Dynamic safe operating area control
US8299767B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Apr 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/0806
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In some implementations, a method of dynamically maintaining a device's operation within a safe operating area (SOA) may include sensing instantaneous voltage and current of the device; determining, based on the sensed instantaneous voltage and current, a value that represents a power dissipated in the device; using the determined dissipated power and a model of thermal behavior of the device to model a junction temperature of the device; and controlling operation of the device based on the modeled junction temperature. A programmable SOA circuit including sensing, scaling, filtering, and controlling functions may be packaged on a single die or in a package with a power transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.