Current detector circuit and current-mode DC-DC converter using same
US7659706B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2007 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Jan 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current detector circuit for detecting a load current flowing through a load includes a first series circuit having a first element and the load connected in series, a second series circuit having a second element and a resistor connected in series, the second element having a temperature characteristic equal to the temperature characteristic of the resistance of the first element, a power supply configured to supply voltage to the first series circuit and the second series circuit, and a control circuit configured to control the voltage drop across the second element so that the voltage drop across the second element is equal to the voltage drop across the first element. A current detection signal corresponding to the load current is generated based on a current flowing through the second element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.