Switching Loss Calculation (SLC) and Positive/Negative Slope Compensation Dynamic Droop Scaling (PNC-DDS) Technique for High-Efficiency Multiple-Input-Single-Output (MISO) Systems

Tin Jong Tai, Ke-Horng Chen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Power management is implemented in a multiple-input-single-output system in this paper. Actually, the design of the switching loss calculation circuit in a dynamic droop system (DDS) can decide the optimum driving solution according to the loading condition, i.e., more than one input source is disabled to reduce the switching loss at light loads. On the other hand, multipleinput sources are preferred to reduce the conduction loss at heavy loads. In other words, DDS with power management can achieve low drop output voltage and high efficiency over a wide load range. The positive/negative-compensated technique enhances the performance of the output voltage stability. Experimental results show that efficiency can be improved approximately 12% at light loads when two input sources are regulated at the switching frequency equal to 5 MHz. Simultaneously, good current sharing is also guaranteed.

Original languageEnglish
Pages (from-to)1386-1398
Number of pages13
JournalIEEE Transactions on Power Electronics
Volume24
Issue number5
DOIs
StatePublished - 1 Jan 2009

Keywords

  • Dynamic droop
  • multiple input
  • positive/negative compensated (PNC)
  • single output
  • switching loss calculation (SLC)

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