Power supply switching circuit, real time clock device, electronic apparatus, mobile unit, and method of controlling power supply switching circuit
US9438073B2 · kind B2 · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2013 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply switching circuit includes a switching circuit that electrically connects a VCC terminal and a VBK terminal in a connected state, a switch control circuit, and a power supply monitoring circuit that monitors a voltage of the VCC terminal, and outputs a voltage of the VBK terminal. The switch control circuit switches a mode from a normal mode in which the switching circuit is intermittently connected to a standby mode in which the switching circuit is opened according to an output signal of the power supply monitoring circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.