Near-Optimum Dynamic Regulation of DC-DC Converters Using Feed-Forward of Output Current and Input Voltage with Current-Mode Control

Load-Line Regulation With Estimated Load-Current Feedforward: Application to Microprocessor Voltage Regulators

“…On the other hand, if a large inductor is used, the output capacitor has to be Manuscript received January 4, 2005; revised September 8, 2005. This work was presented in part at the Power Electronics Specialists Conference (PESC), Aachen, Germany, June [20][21][22][23][24][25]2004. This work was supported by the National Science Foundation under Grant ECS-0323615 and by the University of California Micro Program.…”

“…Proposed multiphase hysteretic architectures [22], [23] appear to have high sensitivity to noise, as well, due to the small amplitude of the ripple signals. Finally, load-current feedforward has been used to speed up the transient response in current-mode converters with stiff voltage regulation [5], [24]. However, in [5] it is suggested that fast feedback compensation can match the performance of load-current feedforward.…”

<inline-formula><tex-math notation="LaTeX">$v^1$</tex-math></inline-formula> Concept: Designing a Voltage-Mode Control as Current Mode With Near Time-Optimal Response for Buck-Type Converters

“…This control is named v 2 i c (or "current-mode control of the output capacitor current" in a previous version from 2010 [9]). Using the capacitor current to improve the dynamic response is not a new concept since it dates back at least to 1986 [10], but [6] improves the idea by using a simple lossless sensor of the capacitor that only measures the output voltage and that takes into account the ESL of the output capacitor. In 2013, Yan et al [11] proposed the same concept with a different implementation of the sensor of the current.…”

Overview, equivalences and design guidelines of v¹ concept: A voltage mode control that behaves as a current-mode with near time-optimal response

“…This control is named v 2 i c (or "current-mode control of the output capacitor current" in a previous version from 2010 [9]). Using the capacitor current to improve the dynamic response is not a new concept since it dates back at least to 1986 [10], but [6] improves the idea by using a simple lossless sensor of the capacitor that only measures the output voltage and that takes into account the ESL of the output capacitor. In 2013, [11] proposed the same concept with a different implementation of the sensor of the current.…”