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 language | English |
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Pages | 1241-1247 |
Number of pages | 7 |
DOIs | |
State | Published - 1 Jan 2022 |
Event | 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 - Houston, United States Duration: 20 Mar 2022 → 24 Mar 2022 |
Conference
Conference | 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 |
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Country/Territory | United States |
City | Houston |
Period | 20/03/22 → 24/03/22 |
Keywords
- DDR
- Digital control
- VRM
- buck
- hybrid control
- multiphase
ASJC Scopus subject areas
- Electrical and Electronic Engineering