Power supply circuit for south bridge chip
US8013644B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Oct 23, 2009 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Oct 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply circuit for a south bridge chip includes a voltage sampling circuit, a control circuit, and an I/O controller. The voltage sampling circuit comprises an input terminal capable of receiving a first voltage, and an output terminal capable of outputting a control signal. The control circuit is capable of receiving the control signal from the voltage sampling circuit and outputting a power good signal when a high voltage level control signal is received. The I/O controller is capable of receiving the power good signal from the control circuit, adjusting time sequence for the power good signal to synchronize with the first voltage, and outputting the adjusted power good signal to provide power for the south bridge chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.