Fully-integrated digital average current-mode control 12V-to-1.xV voltage regulator module IC

Timur Vekslender, Eli Abramov, Yevgeny Lazarev, Mor Mordechai Peretz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper introduces a fully-integrated 12-to-1.xV voltage regulator module IC. A fully synthesizable digital two-loop controller has been realized through HDL tools. Several new IP blocks have been developed: a window delay-line based ADC, two independent PI compensators with shared hardware for calculations, high-resolution digital PWM (HR-DPWM), and a programmable dead-time module. The mixed-signal IC has been fabricated on a 0.18μm 5V CMOS process. It incorporates the digital core and a synchronous rectifier power-stage, including a drive circuitry operating at 1.25MHz with the ability to deliver up to 10W from 12V input. The digital core has been realized by an automated synthesis process and place-and route tools, resulting in effective silicon area of 0.16mm2. Post-layout and experimental results of the fabricated IC operating in closed-loop are provided, demonstrating the performance and benefits of the new controller for meeting the requirements of tight output voltage regulation.

Original languageAmerican English
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Pages2043-2050
Number of pages8
ISBN (Electronic)9781509053667
DOIs
StatePublished - 17 May 2017
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Country/TerritoryUnited States
CityTampa
Period26/03/1730/03/17

Keywords

  • Average current mode control
  • DC-DC converters
  • Digital control
  • PWM
  • Power management IC
  • Voltage regulator module

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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