Switchable power converter with coupled inductor boost and coupled inductor SEPIC for multiple level input line power factor correction
A switchable power converter includes an input section that receives an AC input voltage and rectifies the AC input voltage and a switchable converter section operative to receive the rectified AC input voltage and convert the rectified AC input voltage to an intermediate DC output voltage. The switchable converter section includes at least one configuration switch operative to switch the switchable converter section between a boost converter topology, for low input line voltages, and a SEPIC converter circuit topology, for high input line voltages, and also includes a coupled inductor. The coupled inductor eliminates an open-ended terminal in a load inductor thereby reducing antenna effect. Additionally, the coupled inductor achieves a current ripple steering effect in the boost converter topology, similar to that of the SEPIC converter topology, resulting in a smaller input current ripple requiring a smaller EMI filter.
Koninklijke Philips Electronics N.V.
H H Y
H05B H05B Y02B
inventional inventional additional
Chin
Chang