Step-down DC/DC converter for converting a high DC input voltage into a low DC output voltage
US6157181A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It is an object of the present invention to provide a step-down DC/DC converter which is resistant to common-mode noise, there are no significant restrictions on a main transistor used, on its energizing circuit and the frequency of the on and off cycles of the main transistor, etc., and is capable of generating a low DC output voltage from a high DC input voltage. The step-down DC/DC converter has a DC power supply, a main switching element having a drain terminal connected to a positive terminal of the DC power supply, an inductive element having a terminal connected to a source terminal of the main switching element, a first capacitor connected between the inductive element and a negative terminal of the DC power supply, a first diode connected between the source terminal of the main switching element and the negative terminal of the DC power supply parallel to a series-connected circuit of the inductive element and the first capacitor, a resistive element having a terminal connected to the positive terminal of the DC power supply and the drain terminal of the main switching element, a second capacitor connected between the resistive element and the source terminal of the main s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.