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Power PSoC 120: Power Converter’s Discontinuous Current Mode Operation

Power PSoC 120: Power Converter’s Discontinuous Current Mode Operation. Course Outline. Section 1: Introduction . Section 2: Origin of discontinuous conduction mode . Section 3: Analysis of voltage conversion ratios. Understand what discontinuous conduction mode is.

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Power PSoC 120: Power Converter’s Discontinuous Current Mode Operation

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  1. Power PSoC 120: Power Converter’s Discontinuous Current Mode Operation

  2. Course Outline Section 1:Introduction Section 2:Origin of discontinuous conduction mode Section 3:Analysis of voltage conversion ratios

  3. Understand what discontinuous conduction mode is Understand how properties of converters change when this mode is entered Understand the techniques for solution of the converter waveforms and output voltage Course Objectives At the end of this course, you should be able to:

  4. 1 Introduction

  5. Discontinuous Conduction Mode (DCM) is commonly observed in DC-DC converters DCM arises when the inductor current reduces to zero and tries to reverse Properties of converters radically change in DCM Conversion ratio becomes load dependent and load voltage regulation becomes inadequate Introduction

  6. 2 Origin of discontinuous conduction mode Power Converter Circuit Elements

  7. Origin of DCM

  8. Origin of DCM

  9. Boundary conditions CCM:I > iL DCM:I < iL I > iL

  10. Boundary conditions

  11. 3 Analysis of voltage conversion ratios Operating Principle

  12. Conversion Ratio

  13. Conversion Ratio • Inductor volt-sec and capacitor charge balance still hold

  14. Conversion Ratio • Inductor volt-sec balance

  15. Conversion Ratio • Capacitor charge balance

  16. Conversion Ratio

  17. Explained what a DCM is Analyzed the conversion ratio for the buck converter in DCM Parasitics contribute to power losses in converters Course Summary

  18. On-Demand Training • Hands-On Workshops • Webinars • Learn More at www.cypress.com/psoc NOW www.cypress.com/training Technical Resources www.cypress.com/designresources Technical Reference Manual Datasheets/Application Notes Reference Designs Support www.cypress.com/support Online Support CYPros Phone Hotline, (425) 787-4814 Next Steps

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