Feedback apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem
US6525515B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/573
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A feedback apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem controls the inrush current of the hot-pluggable subsystem upon application of power. The apparatus and method adaptively control a pass device by detecting the current through the pass device during initial charging of a load capacitance and scaling back the turn-on rate at the pass device control terminal input in conformity with the detected current and a predetermined rate set by a ramp generator. A ramp capacitor is coupled to the control terminal of the pass device through a diode to permit use of the capacitor for timing purposes as well as preventing transient turn-on of the pass device during initial application of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.