| Summary: | 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.
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