltage stress is presented herein. The proposed converter integrates a coupled inductor and switched capacitors not only to realise a high voltage gain but also to recycle the leakage inductance energy. Accordingly, the voltage spikes on the switch and diodes can be clamped at some values as low as possible. Moreover, similar to the traditional boost converter, the source terminal of the MOSFET is connected to the ground. Therefore, no isolated driver is required. Eventually, the detailed analysis of the proposed converter and an experimental prototype with 12 V input voltage, 200 V output voltage and 100 W output power are provided to verify the effectiveness of the proposed converter.