Current protection circuit for intelligent power switch
US8488289B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2007 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Jul 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/26
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An intelligent power switch (IPS) circuit providing current protection for a power switch, a gate terminal of the power switch being controlled by a first control signal generated by a gate driver. The IPS circuit includes a first circuit to measure a current in the power switch, determine a first difference between a first voltage and a first reference voltage, and reduce the first control signal if the first difference exceeds a first predetermined limit; and a second circuit to measure the current in the power switch and determine a second difference between the first voltage and a second reference voltage, wherein if the second difference exceeds a second predetermined limit the first control signal is set to turn OFF the power switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.