Design of a 300-Watt Isolated Power Supply for Ultra-Fast Tracking Converters

Khiem Nguyen-Duy, Ziwei Ouyang, Lars Press Petersen, Arnold Knott, Ole Cornelius Thomsen, Michael A. E. Andersen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper presents the design of a medium-powerrating isolated power supply for ultra-fast tracking converters and MOS-gate driver circuits in medium and high voltage applications. The key feature of the design is its very low circuit input-to-output parasitic capacitance, which maximizes its noise immunity from noise due to fast changes in voltage. The converter is a voltage-controlled current source, utilizing a transformer with extremely low inter-winding parasitic capacitance, which is achieved by separating the windings by a significant distance. Experimental measurements show that an overall circuit input-to-output parasitic capacitance of 10 pF in a 300 W prototype can be achieved. The circuit input-to-output capacitance per watt is therefore 30 times lower than that of existing approaches. A mathematical model of the inter-winding capacitance of the proposed transformer, circuit analysis, and experimental results are provided to prove the feasibility of the converter.
Original languageEnglish
JournalI E E E Transactions on Power Electronics
Volume30
Issue number6
Pages (from-to)3319-3333
Number of pages15
ISSN0885-8993
DOIs
Publication statusPublished - 2015

Keywords

  • Current transformers
  • Parasitic capacitance
  • Switching converters
  • Stacking
  • Dc-dc power converters

Cite this

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title = "Design of a 300-Watt Isolated Power Supply for Ultra-Fast Tracking Converters",
abstract = "This paper presents the design of a medium-powerrating isolated power supply for ultra-fast tracking converters and MOS-gate driver circuits in medium and high voltage applications. The key feature of the design is its very low circuit input-to-output parasitic capacitance, which maximizes its noise immunity from noise due to fast changes in voltage. The converter is a voltage-controlled current source, utilizing a transformer with extremely low inter-winding parasitic capacitance, which is achieved by separating the windings by a significant distance. Experimental measurements show that an overall circuit input-to-output parasitic capacitance of 10 pF in a 300 W prototype can be achieved. The circuit input-to-output capacitance per watt is therefore 30 times lower than that of existing approaches. A mathematical model of the inter-winding capacitance of the proposed transformer, circuit analysis, and experimental results are provided to prove the feasibility of the converter.",
keywords = "Current transformers, Parasitic capacitance, Switching converters, Stacking, Dc-dc power converters",
author = "Khiem Nguyen-Duy and Ziwei Ouyang and Petersen, {Lars Press} and Arnold Knott and Thomsen, {Ole Cornelius} and Andersen, {Michael A. E.}",
year = "2015",
doi = "10.1109/TPEL.2014.2338834",
language = "English",
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pages = "3319--3333",
journal = "I E E E Transactions on Power Electronics",
issn = "0885-8993",
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Design of a 300-Watt Isolated Power Supply for Ultra-Fast Tracking Converters. / Nguyen-Duy, Khiem; Ouyang, Ziwei; Petersen, Lars Press; Knott, Arnold; Thomsen, Ole Cornelius; Andersen, Michael A. E.

In: I E E E Transactions on Power Electronics, Vol. 30, No. 6, 2015, p. 3319-3333.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Design of a 300-Watt Isolated Power Supply for Ultra-Fast Tracking Converters

AU - Nguyen-Duy, Khiem

AU - Ouyang, Ziwei

AU - Petersen, Lars Press

AU - Knott, Arnold

AU - Thomsen, Ole Cornelius

AU - Andersen, Michael A. E.

PY - 2015

Y1 - 2015

N2 - This paper presents the design of a medium-powerrating isolated power supply for ultra-fast tracking converters and MOS-gate driver circuits in medium and high voltage applications. The key feature of the design is its very low circuit input-to-output parasitic capacitance, which maximizes its noise immunity from noise due to fast changes in voltage. The converter is a voltage-controlled current source, utilizing a transformer with extremely low inter-winding parasitic capacitance, which is achieved by separating the windings by a significant distance. Experimental measurements show that an overall circuit input-to-output parasitic capacitance of 10 pF in a 300 W prototype can be achieved. The circuit input-to-output capacitance per watt is therefore 30 times lower than that of existing approaches. A mathematical model of the inter-winding capacitance of the proposed transformer, circuit analysis, and experimental results are provided to prove the feasibility of the converter.

AB - This paper presents the design of a medium-powerrating isolated power supply for ultra-fast tracking converters and MOS-gate driver circuits in medium and high voltage applications. The key feature of the design is its very low circuit input-to-output parasitic capacitance, which maximizes its noise immunity from noise due to fast changes in voltage. The converter is a voltage-controlled current source, utilizing a transformer with extremely low inter-winding parasitic capacitance, which is achieved by separating the windings by a significant distance. Experimental measurements show that an overall circuit input-to-output parasitic capacitance of 10 pF in a 300 W prototype can be achieved. The circuit input-to-output capacitance per watt is therefore 30 times lower than that of existing approaches. A mathematical model of the inter-winding capacitance of the proposed transformer, circuit analysis, and experimental results are provided to prove the feasibility of the converter.

KW - Current transformers

KW - Parasitic capacitance

KW - Switching converters

KW - Stacking

KW - Dc-dc power converters

U2 - 10.1109/TPEL.2014.2338834

DO - 10.1109/TPEL.2014.2338834

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