Droop circuits and multi-phase DC-DC converters
US7928704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2008 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A droop circuit of a DC-DC converter is provided, wherein the DC-DC converter includes an output inductor coupled between an output of the DC-DC converter and a phase node for providing an output voltage. A current sense device is coupled between the phase node and the output of the DC-DC converter, includes an inductor coupled to the phase node and senses a current from the phase node. A first resistor is coupled to the current sense device. An amplifier circuit includes an amplifier having an inverting input, a non-inverting input coupled to the first resistor and an output directly connected to the inverting input, and a second resistor coupled between the inverting input and the output of the DC-DC converter. The amplifier circuit provides a droop current according to the second resistor and a voltage difference between the non-inverting input and the output of the DC-DC converter, and the voltage difference is related to the current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.