Details
| Original language | English |
|---|---|
| Title of host publication | 2016 IEEE 59th International Midwest Symposium on Circuits and Systems, MWSCAS 2016 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9781509009169 |
| Publication status | Published - 2 Jul 2016 |
| Externally published | Yes |
| Event | 59th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2016 - Abu Dhabi, United Arab Emirates Duration: 16 Oct 2016 → 19 Oct 2016 |
Publication series
| Name | Midwest Symposium on Circuits and Systems |
|---|---|
| Volume | 0 |
| ISSN (Print) | 1548-3746 |
Abstract
A high-voltage replica based current sensor is presented, along with challenges and design techniques which are rarely discussed in literature so far. The performance is evaluated by detailed small signal and large signal analysis. By dedicated placing of high-voltage cascode devices, while keeping as many low-voltage devices as possible, a high gain-bandwidth product is achieved. A decoupling and biasing circuit is introduced which improves the response time of the current sensor at on/off transitions by a factor of five. The current sensor is implemented in a 180nm HV BiCMOS technology. The sensor achieves a DC loop gain of 83 dB and a gain-bandwidth product of 7 MHz. With the proposed techniques, the gain-bandwidth product is increased by a factor of six. The measurable current range is between 60mA and 1.5 A. The performance is demonstrated in a 500 kHz buck converter at an input voltage of 40V. The overall circuit concept is suitable for 100V and beyond, enabling high performance power management designs including switched mode power supplies and motor applications.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Engineering(all)
- Electrical and Electronic Engineering
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2016 IEEE 59th International Midwest Symposium on Circuits and Systems, MWSCAS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7870011 (Midwest Symposium on Circuits and Systems; Vol. 0).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - A 40V current sensing circuit with fast on/off transition for high-voltage power management
AU - Renz, Peter
AU - Lamprecht, Philipp
AU - Teufel, Daniel
AU - Wicht, Bernhard
N1 - Publisher Copyright: © 2016 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2016/7/2
Y1 - 2016/7/2
N2 - A high-voltage replica based current sensor is presented, along with challenges and design techniques which are rarely discussed in literature so far. The performance is evaluated by detailed small signal and large signal analysis. By dedicated placing of high-voltage cascode devices, while keeping as many low-voltage devices as possible, a high gain-bandwidth product is achieved. A decoupling and biasing circuit is introduced which improves the response time of the current sensor at on/off transitions by a factor of five. The current sensor is implemented in a 180nm HV BiCMOS technology. The sensor achieves a DC loop gain of 83 dB and a gain-bandwidth product of 7 MHz. With the proposed techniques, the gain-bandwidth product is increased by a factor of six. The measurable current range is between 60mA and 1.5 A. The performance is demonstrated in a 500 kHz buck converter at an input voltage of 40V. The overall circuit concept is suitable for 100V and beyond, enabling high performance power management designs including switched mode power supplies and motor applications.
AB - A high-voltage replica based current sensor is presented, along with challenges and design techniques which are rarely discussed in literature so far. The performance is evaluated by detailed small signal and large signal analysis. By dedicated placing of high-voltage cascode devices, while keeping as many low-voltage devices as possible, a high gain-bandwidth product is achieved. A decoupling and biasing circuit is introduced which improves the response time of the current sensor at on/off transitions by a factor of five. The current sensor is implemented in a 180nm HV BiCMOS technology. The sensor achieves a DC loop gain of 83 dB and a gain-bandwidth product of 7 MHz. With the proposed techniques, the gain-bandwidth product is increased by a factor of six. The measurable current range is between 60mA and 1.5 A. The performance is demonstrated in a 500 kHz buck converter at an input voltage of 40V. The overall circuit concept is suitable for 100V and beyond, enabling high performance power management designs including switched mode power supplies and motor applications.
UR - http://www.scopus.com/inward/record.url?scp=85015931713&partnerID=8YFLogxK
U2 - 10.1109/mwscas.2016.7870011
DO - 10.1109/mwscas.2016.7870011
M3 - Conference contribution
AN - SCOPUS:85015931713
T3 - Midwest Symposium on Circuits and Systems
BT - 2016 IEEE 59th International Midwest Symposium on Circuits and Systems, MWSCAS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 59th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2016
Y2 - 16 October 2016 through 19 October 2016
ER -