Title:
INSULATED SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2019/117240
Kind Code:
A1
Abstract:
This forward-type insulated switching power supply suppresses counter-electromotive force generated in a primary coil during the OFF time of a switching element, and comprises: a transformer (T); a switching element (Q); a first rectifying element (D1) and an inductor (L); and a second rectifying element (D2). The switching power supply has a capacitor (C2) connected between the other terminal of a secondary coil (Ns) and a negative electrode output end, and a third rectifying element (D3) connected between one end of the secondary coil and a negative electrode output end (n). During an ON period, discharge current of the capacitor flows to the secondary coil, the first rectifying element, and the inductor and is output. During an OFF period, the discharge current of the capacitor flows through the second rectifying element and the inductor and is output, and charging current also flows through the third rectifying element and the secondary coil.
More Like This:
| JPS5534887 | DCCDC CONVERTER |
| JPH01198274 | CONTROLLABLE DC VOLTAGE CONVERTER |
| JPS5914980 | [Title of the Invention] Switching regulator |
Inventors:
HANEDA MASAJI (JP)
Application Number:
PCT/JP2018/045850
Publication Date:
June 20, 2019
Filing Date:
December 13, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
H02M3/28
Foreign References:
| JP2015228760A | 2015-12-17 | |||
| JP2015070716A | 2015-04-13 | |||
| JP2013055783A | 2013-03-21 |
Attorney, Agent or Firm:
KOJIMA Takiro (JP)
Download PDF: