Global patent index - EP 1057246 A1

EP 1057246 A1 2000-12-06 - D.C.-D.C. CONVERTER WITH A TRANSFORMER AND A REACTANCE COIL

Title (en)

D.C.-D.C. CONVERTER WITH A TRANSFORMER AND A REACTANCE COIL

Title (de)

GLEICHSPANNUNGS-/GLEICHSPANNUNGSWANDLER MIT EINEM TRANSFORMATOR UND EINER DROSSEL

Title (fr)

CONVERTISSEUR D.C.-D.C. COMPORTANT UN TRANSFORMATEUR ET UNE BOBINE DE REACTANCE

Publication

EP 1057246 A1 (DE)

Application

EP 99913083 A

Priority

  • DE 9900494 W
  • DE 19808637 A

Abstract (en)

[origin: DE19808637A1] The invention relates to a d.c.-d.c. converter with a transformer and a reactance coil. The inventive d.c.-d.c. converter also has a controllable switch (S1) for switching the direct supply voltage (UB) on and off. The contact gap of a switching transistor (S1) is connected to reference potential on the connection tap between the primary winding (L2p) and the secondary winding (L2s) of the reactance coil (2), which is transformer-coupled with a set transformation ratio (u). The anode-cathode gap of a diode (D1) and an output capacitor (C2) is connected to reference potential in series with the secondary winding (L2s) of the reactance coil, the output voltage (UA) for a load (RL) being applied through the output capacitor. The input direct voltage is conveyed to the primary winding of the reactance coil via an inductor (L1) and a capacitor (C1) is located parallel to the contact gap of the switching transistor, said inductor (L1) and said capacitor (C1) creating a series resonant circuit which is effective in the switch-on and switch-off phase of the switching transistor.

IPC 1-7 (main, further and additional classification)

H02M 3/155

IPC 8 full level (invention and additional information)

H02M 3/155 (2006.01); H05B 41/288 (2006.01)

CPC (invention and additional information)

H05B 41/2885 (2013.01); H02M 3/155 (2013.01); H05B 41/2882 (2013.01); Y02B 20/202 (2013.01)

Citation (search report)

See references of WO 9944278A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

DE 19808637 A1 19990909; EP 1057246 A1 20001206; JP 2002505570 A 20020219; US 6323627 B1 20011127; WO 9944278 A1 19990902

INPADOC legal status

2003-12-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030617

2003-03-26 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030205

2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000928

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT