DC-DC converter
US6181579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2000 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Apr 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC--DC converter has a main switching element provided on the primary side of a transformer, a drain to source path of a synchronous rectifier on a rectification side comprising a MOSFET which switches in synchronism with the switching operation of the main switching element disposed on a line connecting one terminal side of the secondary coil of the transformer with an output terminal of a circuit on the secondary side of the transformer, and a gate of the synchronous rectifier on the rectification side connected so as to have applied thereto a voltage corresponding to an output voltage of the secondary coil via an input capacitor on the rectification side, so that a voltage generated on the primary side by switching operation of said main switching element is transmitted to the secondary side to be rectified and smoothed to output a DC voltage. A series circuit including a diode and a charge accumulating capacitor has the forward direction of the diode from the gate to source of the synchronous rectifier and is connected between the gate and source of the synchronous rectifier and a discharge device for the charge accumulating capacitor is connected in parallel with the charge …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.