Voltage pump circuit and method supporting power-down data protection
US12141008B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Feb 19, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage pump circuit and method for supporting power-down data protection. The circuit includes: a first capacitor connected to a voltage source; a second capacitor connected to the first capacitor by a second metal oxide semiconductor (MOS); a boost chopper connected to the voltage source and the first capacitor and connected to the second capacitor by a first MOS; a buck chopper connected to the second capacitor and a hard disk; a logic chip connected to the voltage source, the first MOS and the second MOS, where the logic chip is configured to control on or off of the first MOS and the second MOS according to voltage information of the voltage source to realize normal power supply to the hard disk for a normal voltage source, and to prolong power supply time to the hard disk for an abnormal and closed voltage source to save cache data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.