Method and system for balancing power-supply loading
US11502681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2019 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Nov 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter merges even and odd data streams to drive a serialized signal. Identical even and odd drivers take turns driving symbols from respective even and odd streams using respective pull-up transistors and pull-down transistors. Each transistor exhibits a significant source-gate capacitance that is charged when the transistor is turned onto drive the serialized signal. Charging one of these capacitances loads the power supply and thus introduces noise. Each even and odd driver includes a pre-driver that times the charging of a source-gate capacitance in the active driver to the discharge of a source-gate capacitance in the inactive driver. The discharge of the source-gate capacitance in the inactive driver counters the effect of charging the active driver, providing much of the power required by the active driver and thus reducing supply noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.