By Teuvo Suntio
This publication collates the knowledge on hand in this subject, hitherto merely to be present in journals and at meetings. It offers the basics and advances in general and small-signal modeling of switched-mode converters, sooner than utilising this knowledge to generate a true canonical converter version. useful examples are scattered during the textual content, and experimental proof is pointed out to help theoretical findings.
the result's a superb foundation for figuring out and using the dynamics of switched-mode converters -- for the 1st time of their 40-year history.Content:
Chapter 1 creation (pages 1–16):
Chapter 2 foundation for Dynamic research and keep watch over Dynamics (pages 17–58):
Chapter three normal and Small?Signal Modeling of Direct?On?Time managed Converters (pages 59–119):
Chapter four general and Small?Signal Modeling of Peak?Current?Mode regulate (pages 121–168):
Chapter five normal and Small?Signal Modeling of Average?Current?Mode keep an eye on (pages 169–188):
Chapter 6 regular and Small?Signal Modeling of Self?Oscillation keep watch over (pages 189–210):
Chapter 7 Dynamic Modeling and research of Current?Output Converters (pages 211–224):
Chapter eight Interconnected platforms (pages 225–260):
Chapter nine keep watch over layout matters (pages 261–305):
Chapter 10 The Fourth?Order Converter – Superbuck (pages 307–349):
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Additional info for Dynamic Profile of Switched-Mode Converter: Modeling, Analysis and Control
Of linear equations can be viewed as the transformation of one vector into another. Consider, for example, the n simultaneous linear equations: y1 = a11 x1 + a12 x2 + · · · + a1n xn y2 = a21 x1 + a22 x2 + · · · + a2n xn .. 19 Control bandwidth (fs−3 dB ) versus loop crossover frequency (fgco ). 20 Typical effect of RHP zero on the control-to-output transfer function. 74) or y = A · x, where the operator · stands for multiplication and will be deﬁned later. 75). 76). 3 Matrix Multiplication If the product AB is deﬁned by C = AB, where cij , the element of C in the ith row and jth column, is found by adding the products of the elements of A in the ith row with the corresponding elements of B in the jth column.
28 · f ; the phase of the transfer function starts changing already 10 times earlier than the location of the corresponding zero or pole, and keep on changing up to 10 times higher frequencies than the location of the zero or pole. These facts are forgotten very often. 3 Second-Order Transfer Function The second-order polynomial is typically expressed as s2 + s · 2ζ ωn + ωn2 or as s2 + s · ωQn + ωn2 comprising either zeros or poles in the corresponding transfer function, where ζ is called damping factor, ωn undamped natural frequency, and Q quality factor.
6 Control-block diagrams for a current-output converter: (a) output dynamics and (b) input dynamics. 7 Closed-loop converter. may have a multiloop control system, where the voltage loop is the main or inner loop, and the current loop is the outer loop activated in the case of excess load current by reducing the voltage-loop reference in order to make the output power or current constant as described in detail in . The overload protection is typically needed in the applications where the converter has to recharge a storage battery .
Dynamic Profile of Switched-Mode Converter: Modeling, Analysis and Control by Teuvo Suntio