RT Journal Article
T1 Field-programmable gate array-based linear-non-linear control with high-resolution digital pulse width modulator and high-speed embedded analogue-to-digital converter for multi-phase voltage regulator modules
A1 Sanz García, Clara Marina
A1 Quintero Paredes, José de Jesús
A1 Barrado Bautista, Andrés
A1 Fernández Herrero, Cristina
A1 Zumel Vaquero, Pablo
A1 Lázaro Blanco, Antonio
AB Power converters for applications with high switching frequency and tight output voltage regulation such as voltage regulator modules (VRM) for microprocessors power supplies require fast dynamic response to meet the specifications. An existing control technique known as linear-non-linear (LnL) control strategy allows improving the transient converter response by means of an easy rule for the saturation of the duty cycle. The use of a digital implementation can optimise the transient response of the multi-phase VRM with LnL. However, digital control leads to other problems derived from time discretisation and finite word length effects. The limited resolution and the sampling delay are critical issues for digital control implementation of multi-phase VRM with LnL control. As a result, a high-resolution digital pulse width modulator (DPWM) and high-speed analogue-to-digital (A/D) converter are required to obtain proper performance of the converter. This study is focused on the digital implementation of the well-known LnL control in a multi-phase VRM taking advantage of low-cost field-programmable gate array resources. A detailed description of the digital implementation of the main converter control blocks, which are the A/D converter, the compensator and the DPWM, is provided in the paper.
PB Wiley
SN 1755-4535
YR 2014
FD 2014-08
LK https://hdl.handle.net/10016/37252
UL https://hdl.handle.net/10016/37252
LA eng
NO This work was supported in part by the Spanish Ministry of Science and Innovation through the research projects SAUCE (DPI2009-12501) and MODU-FLAME (DPI2010-21110-C02-02)
DS e-Archivo
RD 1 jul. 2024