Switching Capacitor ZVS-PWM DC/DC with Self-Driven SE

Description:
A novel switching capacitor PWM converter is proposed.  The converter is a  combination of a switching capacitor converter and a PWM converter, and it has the following advantages:  1) Zero voltage switching of all the MOSFETs.  2) Self-driven to eliminate SR drivers and save drive loss. Therefore there is no need to adjust the synchronous rectifier (SR) control timing, and this reduces body diode conduction loss.  3) High efficiency, flexible, good dynamic performance, and low cost in a solution for higher output current POL applications.  The discrete magnetic can cope with this novel topology.  In order to further reduce SR drive loss, and auto transformer self-driven method was employed.
Patent Information:
Category(s):
Electrical
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
Ming Xu
Ke Jin
Fred Lee
Keywords:
Power Conversion/Control
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