| 发明名称 | Linear regulator with improved power supply ripple rejection | ||
| 摘要 | Embodiments of the invention are generally directed to a linear regulator with improved power supply ripple rejection. An embodiment of an apparatus includes an linear regulator to receive a system power supply and to generate a regulated power supply; a first voltage reference generator to generate a first voltage reference for the linear regulator; a second voltage reference generator to generate a second voltage reference for the linear regulator; and a voltage reference and power switcher. In some embodiments, the voltage reference and power switcher is to switch a voltage reference for the linear regulator from the first voltage reference to the second voltage reference and is to switch a part of a power supply for the linear regulator from the system power supply to the regulated power supply. | ||
| 申请公布号 | US9477244(B2) | 申请公布日期 | 2016.10.25 |
| 申请号 | US201414381186 | 申请日期 | 2014.01.10 |
| 申请人 | Lattice Semiconductor Corporation | 发明人 | Luo Kexin;Chu Fangqing;Shen Yu;Wu Zhi;Lee Inyeol |
| 分类号 | G05F1/46;G05F1/56 | 主分类号 | G05F1/46 |
| 代理机构 | Fenwick & West LLP | 代理人 | Fenwick & West LLP |
| 主权项 | 1. An apparatus comprising: a linear regulator to receive a system power supply and to generate a regulated power supply, the linear regulator comprising an error amplifier; a first voltage reference generator to generate a first voltage reference for the linear regulator; a second voltage reference generator to generate a second voltage reference for the linear regulator; and a voltage reference and power switcher; wherein the voltage reference and power switcher is to switch a voltage reference for the linear regulator from the first voltage reference to the second voltage reference and is to switch a power supply for the error amplifier of the linear regulator from the system power supply to the regulated power supply. | ||
| 地址 | Portland OR US | ||