Patent ID: 6411153
Filing Date: 2002-06-25
Classification: H02M

Abstract:
A universally applicable zero voltage transition switching cell having a first terminal and a second terminal comprisingfirst switch means having a first terminal and a second terminal with said first terminal of said first switch means connected to said first terminal of said switching cell, a first inductor having a first terminal and a second terminal with said first terminal of said first inductor connected to said second terminal of said first switch means and with said second terminal of said first inductor connected to said second terminal of said switching cell, a switch capacitor series network having a first terminal and a second terminal with said first terminal of said switch capacitor series network connected to said first terminal of said first inductor and said second terminal of said switch capacitor series network connected to said second terminal of said first inductor comprising, a first capacitor, second switch means placed in series with said first capacitor operable substantially in anti-synchronization to said first switch means, whereby said first inductor provides energy to drive a zero voltage turn on transition for said first switch means when placed in a pulse width modulated power converter in which said switching cell is employed in place of the main switch.