Predicting a bandgap reference output voltage based on a model to trim a bandgap reference circuit
US11940832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2021 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A first error is determined between a bandgap reference output voltage of a bandgap reference circuit at a first temperature and a target voltage. A second temperature of the bandgap reference circuit is measured. A bandgap reference output voltage of the bandgap reference circuit is predicted at the second temperature and based on the first error. A second error is determined between the bandgap reference output voltage and the target voltage. A trim parameter of the bandgap reference circuit is determined based on the second error. The bandgap reference circuit is set with the trim parameter, where a third error between a bandgap reference output voltage of the bandgap reference with the trim parameter is less than the second error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.