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CURRENT-MODE CONTROL IN COUPLED-INDUCTOR STEP-DOWN SWITCHING DC-DC CONVERTER
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| Author(s) |
A. Pietkiewicz; D. Tollik |
| Abstract |
In the paper the small-signal low-frequency model of the coupled-inductor step-down switching converter operated in current-programmed mode is derived using the unified topological modelling method. From the model the two essential open-loop transfer functions are found: the input-to-output transmittance predicting
complete rejection of the line voltage variations and the control-to-output transmittance having the extremely simple one-pole form, which drastically simplifies the loop-gain compensation design. These advantages combined with integration of both inductors into one magnetic element prove the usefulness of the structure
for voltage step-down applications without dc isolation. |
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| Filename: | Unnamed file |
| Filesize: | 2.814 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-01 by System |
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