A 10A/μs Fast Transient AOT Voltage Regulator on DDR5 DIMM with Dithered Pseudo-Constant Switching Frequency Achieving -6dB Harmonic Suppression

The on-board voltage regulator in the DDR5 memory module is required to resiliently supply current at large load transient events and alleviate output noise at the same time. We present an adaptive on-time (AOT) buck regulator with a turbo dual-phase interleaving logic for stable regulation and on-t...

Full description

Saved in:
Bibliographic Details
Published in2021 Symposium on VLSI Circuits pp. 1 - 2
Main Authors Chung, Taeyoung, Kim, Sooa, Yoon, Jehyung, Han, Heeseok, Park, Kyung Soo, Lee, Hokyu, Yoon, Ho-Young, Lee, Sun-Kyu, Lim, Jongyoon, Kwon, Yongjin, Lee, Jungbong, Kwak, Sung-Ung
Format Conference Proceeding
LanguageEnglish
Published JSAP 13.06.2021
Subjects
Adaptive on-time
Control systems
DDR5
Harmonic analysis
harmonic suppression and fast transient
Harmonics suppression
Memory modules
Regulators
Switching frequency
Very large scale integration
voltage regulator
Online AccessGet full text

Cover

More Information
Summary:The on-board voltage regulator in the DDR5 memory module is required to resiliently supply current at large load transient events and alleviate output noise at the same time. We present an adaptive on-time (AOT) buck regulator with a turbo dual-phase interleaving logic for stable regulation and on-time control with dithered pseudo-constant switching frequency to suppress output harmonics by 6dB. The voltage regulator delivers up to 10A with a peak efficiency of 92.5% and covers 10A/μs steep load transients.
ISSN:2158-5636
DOI:10.23919/VLSICircuits52068.2021.9492332