DC power conversion circuit with constant current output
US7688045B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2007 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Apr 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC power conversion circuit with constant current output includes a DC voltage source, a driving circuit and a control signal generator. The DC voltage source is used for providing DC power. The driving circuit includes a switch, a resistor, a diode, and an inductor. The switch has three ends, one used for receiving a control signal. Furthermore, the switch is used for conducting or cutting off a coupling between the other two ends according to the control signal. The resistor is coupled between the switch and a first grounding end. The diode has a first end and a second end coupled to a second grounding end. The inductor has a first end coupled to the first grounding end, and a second end coupled to a load circuit. The control signal generator generates the control signal for the second end of the switch according to a current of the resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.