Breakpoint compensation and thermal limit circuit
US4789819A · kind A · utility
36Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1986 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Nov 18, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage reference circuit including a Brokaw Cell band-gap reference circuit is provided with breakpoint compensation to adjust the temperature coefficient of the reference voltage provided by the Brokaw Cell as a function of temperature. The voltage reference circuit also includes a thermal limit transistor which is biased by a voltage having a positive temperature coefficient. The thermal limit transistor draws a rapidly increasing current when the operating temperature reaches a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.