Start-up circuit and control for high power isolated boost DC/DC converters

Publication Date
2003-07-01Filing Date
2001-05-24Inventor
Lee, Fred C.
Zhu, Lizhi
Lai, Jin-Sheng
Metadata
Show full item recordAbstract
The invention is a scheme for high power isolated full-bridge boost DC/DC converters to minimize the effect of in-rush current during start-up. A single pulse width modulation controller (PWM) is possible for the present invention for not only start-up but also normal boost modes. A primary circuit can have a clamping switch or at least two choke diodes. The choke diode can include “push-pull” and “L”-type configurations. A resistor can be used to dissipate energy clamped from the voltage spike. A startup circuit can be used to eliminate the in-rush current experienced during start-up. The proposed start-up schemes have been experimentally verified using a 1.6 kW, 12V/288 V prototype. Since the present invention eliminates the need to match characteristics of multiple controllers, it significantly reduces the cost associated with implementing this type of technology.
Assignee
Virginia Tech Intellectual Properties, Inc.
Patent Number
6587356
Application Number
9866304
Primary/U.S. Class
323/908
Other/U.S. Class
363/17
363/49
363/56.2
363/56.5
CPC Class
H02M1/34
H02M3/3376
H02M2001/342
Y02B70/1491
Y10S323/908
Patent Type
utility
Collections
- Virginia Tech Patents [685]