Control circuit having a comparator for a bandgap circuit
US8040340B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2007 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Nov 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control circuit for a start-up circuit that induces current flow in a bandgap circuit during a start-up phase is disclosed. A comparator passes a power supply to the start-up circuit according to an internal node of the bandgap circuit after the start-up phase. An activating circuit is used to activate the comparator to obtain the power supply at an output earlier than another output node of the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.