Open AccessDigital pulse‐width modulation controller based on fully table look‐up for system‐on‐a‐chip applications
Author(s) -
Tu Steve HungLung,
Chiu Morris M.H.
Publication year - 2013
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2012.0659
Subject(s) - pulse width modulation , comparator , chip , pid controller , controller (irrigation) , lookup table , computer science , electronic engineering , control unit , digital control , modulation (music) , table (database) , interface (matter) , delta sigma modulation , computer hardware , engineering , electrical engineering , parallel computing , voltage , cmos , control engineering , temperature control , telecommunications , agronomy , philosophy , bubble , maximum bubble pressure method , data mining , biology , programming language , aesthetics
Design and implementation of a fully table look‐up digital pulse‐width modulation (DPWM) controller for high‐frequency DC–DC buck conversion is presented. The controller comprises a 1 bit analogue comparator, a digital error process unit and a fully table look‐up multi‐phase DPWM. The interface of analogue‐to‐digital conversion is performed with the analogue comparator. Moreover, the proposed programmable memory is based on the table look‐up multi‐phase approach for the functions of the proportional‐integral‐derivative (PID) compensation, which alleviates the penalty of using large chip‐area multipliers. As a result, the approach is very suitable for system‐on‐a‐chip (SOC) implementation. A prototype test chip is realised to validate the mechanism of the proposed architecture.