Power detector for digital integrated circuits
US6597215B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power detector on an integrated circuit is described. The integrated circuit has a power supply for supplying a direct current voltage. The power detector has a clamp circuit electrically connected to the power supply for generating a fixed voltage, and a startup circuit electrically connected to the power supply and the clamp circuit for generating a startup signal. When the direct current voltage increases to the fixed voltage, a voltage of an output end of the clamp circuit is increased and fixed at the fixed voltage, and then when the direct current voltage increases to a predetermined voltage, the startup circuit is driven to output the startup signal. Since the power detector can utilize MOS transistors composed of a digital integrated circuit to form its internal elements, the area occupied by the power detector is reduced and the power required by the integrated circuit is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.