中文摘要：

脉冲序列控制技术PT（Pulse Train）应用于电感电流断续工作模式DCM（Discontinuous Conduction mode）DC-DC变换器时特性优良,但应用于连续工作模式CCM（Continuous Conduction Mode）变换器时会出现控制问题,因此PT控制变换器带负载能力不足。针对这一突出问题,研究一种新型的PT控制伪连续工作模式PCCM（Pseudo-Continuous Conduction Mode）变换器,将PT控制技术与新型电路拓扑相结合,有效提高了变换器的带载能力。介绍PT控制PCCM变换器的工作原理,运用Matlab软件得出了仿真工作波形,设计了基于DSP的硬件电路,并得出实验波形,进一步证明了相关结论。

英文摘要：

Pulse train（PT） control technology applied to discontinuous conduction mode（DCM） DC - DC converter has an ideal performance, but for continuous conduction mode（CCM））,it may lead to some control problems, So the load capacity of PT controlled converter is insufficient. In order to solve this problem,a new PT controlled pseudo--continuous conduction mode （PCCM） converter is studied in this paper. It can improve the load capacity of converter by combining the new circuit topology with PT control technology. The principle of PT controlled PCCM converter is introduced and the waveforrns of MATLAB simulations are presented in this paper. Then the hardware circuit design based on DSP and the experiment results are given to prove the interrelated conclusion.