Title :
A high-efficiency single-stage single-switch high-power-factor AC/DC converter with universal input
Author :
Qian, Jinrong ; Lee, Fred C Y
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
A single-stage single-switch power-factor-correction (PFC) AC/DC converter with universal input is presented in this paper. The PFC can be achieved based upon the charge-pump concept, and the PFC stage operates in the continuous current mode (CCM). The switch has less current and voltage stresses over a wide range of load variation so that a low-voltage rating device can be used. The presented converter features high power factor, high efficiency, and low cost. An 80-W prototype was implemented to show that it has 85% efficiency with low-voltage stress from 0.5% to 100% load variation over universal line input
Keywords :
AC-DC power convertors; power factor correction; switching circuits; 80 W; 85 percent; charge-pump concept; continuous current mode; high efficiency; high power factor; high-efficiency; high-power-factor AC/DC converter; load variation; single-stage single-switch; universal input; universal line input; Analog-digital conversion; Capacitors; Charge pumps; Costs; DC-DC power converters; Load management; Reactive power; Stress; Switches; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
