Switch current source circuit and method for quickly establishing switch current source
US11829176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2020 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | May 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a switching current source circuit and a method for quickly establishing a switching current source. The switching current source circuit includes a first and a second switching current source branches connected in parallel with one end of a load. When the switching enable signal is switched, due to the charge coupling of the first and second switching current source branches, the bias voltage respectively generates bounce in the same direction as and a direction opposite to the transition direction of the switching enable signal. The two bounces cancel each other to make the current source bias voltage recover quickly when a toggle event happens. The present disclosure accelerates the establishment of current through the coupling of charges, and reduces the decoupling capacitance at the same time, thereby reducing the circuit area and saving the costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.