Potential and rate adjust header switch circuitry reducing transient current
US7570100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2004 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Aug 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/167
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
System and method for providing power to circuitry while avoiding a large transient current. A preferred embodiment comprises a distributed switch (such as switch arrangement 400) with a plurality of switches (such as switch 405) coupling a power supply to the circuitry. Each switch is individually controlled by a control signal and is turned on sequentially. Also coupled to each switch is a pre-driver circuit (such as pre-driver circuit 410). The pre-driver circuit comprises a potential adjust circuit (such as potential adjust circuit 505) that rapidly adjusts a voltage potential at the switch and a rate adjust circuit (such as the rate adjust circuit 520) that accelerates the power ramp-up across the switch once transient currents are no longer a concern. Adjusting the voltage potential so that the switch operates in a saturation mode increases an effective capacitance across the switch and thereby retarding the power ramp-up across the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.