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Average Model for PWM switch

Average Model for PWM switch. Averaging Circuit Equations of PWM Switch. where. Averaging Power Stage Dynamics. Average Model for PWM Switch. Continuous Duty Ratio. Averaging Power Stage Dynamics. Continuous Duty Ratio. Averaging Power Stage Dynamics. Buck Converter Example.

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Average Model for PWM switch

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  1. Average Model for PWM switch • Averaging Circuit Equations of PWM Switch where AveragingPower Stage Dynamics • Average Model for PWM Switch

  2. Continuous Duty Ratio AveragingPower Stage Dynamics

  3. Continuous Duty Ratio AveragingPower Stage Dynamics

  4. Buck Converter Example AveragingPower Stage Dynamics

  5. Implication of Average Model AveragingPower Stage Dynamics

  6. Average Model for Three Basic Converters AveragingPower Stage Dynamics

  7. Linearization of Nonlinear Function Linearizing Averaged Power Stage Dynamics

  8. Linearization of simple Algebraic Equation • For simple algebraic nonlinear equations, the small-signal model can be found by • 1) Evaluating the nonlinear equation with the variables consisting of the dc and • ac components • 2) Equating only the ac component of the input and output variables in the • resulting expression. • Example: small-signal gain of y=x2 evaluated at x=2 Linearizing Averaged Power Stage Dynamics

  9. Small-signal Model for PWM Switch Model • Small-signal modeling linearizing Averaged Power Stage Dynamics

  10. Models of PWM Switch linearizing Averaged Power Stage Dynamics

  11. Small-signal Model for Three Basic Converters linearizing Averaged Power Stage Dynamics

  12. S-domain Representation of Small-signal Model linearizing Averaged Power Stage Dynamics

  13. Input-to-Output Frequency Response Frequency Response of Converter Power Stage

  14. Duty ratio-to-Output Frequency Response Frequency Response of Converter Power Stage

  15. Bode Plot Representation of Frequency Response Frequency Response of Converter Power Stage

  16. s-domain Small-signal Model • Input-to-Output Transfer Function: Frequency Response of Converter Power Stage • Input-to-Output Frequency Response

  17. Buck Converter Example Frequency Response of Converter Power Stage

  18. Small-signal Gain of PWM Block Small-Signal Gain of PWM Block • Control Law • Approximation • Linearization

  19. Transfer Function of Voltage Feedback Circuit Small-Signal Gain of PWM Block

  20. General Circuit Diagram for Three Basic PWM Converters Small-Signal Gain of PWM Block

  21. Small-signal Model for Three Basic Converters Small-Signal Models for PWM Dc-to-Dc Converters

  22. Block Diagram Representation Small-Signal Models for PWM Dc-to-Dc Converters

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