A Simple LDO with Adaptive Bias for IoT Applications IEEE-ISCAS-2017 USA

Igor Filanovsky; Luis  Oliveira; Nikolay Tchamov; Vadim Ivanov

doi:10.1109/ISCAS.2017.8050540

A Simple LDO with Adaptive Bias for IoT Applications IEEE-ISCAS-2017 USA

Igor Filanovsky, Luis Oliveira, Nikolay Tchamov, Vadim Ivanov

Tutkimustuotos: Konferenssiartikkeli › Tieteellinen › vertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

A new transistor model is used for design of two LDO regulators using a differential stage loaded by a current amplifier and the voltage feedback. The first LDO has a constant bias current, the second LDO has an additional adaptable bias circuit controlled by the load current. The LDOs are analyzed and compared. When the load is absent, the transistors in both circuits are operating in weak inversion; when the load is increasing the pass transistors in both circuits are moving to strong inversion. It is shown that in these LDOs the output voltage may be higher than the input reference voltage at very small load currents, and the circuits start “to follow” the input voltage only being loaded with a load current depending on the bias and LDO loop gain. The circuits were designed for 130 nm CMOS technology and their operation was verified using CADENCE simulation tool.

Alkuperäiskieli	Englanti
Otsikko	2017 IEEE International Symposium on Circuits and Systems (ISCAS)
Kustantaja	IEEE
ISBN (elektroninen)	978-1-4673-6853-7
DOI - pysyväislinkit	https://doi.org/10.1109/ISCAS.2017.8050540
Tila	Julkaistu - 28 toukok. 2017
OKM-julkaisutyyppi	A4 Artikkeli konferenssijulkaisussa
Tapahtuma	IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - Kesto: 1 tammik. 1900 → …

Conference

Conference	IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS
Ajanjakso	1/01/00 → …

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10.1109/ISCAS.2017.8050540

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@inproceedings{7dd78fa001c24b0db81273f20c34bc1c,

title = "A Simple LDO with Adaptive Bias for IoT Applications IEEE-ISCAS-2017 USA",

abstract = "A new transistor model is used for design of two LDO regulators using a differential stage loaded by a current amplifier and the voltage feedback. The first LDO has a constant bias current, the second LDO has an additional adaptable bias circuit controlled by the load current. The LDOs are analyzed and compared. When the load is absent, the transistors in both circuits are operating in weak inversion; when the load is increasing the pass transistors in both circuits are moving to strong inversion. It is shown that in these LDOs the output voltage may be higher than the input reference voltage at very small load currents, and the circuits start “to follow” the input voltage only being loaded with a load current depending on the bias and LDO loop gain. The circuits were designed for 130 nm CMOS technology and their operation was verified using CADENCE simulation tool.",

author = "Igor Filanovsky and Luis Oliveira and Nikolay Tchamov and Vadim Ivanov",

year = "2017",

month = may,

day = "28",

doi = "10.1109/ISCAS.2017.8050540",

language = "English",

booktitle = "2017 IEEE International Symposium on Circuits and Systems (ISCAS)",

publisher = "IEEE",

address = "United States",

note = "IEEE International Symposium on Circuits and Systems ; Conference date: 01-01-1900",

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TY - GEN

T1 - A Simple LDO with Adaptive Bias for IoT Applications IEEE-ISCAS-2017 USA

AU - Filanovsky, Igor

AU - Oliveira, Luis

AU - Tchamov, Nikolay

AU - Ivanov, Vadim

PY - 2017/5/28

Y1 - 2017/5/28

N2 - A new transistor model is used for design of two LDO regulators using a differential stage loaded by a current amplifier and the voltage feedback. The first LDO has a constant bias current, the second LDO has an additional adaptable bias circuit controlled by the load current. The LDOs are analyzed and compared. When the load is absent, the transistors in both circuits are operating in weak inversion; when the load is increasing the pass transistors in both circuits are moving to strong inversion. It is shown that in these LDOs the output voltage may be higher than the input reference voltage at very small load currents, and the circuits start “to follow” the input voltage only being loaded with a load current depending on the bias and LDO loop gain. The circuits were designed for 130 nm CMOS technology and their operation was verified using CADENCE simulation tool.

AB - A new transistor model is used for design of two LDO regulators using a differential stage loaded by a current amplifier and the voltage feedback. The first LDO has a constant bias current, the second LDO has an additional adaptable bias circuit controlled by the load current. The LDOs are analyzed and compared. When the load is absent, the transistors in both circuits are operating in weak inversion; when the load is increasing the pass transistors in both circuits are moving to strong inversion. It is shown that in these LDOs the output voltage may be higher than the input reference voltage at very small load currents, and the circuits start “to follow” the input voltage only being loaded with a load current depending on the bias and LDO loop gain. The circuits were designed for 130 nm CMOS technology and their operation was verified using CADENCE simulation tool.

U2 - 10.1109/ISCAS.2017.8050540

DO - 10.1109/ISCAS.2017.8050540

M3 - Conference contribution

BT - 2017 IEEE International Symposium on Circuits and Systems (ISCAS)

PB - IEEE

T2 - IEEE International Symposium on Circuits and Systems

Y2 - 1 January 1900

ER -

A Simple LDO with Adaptive Bias for IoT Applications IEEE-ISCAS-2017 USA

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Conference

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