Switch control circuit and switch circuit
US11038505B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/066
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a switch control circuit coupled between a switch control node and a voltage terminal. The switch control node is between an input circuit and a switch. The switch control circuit includes: an electronic component being turned on or off according to voltages of the switch control node and a control voltage node in a power-on state and preventing the voltage of the switch control node from being higher than a predetermined voltage in a power-off state; a control circuit outputting a control signal to the control voltage node in the power-on state and having no effective control over the voltage of the control voltage node in the power-off state; and a resistive component coupled between the control voltage node and voltage terminal. The electronic and resistive components function as at least a part of a leakage path to assist in turning off the switch in the power-off state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.