Off-leak current cancel circuit
US6650164B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | May 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/162
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An off-leak current cancel circuit includes an input protection circuit having a first protection transistor connected between a terminal and a high power potential, and a second protection transistor connected between the terminal and a low power potential. The first and second protection transistors flow first and second off-leak currents. A current cancel circuit has a first monitor transistor for flowing a third off-leak current that is smaller than the first off-leak current, and a cancellation circuit for flowing the first off-leak current to the low power potential responsive to the third off-leak current. A current providing circuit has a second monitor transistor for flowing a fourth off-leak current that is smaller than the second off-leak current, and a providing circuit for providing the second off-leak current from the high power potential responsive to the fourth off-leak current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.