以DC-DC变换器为核心的开关电源已经深入应用到电子产品领域。为了满足便携式电子产品的输入电压的要求，Boost DC-DC变换器电路拓扑已成为典型的选择，因此研究Boost DC-DC变换器系统的分析和设计方案具有重要的意义。 本文首先以Boost DC-DC变换器为研究对象，对其基本原理、结构、特点进行了深入的研究，详细分析了工作在CCM模式下主电路元件的电应力，在输入电压和负载电阻变化的动态范围内得到了最坏工况的应力点；通过Maple软件仿真验证了其结论的正确性。 其次采用状态空间平均法对主电路进行线性化，得到变换器控制占空比到输出的传输函数；然后对电压控制型Boost DC-DC变换器系统组成进行分析，详细推导了开环传递函数，从小信号模型角度研究了系统特性。在此基础上，对电压控制型Boost DC-DC变换器系统在频域中进行稳定性分析，采用Bode图法对PID补偿网络进行详细的分析和设计，得到了III型双零点-双极点PID补偿网络，改进了系统的稳定性。 最后，给定Boost DC-DC变换器系统参数，用Saber软件对改进的电路进行仿真验证，仿真结果表明该方法达到了预期的稳定效果；根据设计方案完成了实验电路设计和制作，并对整个系统进行了测试和分析。测试结果表明，Boost DC-DC 变换器系统的技术参数完全满足实际应用的要求，验证了设计方案的可行性。

Switching power supply with DC-DC converter as transfer key is applied to electronic product fields. To meet requirements of the input voltage of portable electronic products, Boost DC-DC converter is becoming the typical circuit topology, therefore research deeply on analysis and design of the Boost DC-DC converter has very important meaning. Taking Boost DC-DC converter as the research object firstly, in the paper, studying deeply its basic principle, structure, characteristics, analyzing electrical stress of the major elements in CCM (Continuous Conduction Mode), and obtaining the worse case point in the dynamic range of the input voltage & load resistor. An simulation is made with Maple software, the results validate the accuracy of the conclusion. Secondly, using state-space average method to linearize the main circuit to obtain transfer function of the converter from the control duty cycle to the output, analyzing Boost DC-DC converter system based on voltage-mode control, and deducing the open-loop transfer function in detail, meanwhile, the system characteristics based on small signal mode is studied deeply. Based on which, the stability of the converter system is analyzed in frequency domain, then using Bode method to analyze and design the PID compensation network to obtain the dual-zeros & dual-poles type III operational amplifier compensation network, the stability of the converter system have been improved. Finally, according to given parameters of the converter system, using Saber software to simulate the improved circuit, and the results of which show that the system has reached stability effects. In terms of design scheme, the experimental circuit is designed and accomplished, and then via test, the results show that all technical parameters of the Boost DC-DC converter meet actual requirements completely and the design proposed is feasible.