Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip buck converter

Wen Wei Chen; Jiann Fuh Chen; Tsorng Juu Liang; Lu Chi Wei; Wei Yuan Ting

doi:10.1109/TPEL.2013.2256151

Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip buck converter

Wen Wei Chen, Jiann Fuh Chen, Tsorng Juu Liang, Lu Chi Wei, Wei Yuan Ting

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip Buck converter is proposed in this paper. This configuration maintains system stability under different input/output voltages without changing the inductor and compensation circuit. The dynamic ramp can be adjusted according to the variation in the output voltage or the voltage droop between the input voltage and the output voltage to maintain bandwidth and phase margin using the invariant inductor and compensation circuit. Finally, 14-V input voltage, 12-V output voltage, and 24-W output power with the dynamic ramp sampling the output voltage is implemented using MathCAD predictions, SIMPLIS simulation results, and experimental results to verify its viability and superiority.

Original language	English
Article number	6491486
Pages (from-to)	750-758
Number of pages	9
Journal	IEEE Transactions on Power Electronics
Volume	29
Issue number	2
DOIs	https://doi.org/10.1109/TPEL.2013.2256151
Publication status	Published - 2014

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TPEL.2013.2256151

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abstract = "Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip Buck converter is proposed in this paper. This configuration maintains system stability under different input/output voltages without changing the inductor and compensation circuit. The dynamic ramp can be adjusted according to the variation in the output voltage or the voltage droop between the input voltage and the output voltage to maintain bandwidth and phase margin using the invariant inductor and compensation circuit. Finally, 14-V input voltage, 12-V output voltage, and 24-W output power with the dynamic ramp sampling the output voltage is implemented using MathCAD predictions, SIMPLIS simulation results, and experimental results to verify its viability and superiority.",

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AU - Ting, Wei Yuan

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AB - Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip Buck converter is proposed in this paper. This configuration maintains system stability under different input/output voltages without changing the inductor and compensation circuit. The dynamic ramp can be adjusted according to the variation in the output voltage or the voltage droop between the input voltage and the output voltage to maintain bandwidth and phase margin using the invariant inductor and compensation circuit. Finally, 14-V input voltage, 12-V output voltage, and 24-W output power with the dynamic ramp sampling the output voltage is implemented using MathCAD predictions, SIMPLIS simulation results, and experimental results to verify its viability and superiority.

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Designing a dynamic ramp with an invariant inductor in current-mode control for an on-chip buck converter

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