Bi-directional high-side current sense circuit for switch mode power supplies

Marzieh Ekhtiari; Erik Bruun; Michael A. E. Andersen; Zhe Zhang

doi:10.1109/ICECS.2014.7050064

Bi-directional high-side current sense circuit for switch mode power supplies

Marzieh Ekhtiari
, Erik Bruun
, Michael A. E. Andersen
, Zhe Zhang

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

In order to control a power supply using piezoelectric transformer, AC current in the transformer ne eds to be measured. Due to the control strategy it is necessary to measure amplitude, phase angle and zero crossing of this c urrent. In some applications there is common ground between pri mary and secondary sides of the transformer which is internally implemented inside the transformer. Therefore, curren t must be measured from the high voltage line in the presence of hig h input switching voltage. This paper proposes a resistive current s ensing circuit based on discrete components useful for input voltage s on the order of 200 V. The bandwidth is at least 200 kHz to allow fundamental frequency detection of piezoelectric transformers in use.

Original language	English
Title of host publication	Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition
Publisher	IEEE
Publication date	2014
Pages	630-633
ISBN (Print)	978-1-4799-4242-8
DOIs	https://doi.org/10.1109/ICECS.2014.7050064
Publication status	Published - 2014
Event	2014 IEEE Applied Power Electronics Conference and Exposition - Fort Worth Convention Center , Fort Worth, United States Duration: 16 Mar 2014 → 20 Mar 2014 Conference number: 29 https://apec-conf.org/uploads/documents/APEC2014pocketv1feb15.pdf

Conference

Conference	2014 IEEE Applied Power Electronics Conference and Exposition
Number	29
Location	Fort Worth Convention Center
Country/Territory	United States
City	Fort Worth
Period	16/03/2014 → 20/03/2014
Internet address	https://apec-conf.org/uploads/documents/APEC2014pocketv1feb15.pdf

Keywords

High side current sense
Resisitive curren t sense,
High common mode voltage
Piezoelectric transformer

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10.1109/ICECS.2014.7050064

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@inproceedings{84c66b860d6440e4a457f349015496b1,

title = "Bi-directional high-side current sense circuit for switch mode power supplies",

abstract = "In order to control a power supply using piezoelectric transformer, AC current in the transformer ne eds to be measured. Due to the control strategy it is necessary to measure amplitude, phase angle and zero crossing of this c urrent. In some applications there is common ground between pri mary and secondary sides of the transformer which is internally implemented inside the transformer. Therefore, curren t must be measured from the high voltage line in the presence of hig h input switching voltage. This paper proposes a resistive current s ensing circuit based on discrete components useful for input voltage s on the order of 200 V. The bandwidth is at least 200 kHz to allow fundamental frequency detection of piezoelectric transformers in use. ",

keywords = "High side current sense, Resisitive curren t sense,, High common mode voltage, Piezoelectric transformer",

author = "Marzieh Ekhtiari and Erik Bruun and Andersen, \{Michael A. E.\} and Zhe Zhang",

year = "2014",

doi = "10.1109/ICECS.2014.7050064",

language = "English",

isbn = "978-1-4799-4242-8",

pages = "630--633",

booktitle = "Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition",

publisher = "IEEE",

address = "United States",

note = "2014 IEEE Applied Power Electronics Conference and Exposition , APEC 2014 ; Conference date: 16-03-2014 Through 20-03-2014",

url = "https://apec-conf.org/uploads/documents/APEC2014pocketv1feb15.pdf",

}

Ekhtiari, M, Bruun, E, Andersen, MAE & Zhang, Z 2014, Bi-directional high-side current sense circuit for switch mode power supplies. in Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition. IEEE, pp. 630-633, 2014 IEEE Applied Power Electronics Conference and Exposition , Fort Worth, Texas, United States, 16/03/2014. https://doi.org/10.1109/ICECS.2014.7050064

Bi-directional high-side current sense circuit for switch mode power supplies. / Ekhtiari, Marzieh; Bruun, Erik; Andersen, Michael A. E. et al.
Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition. IEEE, 2014. p. 630-633.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Bi-directional high-side current sense circuit for switch mode power supplies

AU - Ekhtiari, Marzieh

AU - Bruun, Erik

AU - Andersen, Michael A. E.

AU - Zhang, Zhe

N1 - Conference code: 29

PY - 2014

Y1 - 2014

N2 - In order to control a power supply using piezoelectric transformer, AC current in the transformer ne eds to be measured. Due to the control strategy it is necessary to measure amplitude, phase angle and zero crossing of this c urrent. In some applications there is common ground between pri mary and secondary sides of the transformer which is internally implemented inside the transformer. Therefore, curren t must be measured from the high voltage line in the presence of hig h input switching voltage. This paper proposes a resistive current s ensing circuit based on discrete components useful for input voltage s on the order of 200 V. The bandwidth is at least 200 kHz to allow fundamental frequency detection of piezoelectric transformers in use.

AB - In order to control a power supply using piezoelectric transformer, AC current in the transformer ne eds to be measured. Due to the control strategy it is necessary to measure amplitude, phase angle and zero crossing of this c urrent. In some applications there is common ground between pri mary and secondary sides of the transformer which is internally implemented inside the transformer. Therefore, curren t must be measured from the high voltage line in the presence of hig h input switching voltage. This paper proposes a resistive current s ensing circuit based on discrete components useful for input voltage s on the order of 200 V. The bandwidth is at least 200 kHz to allow fundamental frequency detection of piezoelectric transformers in use.

KW - High side current sense

KW - Resisitive curren t sense,

KW - High common mode voltage

KW - Piezoelectric transformer

U2 - 10.1109/ICECS.2014.7050064

DO - 10.1109/ICECS.2014.7050064

M3 - Article in proceedings

SN - 978-1-4799-4242-8

SP - 630

EP - 633

BT - Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition

PB - IEEE

T2 - 2014 IEEE Applied Power Electronics Conference and Exposition

Y2 - 16 March 2014 through 20 March 2014

ER -

Bi-directional high-side current sense circuit for switch mode power supplies

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Conference

Keywords

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