Abstract
Dynamic phenomenon is a key factor limiting stability performance for peak-current-mode-controlled (PCM-controlled) single-inductor dual-output (SIDO) Buck converter. The paper published before has established 1-D approximate discrete iterative model for PCM-controlled SIDO DC-DC converter, which has investigated dynamic phenomenon and stability with variation of main circuit parameters. However, the model is not adjust to investigate dynamic phenomenon and stability with variation of load parameter and control parameters. In this paper, the 5-D accurate discrete iterative map model of PCM controlled SIDO Buck converter in continue conduction mode (CCM) is established. Based on this, the dynamic analysis is emphatically studied by bifurcation diagram. Then, the effects of control parameter on the stable range of load parameters are obtained. Finally, experimental results are carried out to verify theoretical analysis results.
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