公开(公告)号：AT272266T

公开(公告)日：2004-08-15

申请号：AT00972846

申请日：2000-10-09

Applicant: CIT ALCATEL

Inventor： NAVAS SABATER JOSE ANDRES ,  RIVAS SAIZ MERCEDES ,  ALOU CERVERA PEDRO ESCUELA TEC ,  PRIETO LOPEZ ROBERTO ESCUELA T ,  UCEDA ANTOLIN JAVIER ESCUELA T ,  COBOS MARQUEZ JOSE ANTONIO E T

IPC: H02M3/337

公开(公告)号：AT261204T

公开(公告)日：2004-03-15

申请号：AT01401339

申请日：2001-05-22

Applicant: CIT ALCATEL

Inventor： NAVAS SABATER JOSE ANDRES ,  RASCON MARTINEZ MIGUEL

IPC: H02M3/28 ,  H02M3/335 ,  H02M7/21

Abstract: Resonant switched power converter in which the end of a resonant period coincides with the start of a conducting period of a first switching element (11-4), undesirable dead times being avoided during the operation of a self-excited synchronous rectifier (11-6). To achieve this, a first capacitor (11-8) is added which has the characteristic that its capacitance is a function of the duty cycle of the first switching element (11-4). The variation in the value of the capacitance of the first capacitor (11-8) is implemented by adding in parallel thereto a serial combination of a second capacitor (11-8-1) and a second switching element (11-8-2). The value of the capacitance varies between a first value and a second value.