Claims
- 1. A universally applicable zero voltage transition switching cell having a first terminal and a second terminal comprising
first 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.
- 2. The switching cell of claim 1 further comprising
a rectifier diode coupled to said first terminal and to said second terminal of said switching cell in a parallel connection, whereby said rectifier diode clamps ringing associated with said first inductor and the parasitic capacitance(s) associated with other circuit elements external to said switching cell.
Parent Case Info
[0001] This invention is a continuation of application Ser. No. 09/587,598 filed Jun. 5, 2000.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09587598 |
Jun 2000 |
US |
Child |
09772511 |
Jan 2001 |
US |