Gate drive for lower switching noise emission
US7489166B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Nov 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/166
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A gate drive circuit for driving the gate of a power transistor switch comprising a gate drive sourcing circuit supplying gate drive current to the power transistor switch, the gate drive sourcing circuit initially providing a first current to the gate of the power transistor switch and then providing a second current to the gate of the power transistor switch; a circuit for driving the gate drive sourcing circuit, the circuit having a first input for driving the gate drive sourcing circuit to turn on the power transistor switch by providing the first current, the circuit further having a second input coupled to a voltage across the power transistor switch and being controlled by the second input to cause the gate drive sourcing circuit to provide the second current when the voltage across the power transistor switch begins to drop as the power transistor switch begins to turn on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.