Transient Suppression Scheme for Mitigation of High-Performance VRM Intricate Load Profiles

Bar Halivni, Tom Urkin, Mor Mordechai Peretz

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper introduces a non-linear control scheme that supports near ideal transient recovery for high-frequency high-di/dt load-transients that exceed the control bandwidth in single-phase and multiphase buck converter VRMs. The new algorithm adapts the switching sequence for recovery using information obtained from a simple, plug-and-play, comparator-based observer of the output voltage. Detailed control algorithm is provided as well as implementation considerations for high-performance multiphase VRMs. The new control method is demonstrated via simulation on a multiphase VRM for complex load-profiles. Experimental verification has been carried out by intel certified-hardware of DDR4 emulation modules on a 12V-to-l.2V 120W multiphase buck VRM accommodating 80A load transients.

Original languageEnglish
Pages1241-1247
Number of pages7
DOIs
StatePublished - 1 Jan 2022
Event37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 - Houston, United States
Duration: 20 Mar 202224 Mar 2022

Conference

Conference37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022
Country/TerritoryUnited States
CityHouston
Period20/03/2224/03/22

Keywords

  • buck
  • DDR
  • Digital control
  • hybrid control
  • multiphase
  • VRM

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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