Compact and reliable changeable negative voltage transmission circuit
US10153279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2017 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Jun 9, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/038
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compact and reliable changeable negative voltage transmission circuit is described. It is very useful for applications need passing changeable negative voltage to selected pins in certain mode. The changeable negative voltage is 0V when enable signal EN is low and −V1 when enable signal EN is high. The circuit includes a control circuit and an output circuit. The control circuit includes a control high power source VDD and a control low power source VNEG. The control circuit generates control output signals CON and CON_B to the output circuit to output either 0V if IN is low or −V1 if IN is high when EN is high. Only single type VT transistor is used in the transmission circuit without any reliability concern, no extra bias voltage is need, which reduces the area and keeps the manufacturing cost low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.