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Effect of output current feedback on converter dynamics
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| Author(s) |
T. Suntio; K. Kostov; T. Tepsa; J. Kyyrä |
| Abstract |
In this paper, a consistent methodology to assess the effect of load current feedback on the converter
dynamics to obtain zero output impedance or load invariance under constant-voltage control is
presented. It is shown that the unity feedback in the case of a peak-current-mode (PCM) controlled
buck derived converter results in a near-zero-output-impedance condition. For the boost and buckboost
derived converters similar reductions of output impedance may not be possible to obtain due to
the non-minimum-phase behavior and the duty-ratio dependency of the control-to-output transfer
function. |
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| Filename: | EPE2003-PP0107 - Suntio |
| Filesize: | 659 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-01-21 by Unknown |
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