A LOW DROPOUT REGULATOR FOR SOC WITH Q REDUCTION

• Main Authors: Wen-Ho Ku, 古文河
• Other Authors: Shu-Chuan Huang
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/78563736509740573261

碩士 === 大同大學 === 通訊工程研究所 === 101 === In wireless communication market, portable devices are popular. Most of the products are powered by batteries. So, how to improve the efficiency and reduce the dimension of the portable device is a direction of technological development. For technological development, SOC is a good choice. LDO (Low-dropout regulator) can provide a stable and accurate supply voltage. It is low cost, easy to use, active noise filtering and generation of multiple output voltages from a single source. In this thesis, the key point is off-chip capacitor free, which can reduce the usage of PCB space to reduce the dimension of SOC. In addition, we employed the circuit design technique to reduce Q factor of the complex poles and improve the transient response.