Power supply switching circuit and electronic device
US10454471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Apr 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power supply switching circuit that selects one power supply potential from among a plurality of power supply potentials. This power supply switching circuit is provided with a transistor QP1 that is connected between an input node N1 and node N2 and has a back gate connected to node N1, a transistor QP2 that is connected between node N2 and output node N3 and has a back gate connected to node N3, a transistor QP3 that is connected between input node N4 and node N5 and has a back gate connected to node N4, a transistor QP4 that is connected between the node N5 and N3 and has a back gate connected to node N3, and a control signal generation unit that sets a group of transistors QP1 and QP2 and a group of transistors QP3 and QP4 to a conduction state and sets the other to a non-conduction state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.