Switch driver with a low-cost cross-conduction-preventing circuit
US9379699B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Nov 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018521
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver for a power transistor switch comprising a FET complementary output stage which is driven by another FET complementary pre-driver stage which is further driven by an input-buffer and level-shifter stage. The pre-driver stage includes a current-limiting and cross-delaying circuit which is inserted in between drains terminals of a complementary FET pair. The current-limiting and cross-delaying circuit limits shoot-current at the pre-driver stage; and in conjunction with the FET pair and the input-buffer and level-shifter stage, it is adapted to delay turning on one complementary output FET until after the other complementary output FET is turned off, thereby preventing cross conduction at the output stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.