Low power integrated on-chip current to digital converter

Edgar Marti-Arbona; Debashis Mandal; Bertan Bakkaloglu; Sayfe Kiaei

doi:10.1109/APEC.2015.7104419

Low power integrated on-chip current to digital converter

Edgar Marti-Arbona, Debashis Mandal, Bertan Bakkaloglu, Sayfe Kiaei

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

Integrated and efficient maximum power point tracking (MPPT) is a critical need in the photo-voltaic power generation system. One of the key components of the MPPT is current and power sensor. This paper presents a low-power integrated current sensor implemented in standard low-voltage CMOS technology. The proposed current sensor is a current-to-digital converter circuit, removing the need for an additional analog-to-digital converter for current digitization. The proposed PV MPPT circuit measures the current information from the DC-DC converter output ripple by charging and discharging a set of capacitive nodes, resulting in a digital current measurement for the MPPT circuit. The MPPT circuit along with the integrated circuit is presented. The current sensor is fabricated in a 0.7 micron CMOS technology and covers less than 4 mm2 of silicon area. The sensor power consumption is less than 27 mW, and provides an 8-bits digital representation of the converter load current with less than 0.4% error.

Original language	English (US)
Title of host publication	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	654-657
Number of pages	4
Volume	2015-May
Edition	May
DOIs	https://doi.org/10.1109/APEC.2015.7104419
State	Published - May 8 2015
Event	30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States Duration: Mar 15 2015 → Mar 19 2015

Other

Other	30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
Country/Territory	United States
City	Charlotte
Period	3/15/15 → 3/19/15

Keywords

Current sensor
Data converter
DC-DC converter
MPPT
PV

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/APEC.2015.7104419

Cite this

Low power integrated on-chip current to digital converter. / Marti-Arbona, Edgar; Mandal, Debashis; Bakkaloglu, Bertan ; Kiaei, Sayfe.

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC. Vol. 2015-May May. ed. Institute of Electrical and Electronics Engineers Inc., 2015. p. 654-657 7104419.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Marti-Arbona, E, Mandal, D, Bakkaloglu, B & Kiaei, S 2015, Low power integrated on-chip current to digital converter. in Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC. May edn, vol. 2015-May, 7104419, Institute of Electrical and Electronics Engineers Inc., pp. 654-657, 30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015, Charlotte, United States, 3/15/15. https://doi.org/10.1109/APEC.2015.7104419

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abstract = "Integrated and efficient maximum power point tracking (MPPT) is a critical need in the photo-voltaic power generation system. One of the key components of the MPPT is current and power sensor. This paper presents a low-power integrated current sensor implemented in standard low-voltage CMOS technology. The proposed current sensor is a current-to-digital converter circuit, removing the need for an additional analog-to-digital converter for current digitization. The proposed PV MPPT circuit measures the current information from the DC-DC converter output ripple by charging and discharging a set of capacitive nodes, resulting in a digital current measurement for the MPPT circuit. The MPPT circuit along with the integrated circuit is presented. The current sensor is fabricated in a 0.7 micron CMOS technology and covers less than 4 mm2 of silicon area. The sensor power consumption is less than 27 mW, and provides an 8-bits digital representation of the converter load current with less than 0.4% error.",

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author = "Edgar Marti-Arbona and Debashis Mandal and Bertan Bakkaloglu and Sayfe Kiaei",

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Y1 - 2015/5/8

N2 - Integrated and efficient maximum power point tracking (MPPT) is a critical need in the photo-voltaic power generation system. One of the key components of the MPPT is current and power sensor. This paper presents a low-power integrated current sensor implemented in standard low-voltage CMOS technology. The proposed current sensor is a current-to-digital converter circuit, removing the need for an additional analog-to-digital converter for current digitization. The proposed PV MPPT circuit measures the current information from the DC-DC converter output ripple by charging and discharging a set of capacitive nodes, resulting in a digital current measurement for the MPPT circuit. The MPPT circuit along with the integrated circuit is presented. The current sensor is fabricated in a 0.7 micron CMOS technology and covers less than 4 mm2 of silicon area. The sensor power consumption is less than 27 mW, and provides an 8-bits digital representation of the converter load current with less than 0.4% error.

AB - Integrated and efficient maximum power point tracking (MPPT) is a critical need in the photo-voltaic power generation system. One of the key components of the MPPT is current and power sensor. This paper presents a low-power integrated current sensor implemented in standard low-voltage CMOS technology. The proposed current sensor is a current-to-digital converter circuit, removing the need for an additional analog-to-digital converter for current digitization. The proposed PV MPPT circuit measures the current information from the DC-DC converter output ripple by charging and discharging a set of capacitive nodes, resulting in a digital current measurement for the MPPT circuit. The MPPT circuit along with the integrated circuit is presented. The current sensor is fabricated in a 0.7 micron CMOS technology and covers less than 4 mm2 of silicon area. The sensor power consumption is less than 27 mW, and provides an 8-bits digital representation of the converter load current with less than 0.4% error.

KW - Current sensor

KW - Data converter

KW - DC-DC converter

KW - MPPT

KW - PV

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ER -

Low power integrated on-chip current to digital converter

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Keywords

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