| 发明名称 |
On-chip low voltage capacitor-less low dropout regulator with Q-control |
| 摘要 |
Systems and method for a capacitor-less Low Dropout (LDO) voltage regulator. An error amplifier is configured to amplify a differential between a reference voltage and a regulated LDO voltage. Without including an external capacitor in the LDO voltage regulator, a Miller amplifier is coupled to an output of the error amplifier, wherein the Miller amplifier is configured to amplify a Miller capacitance formed at an input node of the Miller amplifier. A capacitor coupled to the output of the error amplifier creates a positive feedback loop for decreasing a quality factor (Q), such that system stability is improved. |
| 申请公布号 |
US8872492(B2) |
申请公布日期 |
2014.10.28 |
| 申请号 |
US201113091715 |
申请日期 |
2011.04.21 |
| 申请人 |
QUALCOMM Incorporated |
发明人 |
Zhang Junmou;Chua-Eoan Lew G. |
| 分类号 |
G05F1/40;G05F1/575 |
主分类号 |
G05F1/40 |
| 代理机构 |
|
代理人 |
Min Donald D. |
| 主权项 |
1. A capacitor-less Low Dropout (LDO) voltage regulator comprising:
an error amplifier configured to amplify a differential between a reference voltage and a regulated LDO voltage; and an output node of a Miller amplifier coupled to an output of the error amplifier, wherein the Miller amplifier is configured to amplify a Miller capacitance formed at an input node of the Miller amplifier. |
| 地址 |
San Diego CA US |
