Details
| Original language | English |
|---|---|
| Title of host publication | 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 1742-1745 |
| Number of pages | 4 |
| ISBN (electronic) | 9781479983919 |
| Publication status | Published - 27 Jul 2015 |
| Externally published | Yes |
| Event | IEEE International Symposium on Circuits and Systems, ISCAS 2015 - Lisbon, Portugal Duration: 24 May 2015 → 27 May 2015 |
Publication series
| Name | Proceedings - IEEE International Symposium on Circuits and Systems |
|---|---|
| Volume | 2015-July |
| ISSN (Print) | 0271-4310 |
Abstract
Fast switching power supplies allow to reduce the size and cost of external passive components. However, the capacitive switching losses of the power stage will increase and become the dominant part of the total losses. Therefore, resonant topologies are the known key to reduce the losses of the power stage. A power switch with an additional resonant circuit can be turned on under soft-switching conditions, ideally with zero-voltage-switching (ZVS). As conventional resonant converts are only efficient for a constant load, this paper presents a predictive regulation loop to approach soft-switching conditions under varying load and component tolerances. A sample and hold based detection circuit is utilized to control the turn-on of the power switch by a digital regulation. The proposed design was fabricated in a 180 nm high-voltage BiCMOS technology. The efficiency of the converter was measured to be increased by up to 16 % vs. worst case timing and by 13 % compared to a conventional hard-switching buck converter at 20 V input voltage and at approximately 8 MHz switching frequency.
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 1742-1745 7168990 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2015-July).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - A 20 V, 8 MHz resonant DCDC converter with predictive control for 1 ns resolution soft-switching
AU - Funk, Tobias
AU - Wittmann, Juergen
AU - Rosahl, Thoralf
AU - Wicht, Bernhard
N1 - Publisher Copyright: © 2015 IEEE.
PY - 2015/7/27
Y1 - 2015/7/27
N2 - Fast switching power supplies allow to reduce the size and cost of external passive components. However, the capacitive switching losses of the power stage will increase and become the dominant part of the total losses. Therefore, resonant topologies are the known key to reduce the losses of the power stage. A power switch with an additional resonant circuit can be turned on under soft-switching conditions, ideally with zero-voltage-switching (ZVS). As conventional resonant converts are only efficient for a constant load, this paper presents a predictive regulation loop to approach soft-switching conditions under varying load and component tolerances. A sample and hold based detection circuit is utilized to control the turn-on of the power switch by a digital regulation. The proposed design was fabricated in a 180 nm high-voltage BiCMOS technology. The efficiency of the converter was measured to be increased by up to 16 % vs. worst case timing and by 13 % compared to a conventional hard-switching buck converter at 20 V input voltage and at approximately 8 MHz switching frequency.
AB - Fast switching power supplies allow to reduce the size and cost of external passive components. However, the capacitive switching losses of the power stage will increase and become the dominant part of the total losses. Therefore, resonant topologies are the known key to reduce the losses of the power stage. A power switch with an additional resonant circuit can be turned on under soft-switching conditions, ideally with zero-voltage-switching (ZVS). As conventional resonant converts are only efficient for a constant load, this paper presents a predictive regulation loop to approach soft-switching conditions under varying load and component tolerances. A sample and hold based detection circuit is utilized to control the turn-on of the power switch by a digital regulation. The proposed design was fabricated in a 180 nm high-voltage BiCMOS technology. The efficiency of the converter was measured to be increased by up to 16 % vs. worst case timing and by 13 % compared to a conventional hard-switching buck converter at 20 V input voltage and at approximately 8 MHz switching frequency.
UR - http://www.scopus.com/inward/record.url?scp=84946239428&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2015.7168990
DO - 10.1109/ISCAS.2015.7168990
M3 - Conference contribution
AN - SCOPUS:84946239428
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1742
EP - 1745
BT - 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Symposium on Circuits and Systems, ISCAS 2015
Y2 - 24 May 2015 through 27 May 2015
ER -