Soft-switching type multiple-chip power device (M-Power)

Recently Environmental consideration, such as reduction in energy dissipation, input current distortion and noise, have become necessary for switching power supplies. To address these and the fail-safe requirements, we propose a soft-switching type multiple-chip power device (M-Power). The power supply that uses M-Power satisfies energy saving, low-input current distortion and high safety demands while being compact. High efficiency is achieved by applying a novel soft-switching circuit, and low input current distortion is achieved by using a novel one-converter-type power factor correction circuit. Low-dissipation losses while in standby mode are achieved using a standby mode control that operates at a lower switching frequency than that of normal mode. Fail-safety is achieved by various protection functions with latched shutdown.