Desaturation detection circuit for use between the desaturation detection input of an optocoupler and the output of a power switching device
US9214934B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 2014 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Feb 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A desaturation detection circuit for use between the desaturation detection input of an optocoupler and the output of a power switching device, the desaturation detection circuit comprising: a threshold setting element having an input and an output, the input for connection to the output of a power switching device via one or more diode(s), the threshold setting element being arranged to set a threshold voltage at the input at which the threshold setting element will provide an output at the output of the threshold setting element when the input voltage is exceeded, and a detector having an input connected to the output of the threshold setting element and an output connectable to a desaturation detection input of an optocoupler, the detector being arranged to detect an output at the output of the threshold setting element and in response to provide a control signal at the output of the detector for the desaturation detection input to trigger a desaturation routine in the optocoupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.